Annotation of doc/gutshtml/SessionTw2.html, revision 1.2
1.2 ! bowersj2 1: <html>
! 2:
! 3: <head>
! 4:
! 5: <meta name=Title content="Session Two: Statistics/Chart (Behrouz)">
! 6:
! 7: <meta http-equiv=Content-Type content="text/html; charset=macintosh">
! 8:
! 9: <link rel=Edit-Time-Data href="Session%20Tw2_files/editdata.mso">
! 10:
! 11: <link rel=OLE-Object-Data href="Session%20Tw2_files/oledata.mso">
! 12:
! 13: <title>Session Two: Statistics/Chart (Behrouz)</title>
! 14:
! 15: <style><!--
! 16:
! 17: .MsoFootnoteText
! 18:
! 19: {font-size:10.0pt;
! 20:
! 21: font-family:"Times New Roman";}
! 22:
! 23: .MsoHeader
! 24:
! 25: {tab-stops:center 3.0in right 6.0in;
! 26:
! 27: font-size:10.0pt;
! 28:
! 29: font-family:"Times New Roman";}
! 30:
! 31: .MsoFootnoteReference
! 32:
! 33: {vertical-align:super;}
! 34:
! 35: .MsoBodyText
! 36:
! 37: {line-height:24.0pt;
! 38:
! 39: font-size:12.0pt;
! 40:
! 41: font-family:"Times New Roman";
! 42:
! 43: layout-grid-mode:line;}
! 44:
! 45: .MsoBodyTextIndent
! 46:
! 47: {text-indent:-.5in;
! 48:
! 49: font-size:10.0pt;
! 50:
! 51: font-family:"Times New Roman";}
! 52:
! 53: .MsoBodyText2
! 54:
! 55: {font-size:10.0pt;
! 56:
! 57: font-family:"Times New Roman";
! 58:
! 59: color:black;}
! 60:
! 61: .MsoBodyTextIndent2
! 62:
! 63: {text-align:justify;
! 64:
! 65: line-height:150%;
! 66:
! 67: font-size:11.0pt;
! 68:
! 69: font-family:"Times New Roman";}
! 70:
! 71: .MsoHyperlink
! 72:
! 73: {color:blue;
! 74:
! 75: text-decoration:underline;
! 76:
! 77: text-underline:single;}
! 78:
! 79: .H5
! 80:
! 81: {font-size:10.0pt;
! 82:
! 83: font-family:"Times New Roman";
! 84:
! 85: layout-grid-mode:line;
! 86:
! 87: font-weight:bold;}
! 88:
! 89: .FirstParagraph
! 90:
! 91: {text-align:justify;
! 92:
! 93: font-size:10.0pt;
! 94:
! 95: font-family:"Times New Roman";}
! 96:
! 97: .Section1
! 98:
! 99: {page:Section1;}
! 100:
! 101: .Section2
! 102:
! 103: {page:Section2;}
! 104:
! 105: -->
! 106:
! 107: </style>
! 108:
! 109: </head>
! 110:
! 111: <body bgcolor=#FFFFFF link=blue vlink=purple class="Normal" lang=EN-US><div class=Section1>
! 112:
! 113: <h2>Session Two: Statistics/Chart (Behrouz)</h2>
! 114:
! 115: <p><span style='layout-grid-mode:line'>In LON-CAPA, we are involved with two kinds
! 116:
! 117: of large data sets: </span></p>
! 118:
! 119: <p> <span style='layout-grid-mode:line'>1)<span
! 120:
! 121: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 122:
! 123: style='layout-grid-mode:line'>Educational resources such as </span>web pages,
! 124:
! 125: demonstrations, simulations, and individualized problems designed for use on
! 126:
! 127: homework assignments, quizzes, and examinations<span style='layout-grid-mode:
! 128:
! 129: line'>; </span></p>
! 130:
! 131: <p> <span style='layout-grid-mode:line'>2)<span
! 132:
! 133: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 134:
! 135: style='layout-grid-mode:line'>Information about users who create, modify, assess,
! 136:
! 137: or use these resources. </span></p>
! 138:
! 139: <p><span style='layout-grid-mode:line'>Usually, instructors/ course coordinators
! 140:
! 141: wish to assess the studentsÕ educational situation or evaluate the problems
! 142:
! 143: have bee presented in the course, after the students used the educational materials.
! 144:
! 145: There are two main modules in LON_CAPA that provide the statistical information
! 146:
! 147: for instructors/ course-coordinators: <i>lonchart.pm </i></span><span style='layout-grid-mode:line'>and
! 148:
! 149: <i>lonstatistics.pm</i></span><span
! 150:
! 151: style='layout-grid-mode:line'>. When an instructorÕs access is authorized, he/she
! 152:
! 153: can find useful reports about the course, regarding maps, problems included
! 154:
! 155: in each map, and the students who tried to solve the problems. When an instructor
! 156:
! 157: selects a course, he/she has two buttons in remote control to obtain the statistical
! 158:
! 159: information: Ò<i>chart</i></span><span style='layout-grid-mode:
! 160:
! 161: line'>Ó or Ò<i>stat</i></span><span style='layout-grid-mode:line'>Ó button.</span></p>
! 162:
! 163: <h3 style='line-height:150%'><a name="_Toc421867139"><span style='layout-grid-mode:
! 164:
! 165: line'>lonchart.pm</span></a></h3>
! 166:
! 167: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Ò<i>chart</i></span><span
! 168:
! 169: style='font-size:11.0pt;layout-grid-mode:line'>Ó button in remote control calls
! 170:
! 171: lonchart.pm, which provides a quick review of students tries on different problems
! 172:
! 173: of a course for an instructor. The instructor may monitor the number of
! 174:
! 175: tries of every student in each map and its problems.<span style='color:red'>
! 176:
! 177: </span>The number of solved problems in a map is shown in the end of each map
! 178:
! 179: with a different color (green). The overall solved problems and total number
! 180:
! 181: of problems in the map can be seen at the end of line according to every individual
! 182:
! 183: student in a different color (blue). A sample of chart is shown in <b>Fig. 3.2.1</b></span></p>
! 184:
! 185: <p><span style='font-size:9.0pt;border:solid windowtext .5pt;
! 186:
! 187: padding:0in'>xxxxxxx1:msu ! 001 ! 1*11*121 <span style='color:green'>8</span>
! 188:
! 189: 1231.31423212 <span style='color:green'>12 </span> 2111211284.131 <span style='color:green'>13</span>
! 190:
! 191: É 231113112221 <span style='color:green'>12</span> <span style='color:navy'>162
! 192:
! 193: / 188<br>
! 194:
! 195: </span>xxxxxxx2:msu ! 003 ! 12113162 <span style='color:green'>8</span> 1+11
! 196:
! 197: 1 21x111<span style='color:green'>10</span> 11211322246132 <span
! 198:
! 199: style='color:green'>14</span> É ############<span style='color:green'> 0
! 200:
! 201: </span><span
! 202:
! 203: style='color:navy'>149 / 188</span><span style='color:green'> <br>
! 204:
! 205: <br>
! 206:
! 207: </span></span></p>
! 208:
! 209: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 1.0pt'>
! 210:
! 211: <p style='border:none;padding:0in;'>1..9: correct by student in 1..9 tries </p>
! 212:
! 213: <p style='border:none;padding:0in;'>*: correct by student in more than 9 tries
! 214:
! 215: </p>
! 216:
! 217: <p style='border:none;padding:0in;'>+: correct by override </p>
! 218:
! 219: <p style='border:none;padding:0in;'>-: incorrect by override </p>
! 220:
! 221: <p style='border:none;padding:0in;'>.: incorrect attempted </p>
! 222:
! 223: <p style='border:none;padding:0in;'>#: ungraded attempted </p>
! 224:
! 225: <p style='border:none;padding:0in;'>Ô Ô: not attempted </p>
! 226:
! 227: <p style='border:none;padding:0in;'>x: excused</p>
! 228:
! 229: </div>
! 230:
! 231: <p><span style='font-size:14.0pt'><b>Fig. 3.2.1</b></span><span
! 232:
! 233: style='font-size:14.0pt'> Chart of map, problems, and studentsÕ tries, and a quick
! 234:
! 235: statistics of solved problems</span></p>
! 236:
! 237: <p><span style='layout-grid-mode:line'>1. When an instructor loads the chart in
! 238:
! 239: his/her machine once, its data is cached in his/her local machine. If he/she
! 240:
! 241: runs the chart again, the course chart is loaded very quickly from the cache.</span></p>
! 242:
! 243: <p><span style='layout-grid-mode:line'>2. An instructor can sort the chart according
! 244:
! 245: to user name, last name, as well as, the section which student belongs to.</span></p>
! 246:
! 247: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'>
! 248:
! 249: <p align=center style='text-align:center;
! 250:
! 251: border:none;padding:0in;'><span style='font-size:8.0pt;font-family:Arial;
! 252:
! 253: display:none'>Top of Form</span></p>
! 254:
! 255: </div>
! 256:
! 257: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 0in 4.0pt'>
! 258:
! 259: <p align=center style='
! 260:
! 261: text-align:center;
! 262:
! 263: border:none;padding:
! 264:
! 265: 0in;'><b>Sort by: </b><span
! 266:
! 267: style='font-weight:normal'> <img width=53 height=23
! 268:
! 269: src="Session%20Tw2_files/image003.png" v:shapes="_x0000_i1025">
! 270:
! 271: <img width=51 height=23
! 272:
! 273: src="Session%20Tw2_files/image006.png" v:shapes="_x0000_i1026">
! 274:
! 275: <img width=40 height=23
! 276:
! 277: src="Session%20Tw2_files/image009.png" v:shapes="_x0000_i1027"> <br>
! 278:
! 279: <br>
! 280:
! 281: </span></p>
! 282:
! 283: </div>
! 284:
! 285: <p>3. The instructor is able to select the ÒexpiredÓ students (who dropped the
! 286:
! 287: course earlier) or ÒactiveÓ students or ÒanyÓ (all the) students.</p>
! 288:
! 289: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 0in'>
! 290:
! 291: <p align=center style='
! 292:
! 293: text-align:center;
! 294:
! 295: border:none;padding:0in;
! 296:
! 297: '><br>
! 298:
! 299: <b>Student Status: </b><span style='font-weight:normal'> <img width=66 height=18
! 300:
! 301: src="Session%20Tw2_files/image012.png" v:shapes="_x0000_i1028">
! 302:
! 303: <img width=77 height=23
! 304:
! 305: src="Session%20Tw2_files/image015.png" v:shapes="_x0000_i1029"> </span></p>
! 306:
! 307: </div>
! 308:
! 309: <div style='border:none;border-top:solid windowtext .75pt;padding:1.0pt 0in 0in 0in'>
! 310:
! 311: <p align=center style='text-align:center;border:none;
! 312:
! 313: padding:0in;'><span
! 314:
! 315: style='font-size:8.0pt;font-family:Arial;display:none'>Bottom of Form</span></p>
! 316:
! 317: </div>
! 318:
! 319: <h3 style='line-height:200%'><a name="_Toc421867140"><span style='layout-grid-mode:
! 320:
! 321: line'>lonstatistics.pm</span></a></h3>
! 322:
! 323: <p><span style='layout-grid-mode:line'>In ÒstatÓ button of Òremote controlÓ, a
! 324:
! 325: menu with three options is provided for instructor: </span></p>
! 326:
! 327: <p> <span style='layout-grid-mode:line'>1)<span
! 328:
! 329: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 330:
! 331: style='layout-grid-mode:line'>Problem stats</span></p>
! 332:
! 333: <p> <span style='layout-grid-mode:line'>2)<span
! 334:
! 335: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 336:
! 337: style='layout-grid-mode:line'>Problem Analysis</span></p>
! 338:
! 339: <p> <span style='font-size:11.0pt;
! 340:
! 341: layout-grid-mode:line'>3)<span style='font:7.0pt "Times New Roman"'>
! 342:
! 343: </span></span> <span style='layout-grid-mode:line'>Student Assessment</span></p>
! 344:
! 345: <h4 style='line-height:150%'><span style='font-size:6.0pt;font-family:Arial;
! 346:
! 347: layout-grid-mode:line;font-weight:normal'> </span></h4>
! 348:
! 349: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line'>
! 350:
! 351: </span></h4>
! 352:
! 353: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line;
! 354:
! 355: font-weight:normal'>Problem Stats</span></h4>
! 356:
! 357: <p><span style='layout-grid-mode:line'>Ò<i>Problem Stats</i></span><span
! 358:
! 359: style='layout-grid-mode:line'>Ó button provides a table<a href="#_ftn1" name="_ftnref1" title=""><span class=MsoFootnoteReference>
! 360:
! 361: [1] </span></a> which includes statistical information about every problem,
! 362:
! 363: as you see in <b>Fig. 3.2.2</b></span><span style='layout-grid-mode:line'>.
! 364:
! 365: The function ExtractStudentData in lonstatitics Perl Module fetches all the
! 366:
! 367: data from a particular student<a name="_Hlt9981185"></a> .db file into a big
! 368:
! 369: hash in local machine. It uses dump function, which communicates via lonc/lond
! 370:
! 371: to get the student data from student repository (data server) and then all versions
! 372:
! 373: of student submissions computed according to every problem. The results are
! 374:
! 375: stored in an array in the memory. Before computing the studentsÕ tries
! 376:
! 377: in a particular problem, the different parts of problem are distinguished by
! 378:
! 379: considering the meta-data, which is provided for every problem. </span></p>
! 380:
! 381: <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/mmp\/kap1\/calckap1\.sequence\0022 \\t \0022_blank\0022"'><span
! 382:
! 383: class=MsoHyperlink><span style='color:blue'>Homework Set 1</span></span></span>
! 384:
! 385: </p>
! 386:
! 387: <table border=1 cellspacing=0 cellpadding=0>
! 388:
! 389: <tr>
! 390:
! 391: <td width=21 class="Normal"> <p align=center style='text-align:center'><b>P#</b></p></td>
! 392:
! 393: <td width=72 class="Normal"> <p align=center style='text-align:center'><b>
! 394:
! 395: <img width=94 height=23
! 396:
! 397: src="Session%20Tw2_files/image018.png" v:shapes="_x0000_i1030"> </b></p></td>
! 398:
! 399: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
! 400:
! 401: <img width=41 height=23
! 402:
! 403: src="Session%20Tw2_files/image021.png" v:shapes="_x0000_i1031"> </b></p></td>
! 404:
! 405: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
! 406:
! 407: <img width=31 height=23
! 408:
! 409: src="Session%20Tw2_files/image024.png" v:shapes="_x0000_i1032"> </b></p></td>
! 410:
! 411: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
! 412:
! 413: <img width=28 height=23
! 414:
! 415: src="Session%20Tw2_files/image027.png" v:shapes="_x0000_i1033"> </b></p></td>
! 416:
! 417: <td width=30 class="Normal"> <p align=center style='text-align:center'><b>
! 418:
! 419: <img width=32 height=23
! 420:
! 421: src="Session%20Tw2_files/image030.png" v:shapes="_x0000_i1034"> </b></p></td>
! 422:
! 423: <td width=31 class="Normal"> <p align=center style='text-align:center'><b>
! 424:
! 425: <img width=33 height=23
! 426:
! 427: src="Session%20Tw2_files/image033.png" v:shapes="_x0000_i1035"> </b></p></td>
! 428:
! 429: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
! 430:
! 431: <img width=31 height=23
! 432:
! 433: src="Session%20Tw2_files/image036.png" v:shapes="_x0000_i1036"> </b></p></td>
! 434:
! 435: <td width=36 class="Normal"> <p align=center style='text-align:center'><b>
! 436:
! 437: <img width=40 height=23
! 438:
! 439: src="Session%20Tw2_files/image039.png" v:shapes="_x0000_i1037"> </b></p></td>
! 440:
! 441: <td width=32 class="Normal"> <p align=center style='text-align:center'><b>
! 442:
! 443: <img width=35 height=23
! 444:
! 445: src="Session%20Tw2_files/image042.png" v:shapes="_x0000_i1038"> </b></p></td>
! 446:
! 447: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
! 448:
! 449: <img width=28 height=23
! 450:
! 451: src="Session%20Tw2_files/image045.png" v:shapes="_x0000_i1039"> </b></p></td>
! 452:
! 453: <td width=33 class="Normal"> <p align=center style='text-align:center'><b>
! 454:
! 455: <img width=36 height=23
! 456:
! 457: src="Session%20Tw2_files/image048.png" v:shapes="_x0000_i1040"> </b></p></td>
! 458:
! 459: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>
! 460:
! 461: <img width=38 height=23
! 462:
! 463: src="Session%20Tw2_files/image051.png" v:shapes="_x0000_i1041"> </b></p></td>
! 464:
! 465: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
! 466:
! 467: <img width=41 height=23
! 468:
! 469: src="Session%20Tw2_files/image054.png" v:shapes="_x0000_i1042"> </b></p></td>
! 470:
! 471: </tr>
! 472:
! 473: <tr>
! 474:
! 475: <td width=21 class="Normal"> <p>1</p></td>
! 476:
! 477: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob11\.problem\0022 \\t \0022_blank\0022"'><span
! 478:
! 479: class=MsoHyperlink><span style='color:blue'>Calculator Skills</span></span></span></span></p></td>
! 480:
! 481: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 482:
! 483: <td width=29 bgcolor="white" class="Normal"> <p>267</p></td>
! 484:
! 485: <td width=26 bgcolor="white" class="Normal"> <p>3</p></td>
! 486:
! 487: <td width=30 bgcolor="white" class="Normal"> <p>1.04</p></td>
! 488:
! 489: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
! 490:
! 491: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 492:
! 493: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
! 494:
! 495: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
! 496:
! 497: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
! 498:
! 499: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
! 500:
! 501: <td width=35 bgcolor="white" class="Normal"> <p>0.03</p></td>
! 502:
! 503: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
! 504:
! 505: </tr>
! 506:
! 507: <tr>
! 508:
! 509: <td width=21 class="Normal"> <p>2</p></td>
! 510:
! 511: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
! 512:
! 513: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span></span></p></td>
! 514:
! 515: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 516:
! 517: <td width=29 bgcolor="white" class="Normal"> <p>414</p></td>
! 518:
! 519: <td width=26 bgcolor="white" class="Normal"> <p>17</p></td>
! 520:
! 521: <td width=30 bgcolor="white" class="Normal"> <p>1.62</p></td>
! 522:
! 523: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
! 524:
! 525: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 526:
! 527: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
! 528:
! 529: <td width=32 bgcolor="white" class="Normal"> <p>0.38</p></td>
! 530:
! 531: <td width=26 bgcolor="white" class="Normal"> <p>1.6</p></td>
! 532:
! 533: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
! 534:
! 535: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
! 536:
! 537: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
! 538:
! 539: </tr>
! 540:
! 541: <tr>
! 542:
! 543: <td width=21 class="Normal"> <p>3</p></td>
! 544:
! 545: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob22\.problem\0022 \\t \0022_blank\0022"'><span
! 546:
! 547: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span></span></p></td>
! 548:
! 549: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 550:
! 551: <td width=29 bgcolor="white" class="Normal"> <p>698</p></td>
! 552:
! 553: <td width=26 bgcolor="white" class="Normal"> <p>13</p></td>
! 554:
! 555: <td width=30 bgcolor="white" class="Normal"> <p>2.73</p></td>
! 556:
! 557: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
! 558:
! 559: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 560:
! 561: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
! 562:
! 563: <td width=32 bgcolor="white" class="Normal"> <p>0.63</p></td>
! 564:
! 565: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
! 566:
! 567: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
! 568:
! 569: <td width=35 bgcolor="white" class="Normal"> <p>0.06</p></td>
! 570:
! 571: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
! 572:
! 573: </tr>
! 574:
! 575: <tr>
! 576:
! 577: <td width=21 class="Normal"> <p>4</p></td>
! 578:
! 579: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob13\.problem\0022 \\t \0022_blank\0022"'><span
! 580:
! 581: class=MsoHyperlink><span style='color:blue'>Perimeter</span></span></span></span></p></td>
! 582:
! 583: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 584:
! 585: <td width=29 bgcolor="white" class="Normal"> <p>388</p></td>
! 586:
! 587: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
! 588:
! 589: <td width=30 bgcolor="white" class="Normal"> <p>1.52</p></td>
! 590:
! 591: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
! 592:
! 593: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 594:
! 595: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
! 596:
! 597: <td width=32 bgcolor="white" class="Normal"> <p>0.34</p></td>
! 598:
! 599: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
! 600:
! 601: <td width=33 bgcolor="white" class="Normal"> <p>2.4</p></td>
! 602:
! 603: <td width=35 bgcolor="white" class="Normal"> <p>-0.00</p></td>
! 604:
! 605: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
! 606:
! 607: </tr>
! 608:
! 609: <tr>
! 610:
! 611: <td width=21 class="Normal"> <p>5</p></td>
! 612:
! 613: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/devolibrary\/type-math\/fraction-rlt-235\.problem\0022 \\t \0022_blank\0022"'><span
! 614:
! 615: class=MsoHyperlink><span style='color:blue'>Reduce a Fraction</span></span></span></span></p></td>
! 616:
! 617: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 618:
! 619: <td width=29 bgcolor="white" class="Normal"> <p>315</p></td>
! 620:
! 621: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
! 622:
! 623: <td width=30 bgcolor="white" class="Normal"> <p>1.23</p></td>
! 624:
! 625: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
! 626:
! 627: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 628:
! 629: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
! 630:
! 631: <td width=32 bgcolor="white" class="Normal"> <p>0.19</p></td>
! 632:
! 633: <td width=26 bgcolor="white" class="Normal"> <p>0.5</p></td>
! 634:
! 635: <td width=33 bgcolor="white" class="Normal"> <p>2.3</p></td>
! 636:
! 637: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
! 638:
! 639: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
! 640:
! 641: </tr>
! 642:
! 643: <tr>
! 644:
! 645: <td width=21 class="Normal"> <p>6</p></td>
! 646:
! 647: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/devolibrary\/type-math\/fract-add-sub-div-p11\.problem\0022 \\t \0022_blank\0022"'><span
! 648:
! 649: class=MsoHyperlink><span style='color:blue'>Calculating with Fractions</span></span></span></span></p></td>
! 650:
! 651: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 652:
! 653: <td width=29 bgcolor="white" class="Normal"> <p>393</p></td>
! 654:
! 655: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
! 656:
! 657: <td width=30 bgcolor="white" class="Normal"> <p>1.54</p></td>
! 658:
! 659: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
! 660:
! 661: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 662:
! 663: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
! 664:
! 665: <td width=32 bgcolor="white" class="Normal"> <p>0.35</p></td>
! 666:
! 667: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
! 668:
! 669: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
! 670:
! 671: <td width=35 bgcolor="white" class="Normal"> <p>0.15</p></td>
! 672:
! 673: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
! 674:
! 675: </tr>
! 676:
! 677: <tr>
! 678:
! 679: <td width=21 class="Normal"> <p>7</p></td>
! 680:
! 681: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob04\.problem\0022 \\t \0022_blank\0022"'><span
! 682:
! 683: class=MsoHyperlink><span style='color:blue'>Area of a Balloon</span></span></span></span></p></td>
! 684:
! 685: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
! 686:
! 687: <td width=29 bgcolor="white" class="Normal"> <p>601</p></td>
! 688:
! 689: <td width=26 bgcolor="white" class="Normal"> <p>12</p></td>
! 690:
! 691: <td width=30 bgcolor="white" class="Normal"> <p>2.37</p></td>
! 692:
! 693: <td width=31 bgcolor="white" class="Normal"> <p>247</p></td>
! 694:
! 695: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 696:
! 697: <td width=36 bgcolor="white" class="Normal"> <p>2.8</p></td>
! 698:
! 699: <td width=32 bgcolor="white" class="Normal"> <p>0.59</p></td>
! 700:
! 701: <td width=26 bgcolor="white" class="Normal"> <p>1.8</p></td>
! 702:
! 703: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
! 704:
! 705: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
! 706:
! 707: <td width=37 bgcolor="white" class="Normal"> <p>-0.02</p></td>
! 708:
! 709: </tr>
! 710:
! 711: <tr>
! 712:
! 713: <td width=21 class="Normal"> <p>8</p></td>
! 714:
! 715: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
! 716:
! 717: class=MsoHyperlink><span style='color:blue'>Volume of a Balloon</span></span></span></span></p></td>
! 718:
! 719: <td width=37 bgcolor="white" class="Normal"> <p>252</p></td>
! 720:
! 721: <td width=29 bgcolor="white" class="Normal"> <p>565</p></td>
! 722:
! 723: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
! 724:
! 725: <td width=30 bgcolor="white" class="Normal"> <p>2.24</p></td>
! 726:
! 727: <td width=31 bgcolor="white" class="Normal"> <p>243</p></td>
! 728:
! 729: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 730:
! 731: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
! 732:
! 733: <td width=32 bgcolor="white" class="Normal"> <p>0.57</p></td>
! 734:
! 735: <td width=26 bgcolor="white" class="Normal"> <p>1.9</p></td>
! 736:
! 737: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
! 738:
! 739: <td width=35 bgcolor="white" class="Normal"> <p>-0.06</p></td>
! 740:
! 741: <td width=37 bgcolor="white" class="Normal"> <p>-0.03</p></td>
! 742:
! 743: </tr>
! 744:
! 745: <tr>
! 746:
! 747: <td width=21 class="Normal"> <p>9</p></td>
! 748:
! 749: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob12\.problem\0022 \\t \0022_blank\0022"'><span
! 750:
! 751: class=MsoHyperlink><span style='color:blue'>Numerical Value of Fraction</span></span></span></span></p></td>
! 752:
! 753: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 754:
! 755: <td width=29 bgcolor="white" class="Normal"> <p>268</p></td>
! 756:
! 757: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
! 758:
! 759: <td width=30 bgcolor="white" class="Normal"> <p>1.05</p></td>
! 760:
! 761: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
! 762:
! 763: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 764:
! 765: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
! 766:
! 767: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
! 768:
! 769: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
! 770:
! 771: <td width=33 bgcolor="white" class="Normal"> <p>3.4</p></td>
! 772:
! 773: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
! 774:
! 775: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
! 776:
! 777: </tr>
! 778:
! 779: <tr>
! 780:
! 781: <td width=21 class="Normal"> <p>10</p></td>
! 782:
! 783: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob17\.problem\0022 \\t \0022_blank\0022"'><span
! 784:
! 785: class=MsoHyperlink><span style='color:blue'>Units</span></span></span></span></p></td>
! 786:
! 787: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
! 788:
! 789: <td width=29 bgcolor="white" class="Normal"> <p>1116</p></td>
! 790:
! 791: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
! 792:
! 793: <td width=30 bgcolor="white" class="Normal"> <p>4.36</p></td>
! 794:
! 795: <td width=31 bgcolor="white" class="Normal"> <p>246</p></td>
! 796:
! 797: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 798:
! 799: <td width=36 bgcolor="white" class="Normal"> <p>3.9</p></td>
! 800:
! 801: <td width=32 bgcolor="white" class="Normal"> <p>0.78</p></td>
! 802:
! 803: <td width=26 bgcolor="white" class="Normal"> <p>4.2</p></td>
! 804:
! 805: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
! 806:
! 807: <td width=35 bgcolor="white" class="Normal"> <p>0.18</p></td>
! 808:
! 809: <td width=37 bgcolor="white" class="Normal"> <p>0.03</p></td>
! 810:
! 811: </tr>
! 812:
! 813: <tr>
! 814:
! 815: <td width=21 class="Normal"> <p>11</p></td>
! 816:
! 817: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
! 818:
! 819: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span></span></p></td>
! 820:
! 821: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
! 822:
! 823: <td width=29 bgcolor="white" class="Normal"> <p>749</p></td>
! 824:
! 825: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
! 826:
! 827: <td width=30 bgcolor="white" class="Normal"> <p>2.95</p></td>
! 828:
! 829: <td width=31 bgcolor="white" class="Normal"> <p>251</p></td>
! 830:
! 831: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 832:
! 833: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
! 834:
! 835: <td width=32 bgcolor="white" class="Normal"> <p>0.66</p></td>
! 836:
! 837: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
! 838:
! 839: <td width=33 bgcolor="white" class="Normal"> <p>1.1</p></td>
! 840:
! 841: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
! 842:
! 843: <td width=37 bgcolor="white" class="Normal"> <p>-0.05</p></td>
! 844:
! 845: </tr>
! 846:
! 847: <tr>
! 848:
! 849: <td width=21 class="Normal"> <p>12</p></td>
! 850:
! 851: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
! 852:
! 853: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span></span></p></td>
! 854:
! 855: <td width=37 bgcolor="white" class="Normal"> <p>253</p></td>
! 856:
! 857: <td width=29 bgcolor="white" class="Normal"> <p>1026</p></td>
! 858:
! 859: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
! 860:
! 861: <td width=30 bgcolor="white" class="Normal"> <p>4.06</p></td>
! 862:
! 863: <td width=31 bgcolor="white" class="Normal"> <p>250</p></td>
! 864:
! 865: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
! 866:
! 867: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
! 868:
! 869: <td width=32 bgcolor="white" class="Normal"> <p>0.76</p></td>
! 870:
! 871: <td width=26 bgcolor="white" class="Normal"> <p>3.6</p></td>
! 872:
! 873: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
! 874:
! 875: <td width=35 bgcolor="white" class="Normal"> <p>0.14</p></td>
! 876:
! 877: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
! 878:
! 879: </tr>
! 880:
! 881: <tr>
! 882:
! 883: <td width=21 class="Normal"> <p>13</p></td>
! 884:
! 885: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/02_Math_2_Trig\/msu-prob13\.problem\0022 \\t \0022_blank\0022"'><span
! 886:
! 887: class=MsoHyperlink><span style='color:blue'>Proximity</span></span></span></span></p></td>
! 888:
! 889: <td width=37 bgcolor="white" class="Normal"> <p>249</p></td>
! 890:
! 891: <td width=29 bgcolor="white" class="Normal"> <p>663</p></td>
! 892:
! 893: <td width=26 bgcolor="white" class="Normal"> <p>19</p></td>
! 894:
! 895: <td width=30 bgcolor="white" class="Normal"> <p>2.66</p></td>
! 896:
! 897: <td width=31 bgcolor="white" class="Normal"> <p>239</p></td>
! 898:
! 899: <td width=29 bgcolor="white" class="Normal"> <p>1</p></td>
! 900:
! 901: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
! 902:
! 903: <td width=32 bgcolor="white" class="Normal"> <p>0.64</p></td>
! 904:
! 905: <td width=26 bgcolor="white" class="Normal"> <p>2.3</p></td>
! 906:
! 907: <td width=33 bgcolor="white" class="Normal"> <p>2.8</p></td>
! 908:
! 909: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
! 910:
! 911: <td width=37 bgcolor="white" class="Normal"> <p>-0.10</p></td>
! 912:
! 913: </tr>
! 914:
! 915: </table>
! 916:
! 917: <p><span style='font-size:14.0pt'><b>Fig. 3.2.2</b></span><span
! 918:
! 919: style='font-size:14.0pt'>: Statistics table includes general statistics of every
! 920:
! 921: problem of the course</span></p>
! 922:
! 923: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Every part of <i>multi-part</i></span><span style='font-size:11.0pt;layout-grid-mode:
! 924:
! 925: line'> problems is distinguished as a separate problem. The <i>multi-instance</i></span><span
! 926:
! 927: style='font-size:11.0pt;layout-grid-mode:line'> problem is also considered separately,
! 928:
! 929: because a particular problem or one part of it might be used in different maps.
! 930:
! 931: Finally, the array, which includes all computed information from all students,
! 932:
! 933: sorted according to the problem order, underlying in homework sets order. Therefore,
! 934:
! 935: in this step we can compute the following statistical information:</span></p>
! 936:
! 937: <p> <span style='font-size:11.0pt;
! 938:
! 939: layout-grid-mode:line'>1.<span style='font:7.0pt "Times New Roman"'>
! 940:
! 941: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>#Stdnts</b></span><span
! 942:
! 943: style='font-size:11.0pt;layout-grid-mode:line'>: Total
! 944:
! 945: number of students who take a look at the problem.(Let #Stdnts is equal to <i>n</i></span><span style='font-size:
! 946:
! 947: 11.0pt;layout-grid-mode:line'>)</span></p>
! 948:
! 949: <p> <span style='font-size:11.0pt;
! 950:
! 951: layout-grid-mode:line'>2.<span style='font:7.0pt "Times New Roman"'>
! 952:
! 953: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Tries:</b></span><span
! 954:
! 955: style='font-size:11.0pt;layout-grid-mode:line'>
! 956:
! 957: Total number of tries to solve the problem (</span><span style='font-size:11.0pt'>
! 958:
! 959: <img width=28 height=34
! 960:
! 961: src="Session%20Tw2_files/image057.png" v:shapes="_x0000_i1043"> where <i><sub>
! 962:
! 963: <img width=12 height=18
! 964:
! 965: src="Session%20Tw2_files/image060.png" v:shapes="_x0000_i1044"> </sub></i></span><span style='font-size:11.0pt'>denote
! 966:
! 967: a student try<span style='layout-grid-mode:line'>).</span></span></p>
! 968:
! 969: <p> <span style='font-size:11.0pt;
! 970:
! 971: layout-grid-mode:line'>3.<span style='font:7.0pt "Times New Roman"'>
! 972:
! 973: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Mod:
! 974:
! 975: </b></span><span style='font-size:11.0pt;layout-grid-mode:line'>
! 976:
! 977: Mode, </span><span style='font-size:11.0pt'>Maximum Number of Tries for solving
! 978:
! 979: the problem.</span></p>
! 980:
! 981: <p> <span style='font-size:11.0pt;
! 982:
! 983: layout-grid-mode:line'>4.<span style='font:7.0pt "Times New Roman"'>
! 984:
! 985: </span></span> <span style='font-size:11.0pt'><b>Mean:</b></span><span
! 986:
! 987: style='font-size:11.0pt'> Average Number
! 988:
! 989: of the Tries. </span></p>
! 990:
! 991: <p><span style='font-size:11.0pt'> <img width=11 height=13
! 992:
! 993: src="Session%20Tw2_files/image063.png" v:shapes="_x0000_i1045"> = <img width=38 height=34
! 994:
! 995: src="Session%20Tw2_files/image066.png" v:shapes="_x0000_i1046"> </span></p>
! 996:
! 997: <p> 5.<span style='font:7.0pt "Times New Roman"'> </span>
! 998:
! 999: <span style='font-size:11.0pt;layout-grid-mode:line'><b>#YES:</b></span><span
! 1000:
! 1001: style='font-size:11.0pt'> Number of students
! 1002:
! 1003: solved the problem correctly.</span></p>
! 1004:
! 1005: <p> <span style='font-size:11.0pt'>6.<span
! 1006:
! 1007: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1008:
! 1009: style='font-size:11.0pt'><b>#yes:</b></span><span style='font-size:11.0pt'>
! 1010:
! 1011: Number of students solved the problem by override. </span></p>
! 1012:
! 1013: <p><span style='font-size:11.0pt'>Sometimes, a student gets a correct answer after
! 1014:
! 1015: talking with the instructor. This type of correct answer is called Òcorrected
! 1016:
! 1017: by override.</span></p>
! 1018:
! 1019: <p> <span style='font-size:11.0pt'>7.<span
! 1020:
! 1021: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1022:
! 1023: style='font-size:11.0pt'><b>%Wrng:</b></span><span style='font-size:11.0pt'>
! 1024:
! 1025: Percentage of students tried to solve the problem but still incorrect. </span></p>
! 1026:
! 1027: <p><span style='font-size:11.0pt'> <img width=137 height=31
! 1028:
! 1029: src="Session%20Tw2_files/image069.png" v:shapes="_x0000_i1047"> </span></p>
! 1030:
! 1031: <p> <span style='font-size:11.0pt'>8.<span
! 1032:
! 1033: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1034:
! 1035: style='font-size:11.0pt'><b>S.D.:</b></span><span style='font-size:11.0pt'>
! 1036:
! 1037: <i>Standard Deviation</i></span><span style='font-size:11.0pt'> of the studentsÕ
! 1038:
! 1039: tries. </span></p>
! 1040:
! 1041: <p><span style='font-size:11.0pt'> <img width=98 height=40
! 1042:
! 1043: src="Session%20Tw2_files/image072.png" v:shapes="_x0000_i1048"> </span></p>
! 1044:
! 1045: <p> <span style='font-size:11.0pt'>9.<span
! 1046:
! 1047: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1048:
! 1049: style='font-size:11.0pt'><b>Skew.:</b></span><span style='font-size:11.0pt'>
! 1050:
! 1051: <i>Skewness</i></span><span
! 1052:
! 1053: style='font-size:11.0pt'> of the studentsÕ tries. </span></p>
! 1054:
! 1055: <p><span style='font-size:11.0pt'> <img width=194 height=76
! 1056:
! 1057: src="Session%20Tw2_files/image075.png" v:shapes="_x0000_i1049"> </span></p>
! 1058:
! 1059: <p> <span style='font-size:11.0pt'>10.<span
! 1060:
! 1061: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1062:
! 1063: style='font-size:11.0pt'><b>DoDiff:</b></span><span style='font-size:11.0pt'>
! 1064:
! 1065: <i>Degree of Difficulty</i></span><span
! 1066:
! 1067: style='font-size:11.0pt'> of the problem. </span></p>
! 1068:
! 1069: <p><span style='font-size:11.0pt'> <img width=100 height=38
! 1070:
! 1071: src="Session%20Tw2_files/image078.png" v:shapes="_x0000_i1050"> </span></p>
! 1072:
! 1073: <p><span style='font-size:11.0pt'>As you see Degree of Difficulty is always between
! 1074:
! 1075: 0 and 1. This is a good factor for an instructor to determine whether a problem
! 1076:
! 1077: is difficult, and what is the degree of this difficulty. Thus, DoDiff of each
! 1078:
! 1079: problem is saved in its meta data.</span></p>
! 1080:
! 1081: <p> <span style='font-size:11.0pt'>11.<span
! 1082:
! 1083: style='font:7.0pt "Times New Roman"'> </span></span> <span
! 1084:
! 1085: style='font-size:11.0pt'><b>Dis.F.:</b></span><span style='font-size:11.0pt'>
! 1086:
! 1087: <i>Discrimination Factor</i></span><a href="#_ftn2" name="_ftnref2"
! 1088:
! 1089: title=""><span class=MsoFootnoteReference><span style='font-size:11.0pt'> [2]
! 1090:
! 1091: </span></span></a><span
! 1092:
! 1093: style='font-size:11.0pt'> is an standard for evaluating how much a problem discriminates
! 1094:
! 1095: between the upper and the lower students. First, all of the students are
! 1096:
! 1097: sorted according to a criterion. Then, %27 of upper students and %27 lower students
! 1098:
! 1099: are selected from the sorted students applying the mentioned criterion. Finally
! 1100:
! 1101: we obtain the Discrimination Factor from the following difference:</span></p>
! 1102:
! 1103: <p><span style='font-size:11.0pt'><i>Applied a criterion in %27 upper students
! 1104:
! 1105: - Applied the same Criterion in %27 lower students.</i></span></p>
! 1106:
! 1107: <p class=MsoBodyTextIndent2 align=left style='text-align:left;line-height:normal'>Discrimination
! 1108:
! 1109: Factor is a number in interval [-1,1]. If this number is close to 1, it shows
! 1110:
! 1111: that only upper students have solved this problem. If it is close to 0 it shows
! 1112:
! 1113: that the upper students and the lowers are approximately the same in solving
! 1114:
! 1115: the problem. If this number is negative, it shows that the lower students have
! 1116:
! 1117: more successes in solving the problem, and thus this problem is very poor in
! 1118:
! 1119: discriminating the upper and lower students.</p>
! 1120:
! 1121: <p><span style='font-size:11.0pt'>In lonstatistics.pm we compute the Discrimination
! 1122:
! 1123: Factor from two criteria:</span></p>
! 1124:
! 1125: <p><span style='font-size:11.0pt'><i>1st Criterion </i></span><span style='font-size:11.0pt'>for
! 1126:
! 1127: Sorting the Students: <img width=138 height=41
! 1128:
! 1129: src="Session%20Tw2_files/image081.png" v:shapes="_x0000_i1051"> </span></p>
! 1130:
! 1131: <p><span style='font-size:11.0pt'><i>2nd Criterion</i></span><span style='font-size:11.0pt'>
! 1132:
! 1133: for Sorting the Students: <img width=87 height=41
! 1134:
! 1135: src="Session%20Tw2_files/image084.png" v:shapes="_x0000_i1052"> </span></p>
! 1136:
! 1137: <p> <span style='font-size:11.0pt;
! 1138:
! 1139: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
! 1140:
! 1141: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Change
! 1142:
! 1143: the stats table sorting </b></span></p>
! 1144:
! 1145: <p><span style='font-size:11.0pt;layout-grid-mode:line'>As you see in Fig. 3.2.
! 1146:
! 1147: 2, all headers in the stats table are buttons that change the order of the table.
! 1148:
! 1149: Users can change increasingly or decreasingly every column of the table. First
! 1150:
! 1151: the user select the Ò<i>ascending</i></span><span
! 1152:
! 1153: style='font-size:11.0pt;layout-grid-mode:line'>Ó or Ò<i>descending</i></span><span
! 1154:
! 1155: style='font-size:11.0pt;layout-grid-mode:line'>Ó option, then he/she can change
! 1156:
! 1157: the order of the table with clicking the header of his/her interested header.
! 1158:
! 1159: If the user changes the order the table, all information is shown in one table,
! 1160:
! 1161: each row corresponds to a particular problem. If the user selects the first
! 1162:
! 1163: column, Òhomework set orderÓ, the information is shown in different tables,
! 1164:
! 1165: each table corresponds to a particular homework set. </span></p>
! 1166:
! 1167: <p> <span style='font-size:11.0pt;
! 1168:
! 1169: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
! 1170:
! 1171: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Graphical
! 1172:
! 1173: chart </b></span></p>
! 1174:
! 1175: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Two important features
! 1176:
! 1177: in this page might be seen through the graphical charts. That is, a user could
! 1178:
! 1179: see the content of Ò%wrongÓ column and Òdegree of difficulty of problemsÓ in
! 1180:
! 1181: the graphical chart as is shown in Fig. 3.2. 3 and 4 for homework set 1 in course
! 1182:
! 1183: PHY183 SS02. These graphical charts are produced dynamically by calling a CGI
! 1184:
! 1185: scripts, (graph.gif) which is located in /home/httpd/cgi-bin/</span></p>
! 1186:
! 1187: <p> <img width=231 height=173
! 1188:
! 1189: src="Session%20Tw2_files/image086.jpg" v:shapes="_x0000_i1053"> <span
! 1190:
! 1191: style='layout-grid-mode:line'> <img width=230 height=170
! 1192:
! 1193: src="Session%20Tw2_files/image088.jpg" v:shapes="_x0000_i1054"> </span></p>
! 1194:
! 1195: <p><b>Fig. 3.2. 3</b><span
! 1196:
! 1197: style='font-weight:normal'>: Degree of difficulty graph
! 1198:
! 1199: </span><b>Fig. 3.2. 4</b><span style='font-weight:normal'>: %Wrong graph</span></p>
! 1200:
! 1201: <h4 style='line-height:150%'><span style='font-size:12.0pt;font-family:Arial;
! 1202:
! 1203: layout-grid-mode:line'> </span></h4>
! 1204:
! 1205: <h3><a name="_Toc421867141"><span style='layout-grid-mode:line'>Problem Analysis</span></a></h3>
! 1206:
! 1207: <p><span style='font-size:11.0pt'>Conceptual option response problems, in which
! 1208:
! 1209: the students are given several concepts that are randomly assigned to each student,
! 1210:
! 1211: are more difficult than numerical simple problems. Instructors usually
! 1212:
! 1213: want to see the studentsÕ tries according to every particular concept separately.
! 1214:
! 1215: ÒProblem AnalysisÓ button provides all response option problems in one table
! 1216:
! 1217: as follows in the <b>Fig. 3.2.5.</b></span><span style='font-size:11.0pt'> </span></p>
! 1218:
! 1219: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
! 1220:
! 1221: <p style='border:none;padding:0in;'><span style='font-size:11.0pt'>Total number
! 1222:
! 1223: of students: 263</span></p>
! 1224:
! 1225: <p style='border:none;padding:0in;'><b>Select number of intervals</b><span style='font-weight:normal'>
! 1226:
! 1227: <img width=53 height=18
! 1228:
! 1229: src="Session%20Tw2_files/image091.png" v:shapes="_x0000_i1055"> </span></p>
! 1230:
! 1231: <p style='border:none;padding:0in;'><b>Option Response Problems</b><span
! 1232:
! 1233: style='font-weight:normal'> </span><b>in course PHY183 SS02:</b></p>
! 1234:
! 1235: </div>
! 1236:
! 1237: <table border=1 cellspacing=0 cellpadding=0>
! 1238:
! 1239: <tr>
! 1240:
! 1241: <td width=15 class="Normal"> <p align=center style='text-align:center'><b>#
! 1242:
! 1243: </b></p></td>
! 1244:
! 1245: <td width=83 class="Normal"> <p align=center style='text-align:center'><b>Problem
! 1246:
! 1247: Title </b></p></td>
! 1248:
! 1249: <td width=298 class="Normal"> <p align=center style='text-align:center'><b>Resource
! 1250:
! 1251: </b></p></td>
! 1252:
! 1253: <td width=77 class="Normal"> <p align=center style='text-align:center'><b>Address
! 1254:
! 1255: </b></p></td>
! 1256:
! 1257: </tr>
! 1258:
! 1259: <tr>
! 1260:
! 1261: <td width=15 class="Normal"> <p>1 </p></td>
! 1262:
! 1263: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
! 1264:
! 1265: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span> </p></td>
! 1266:
! 1267: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/01_Math_1/msu-prob10.problem
! 1268:
! 1269: </p></td>
! 1270:
! 1271: <td width=77 class="Normal"> <p> <img width=72 height=23
! 1272:
! 1273: src="Session%20Tw2_files/image094.png" v:shapes="_x0000_i1056"> </p></td>
! 1274:
! 1275: </tr>
! 1276:
! 1277: <tr>
! 1278:
! 1279: <td width=15 class="Normal"> <p>2 </p></td>
! 1280:
! 1281: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob22\.problem\0022 \\t \0022_blank\0022"'><span
! 1282:
! 1283: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span> </p></td>
! 1284:
! 1285: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob22.problem
! 1286:
! 1287: </p></td>
! 1288:
! 1289: <td width=77 class="Normal"> <p> <img width=72 height=23
! 1290:
! 1291: src="Session%20Tw2_files/image097.png" v:shapes="_x0000_i1057"> </p></td>
! 1292:
! 1293: </tr>
! 1294:
! 1295: <tr>
! 1296:
! 1297: <td width=15 class="Normal"> <p>3 </p></td>
! 1298:
! 1299: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob17\.problem\0022 \\t \0022_blank\0022"'><span
! 1300:
! 1301: class=MsoHyperlink><span style='color:blue'>Units</span></span></span> </p></td>
! 1302:
! 1303: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob17.problem
! 1304:
! 1305: </p></td>
! 1306:
! 1307: <td width=77 class="Normal"> <p> <img width=72 height=23
! 1308:
! 1309: src="Session%20Tw2_files/image100.png" v:shapes="_x0000_i1058"> </p></td>
! 1310:
! 1311: </tr>
! 1312:
! 1313: <tr>
! 1314:
! 1315: <td width=15 class="Normal"> <p>4 </p></td>
! 1316:
! 1317: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
! 1318:
! 1319: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span>
! 1320:
! 1321: </p></td>
! 1322:
! 1323: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob07.problem
! 1324:
! 1325: </p></td>
! 1326:
! 1327: <td width=77 class="Normal"> <p> <img width=72 height=23
! 1328:
! 1329: src="Session%20Tw2_files/image103.png" v:shapes="_x0000_i1059"> </p></td>
! 1330:
! 1331: </tr>
! 1332:
! 1333: <tr>
! 1334:
! 1335: <td width=15 class="Normal"> <p>5 </p></td>
! 1336:
! 1337: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
! 1338:
! 1339: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span>
! 1340:
! 1341: </p></td>
! 1342:
! 1343: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob10.problem
! 1344:
! 1345: </p></td>
! 1346:
! 1347: <td width=77 class="Normal"> <p> <img width=72 height=23
! 1348:
! 1349: src="Session%20Tw2_files/image106.png" v:shapes="_x0000_i1060"> </p></td>
! 1350:
! 1351: </tr>
! 1352:
! 1353: <tr>
! 1354:
! 1355: <td width=15 class="Normal"> <p>6 </p></td>
! 1356:
! 1357: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/05_1D_Motion\/msu-prob16\.problem\0022 \\t \0022_blank\0022"'><span
! 1358:
! 1359: class=MsoHyperlink><span style='color:blue'>Traveling Car</span></span></span>
! 1360:
! 1361: </p></td>
! 1362:
! 1363: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/05_1D_Motion/msu-prob16.problem
! 1364:
! 1365: </p></td>
! 1366:
! 1367: <td width=77 class="Normal"> <p> <img width=59 height=23
! 1368:
! 1369: src="Session%20Tw2_files/image109.png" v:shapes="_x0000_i1061"> </p></td>
! 1370:
! 1371: </tr>
! 1372:
! 1373: <tr>
! 1374:
! 1375: <td width=15 class="Normal"> <p>7 </p></td>
! 1376:
! 1377: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/kashy\/Testing\/randomlabel\/atwood3T2M\.problem\0022 \\t \0022_blank\0022"'><span
! 1378:
! 1379: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
! 1380:
! 1381: </p></td>
! 1382:
! 1383: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem
! 1384:
! 1385: </p></td>
! 1386:
! 1387: <td width=77 class="Normal"> <p> <img width=63 height=23
! 1388:
! 1389: src="Session%20Tw2_files/image112.png" v:shapes="_x0000_i1062"> </p></td>
! 1390:
! 1391: </tr>
! 1392:
! 1393: <tr>
! 1394:
! 1395: <td width=15 class="Normal"> <p>8 </p></td>
! 1396:
! 1397: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/10_Motion_W_Friction\/msu-prob32\.problem\0022 \\t \0022_blank\0022"'><span
! 1398:
! 1399: class=MsoHyperlink><span style='color:blue'>Sliding mass concepts</span></span></span>
! 1400:
! 1401: </p></td>
! 1402:
! 1403: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/10_Motion_W_Friction/msu-prob32.problem
! 1404:
! 1405: </p></td>
! 1406:
! 1407: <td width=77 class="Normal"> <p> <img width=59 height=23
! 1408:
! 1409: src="Session%20Tw2_files/image115.png" v:shapes="_x0000_i1063"> </p></td>
! 1410:
! 1411: </tr>
! 1412:
! 1413: <tr>
! 1414:
! 1415: <td width=15 class="Normal"> <p>9 </p></td>
! 1416:
! 1417: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/12_Work_Power_Energy\/msu-prob27\.problem\0022 \\t \0022_blank\0022"'><span
! 1418:
! 1419: class=MsoHyperlink><span style='color:blue'>Work, Power, Energy Concepts</span></span></span>
! 1420:
! 1421: </p></td>
! 1422:
! 1423: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/12_Work_Power_Energy/msu-prob27.problem
! 1424:
! 1425: </p></td>
! 1426:
! 1427: <td width=77 class="Normal"> <p> <img width=68 height=23
! 1428:
! 1429: src="Session%20Tw2_files/image118.png" v:shapes="_x0000_i1064"> </p></td>
! 1430:
! 1431: </tr>
! 1432:
! 1433: <tr>
! 1434:
! 1435: <td width=15 class="Normal"> <p>10 </p></td>
! 1436:
! 1437: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/13_EnergyConservation\/msu-prob32\.problem\0022 \\t \0022_blank\0022"'><span
! 1438:
! 1439: class=MsoHyperlink><span style='color:blue'>Bead on a Wire</span></span></span>
! 1440:
! 1441: </p></td>
! 1442:
! 1443: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/13_EnergyConservation/msu-prob32.problem
! 1444:
! 1445: </p></td>
! 1446:
! 1447: <td width=77 class="Normal"> <p> <img width=63 height=23
! 1448:
! 1449: src="Session%20Tw2_files/image121.png" v:shapes="_x0000_i1065"> </p></td>
! 1450:
! 1451: </tr>
! 1452:
! 1453: <tr>
! 1454:
! 1455: <td width=15 class="Normal"> <p>11 </p></td>
! 1456:
! 1457: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/20_Rot2_E_Trq_Accel\/msu-prob23\.problem\0022 \\t \0022_blank\0022"'><span
! 1458:
! 1459: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
! 1460:
! 1461: </p></td>
! 1462:
! 1463: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/20_Rot2_E_Trq_Accel/msu-prob23.problem
! 1464:
! 1465: </p></td>
! 1466:
! 1467: <td width=77 class="Normal"> <p> <img width=63 height=23
! 1468:
! 1469: src="Session%20Tw2_files/image124.png" v:shapes="_x0000_i1066"> </p></td>
! 1470:
! 1471: </tr>
! 1472:
! 1473: <tr>
! 1474:
! 1475: <td width=15 class="Normal"> <p>12 </p></td>
! 1476:
! 1477: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/21_Rot3_AngMom_Roll\/msu-prob38\.problem\0022 \\t \0022_blank\0022"'><span
! 1478:
! 1479: class=MsoHyperlink><span style='color:blue'>Flinstone Bowling</span></span></span>
! 1480:
! 1481: </p></td>
! 1482:
! 1483: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/21_Rot3_AngMom_Roll/msu-prob38.problem
! 1484:
! 1485: </p></td>
! 1486:
! 1487: <td width=77 class="Normal"> <p> <img width=63 height=23
! 1488:
! 1489: src="Session%20Tw2_files/image127.png" v:shapes="_x0000_i1067"> </p></td>
! 1490:
! 1491: </tr>
! 1492:
! 1493: <tr>
! 1494:
! 1495: <td width=15 class="Normal"> <p>13 </p></td>
! 1496:
! 1497: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/32_Fluids1_Pascal_Arch\/msu-prob12\.problem\0022 \\t \0022_blank\0022"'><span
! 1498:
! 1499: class=MsoHyperlink><span style='color:blue'>Boat on Pond</span></span></span>
! 1500:
! 1501: </p></td>
! 1502:
! 1503: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/32_Fluids1_Pascal_Arch/msu-prob12.problem
! 1504:
! 1505: </p></td>
! 1506:
! 1507: <td width=77 class="Normal"> <p> <img width=68 height=23
! 1508:
! 1509: src="Session%20Tw2_files/image130.png" v:shapes="_x0000_i1068"> </p></td>
! 1510:
! 1511: </tr>
! 1512:
! 1513: <tr>
! 1514:
! 1515: <td width=15 class="Normal"> </td>
! 1516:
! 1517: <td width=83 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
! 1518:
! 1519: <td width=298 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
! 1520:
! 1521: <td width=77 class="Normal"> <p align=center style='text-align:center'>É</p></td>
! 1522:
! 1523: </tr>
! 1524:
! 1525: </table>
! 1526:
! 1527: <p><span style='font-size:11.0pt'><b>Fig. 3.2.5</b></span><span
! 1528:
! 1529: style='font-size:11.0pt'>: Option response problems in course PHY183 SS02</span></p>
! 1530:
! 1531: <p><b>Fig. 3.2.5</b><span style='font-weight:normal'> includes a table, which
! 1532:
! 1533: shows the title of every option response problem in the first column. This title
! 1534:
! 1535: has a link to the original html page of the problem. In the second column
! 1536:
! 1537: the source address of the problem is shown. Third column of this table includes
! 1538:
! 1539: a button to analyze the studentsÕ data on this particular option response problem.
! 1540:
! 1541: When this button is clicked, all data about this problem is <i>restored</i></span>,
! 1542:
! 1543: for every student. Different versions of studentsÕ submissions are evaluated.
! 1544:
! 1545: The results are presented in a graphical chart as well as a numerical table.
! 1546:
! 1547: For example, if we select the analysis of <b>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem</b></p>
! 1548:
! 1549: <p> <span style='position:
! 1550:
! 1551: relative;z-index:0'><span style='position:absolute;left:-37px;top:-32px;
! 1552:
! 1553: width:248px;height:174px'> <table cellpadding=0 cellspacing=0> <tr> <td width=249 height=174 align=left valign=top bgcolor=white class="Normal"
! 1554:
! 1555: style='border:.75pt solid black;vertical-align:top;background:white'><span
! 1556:
! 1557: style='position:absolute;z-index:1'>
! 1558:
! 1559: <table cellpadding=0 cellspacing=0 width="100%">
! 1560:
! 1561: <tr>
! 1562:
! 1563: <td class="Normal"> <div v:shape="_x0000_s1026" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
! 1564:
! 1565: class=shape>
! 1566:
! 1567: <p class=FirstParagraph><span lang=PT-BR
! 1568:
! 1569: style='font-size:9.0pt'>A frictionless, massless pulley is attached to the
! 1570:
! 1571: ceiling, in a gravity field g. Mass Ma is greater than mass Mb. The
! 1572:
! 1573: tensions Tx,Ty, Tz, and the constant g are magnitudes. (For each,
! 1574:
! 1575: select: Greater than, Less than, Equal to, True, or False) </span></p>
! 1576:
! 1577: <p class=FirstParagraph><span lang=PT-BR style='font-size:9.0pt'> <img width=96 height=114
! 1578:
! 1579: src="Session%20Tw2_files/image132.jpg" v:shapes="_x0000_i1069"> <img width=125 height=120
! 1580:
! 1581: src="Session%20Tw2_files/image135.png" v:shapes="_x0000_i1070"> </span></p>
! 1582:
! 1583: </div></td>
! 1584:
! 1585: </tr>
! 1586:
! 1587: </table>
! 1588:
! 1589: </span></td></tr> </table>
! 1590:
! 1591: <p></p>
! 1592:
! 1593: <br clear=all>
! 1594:
! 1595: <p align=right style='text-align:right'> <span style='position:
! 1596:
! 1597: absolute;z-index:1;left:0px;margin-left:229px;margin-top:97px;width:235px;
! 1598:
! 1599: height:40px'> <table cellpadding=0 cellspacing=0> <tr> <td width=236 height=40 align=left valign=top bgcolor=white class="Normal" style='border:
! 1600:
! 1601: .75pt solid white;vertical-align:top;background:white'><span
! 1602:
! 1603: style='position:absolute;left:0pt;z-index:3'>
! 1604:
! 1605: <table cellpadding=0 cellspacing=0 width="100%">
! 1606:
! 1607: <tr>
! 1608:
! 1609: <td class="Normal"> <div v:shape="_x0000_s1028" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
! 1610:
! 1611: class=shape>
! 1612:
! 1613: <p><span style='font-size:9.0pt'><b>Fig. 3.2.7</b></span><span
! 1614:
! 1615: style='font-size:9.0pt'>: Graphical chart of student tries for </span></p>
! 1616:
! 1617: <p><span style='font-size:9.0pt'>
! 1618:
! 1619: Atwood Machine Problem
! 1620:
! 1621: according </span></p>
! 1622:
! 1623: <p><span style='font-size:9.0pt'>
! 1624:
! 1625: to every concept in 1 interval time.</span></p>
! 1626:
! 1627: </div></td>
! 1628:
! 1629: </tr>
! 1630:
! 1631: </table>
! 1632:
! 1633: </span></td></tr> </table> <img width=203 height=150
! 1634:
! 1635: src="Session%20Tw2_files/image137.png" v:shapes="_x0000_i1071">
! 1636:
! 1637: <p></p>
! 1638:
! 1639: <p><span style='font-size:9.0pt'><b>Fig. 3.2.6</b></span><span
! 1640:
! 1641: style='font-size:9.0pt'>: Atwood Machine option response problem in HW3<b> </b></span></p>
! 1642:
! 1643: <p><span style='font-size:11.0pt'>In addition, the data of studentsÕ tries
! 1644:
! 1645: are shown in a table as you see in <b>Fig. 3.2.8</b></span><span
! 1646:
! 1647: style='font-size:11.0pt'>. In the last row of the table you can see the time interval
! 1648:
! 1649: of this data and the overall correct and wrong answers separately. If an
! 1650:
! 1651: instructor wants to see the studentsÕ tries in different time intervals,
! 1652:
! 1653: he/she could set the number of intervals from 1 to 7 time intervals, and
! 1654:
! 1655: then recompute the analysis. </span></p>
! 1656:
! 1657: <table border=1 cellspacing=0 cellpadding=0>
! 1658:
! 1659: <tr>
! 1660:
! 1661: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 1662:
! 1663: </b></p></td>
! 1664:
! 1665: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 1666:
! 1667: </b></p></td>
! 1668:
! 1669: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 1670:
! 1671: </b></p></td>
! 1672:
! 1673: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 1674:
! 1675: </b></p></td>
! 1676:
! 1677: </tr>
! 1678:
! 1679: <tr>
! 1680:
! 1681: <td width=10 class="Normal"> <p>1</p></td>
! 1682:
! 1683: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 1684:
! 1685: acceleration if the two the string does not stretch. </p></td>
! 1686:
! 1687: <td width=38 bgcolor="white" class="Normal"> <p>1342 </p></td>
! 1688:
! 1689: <td width=35 bgcolor="white" class="Normal"> <p>433 </p></td>
! 1690:
! 1691: </tr>
! 1692:
! 1693: <tr>
! 1694:
! 1695: <td width=10 class="Normal"> <p>2</p></td>
! 1696:
! 1697: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 1698:
! 1699: is greater than the tension of the string attached to the ceiling.
! 1700:
! 1701: </p></td>
! 1702:
! 1703: <td width=38 bgcolor="white" class="Normal"> <p>585 </p></td>
! 1704:
! 1705: <td width=35 bgcolor="white" class="Normal"> <p>1190 </p></td>
! 1706:
! 1707: </tr>
! 1708:
! 1709: <tr>
! 1710:
! 1711: <td width=10 class="Normal"> <p>3</p></td>
! 1712:
! 1713: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is equals
! 1714:
! 1715: the two bottom tensions. (massless pulley) </p></td>
! 1716:
! 1717: <td width=38 bgcolor="white" class="Normal"> <p>1263 </p></td>
! 1718:
! 1719: <td width=35 bgcolor="white" class="Normal"> <p>512 </p></td>
! 1720:
! 1721: </tr>
! 1722:
! 1723: <tr>
! 1724:
! 1725: <td width=10 class="Normal"> <p>4</p></td>
! 1726:
! 1727: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the two
! 1728:
! 1729: masses are equal if mass of pulley=0 </p></td>
! 1730:
! 1731: <td width=38 bgcolor="white" class="Normal"> <p>1087 </p></td>
! 1732:
! 1733: <td width=35 bgcolor="white" class="Normal"> <p>688 </p></td>
! 1734:
! 1735: </tr>
! 1736:
! 1737: <tr>
! 1738:
! 1739: <td width=10 class="Normal"> <p>5</p></td>
! 1740:
! 1741: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 1742:
! 1743: upwards or downwards accordingly </p></td>
! 1744:
! 1745: <td width=38 bgcolor="white" class="Normal"> <p>757 </p></td>
! 1746:
! 1747: <td width=35 bgcolor="white" class="Normal"> <p>1018 </p></td>
! 1748:
! 1749: </tr>
! 1750:
! 1751: <tr>
! 1752:
! 1753: <td width=10 class="Normal"> <p>6</p></td>
! 1754:
! 1755: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 1756:
! 1757: downward </p></td>
! 1758:
! 1759: <td width=38 bgcolor="white" class="Normal"> <p>1354 </p></td>
! 1760:
! 1761: <td width=35 bgcolor="white" class="Normal"> <p>421 </p></td>
! 1762:
! 1763: </tr>
! 1764:
! 1765: <tr>
! 1766:
! 1767: <td width=10 class="Normal"> </td>
! 1768:
! 1769: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002] To:
! 1770:
! 1771: [Mon Feb 4 23:59:59 2002]</b></p></td>
! 1772:
! 1773: <td width=38 class="Normal"> <p>6388</p></td>
! 1774:
! 1775: <td width=35 class="Normal"> <p>4245</p></td>
! 1776:
! 1777: </tr>
! 1778:
! 1779: </table>
! 1780:
! 1781: <p><span style='font-size:11.0pt'><b>Fig. 3.2.8</b></span><span
! 1782:
! 1783: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
! 1784:
! 1785: to every concept in one time interval.</span></p>
! 1786:
! 1787: <p> <span
! 1788:
! 1789: style='position:relative;z-index:2'><span style='position:
! 1790:
! 1791: absolute;left:-109px;top:-166px;width:341px;height:24px'> <img width=341
! 1792:
! 1793: height=24 src="Session%20Tw2_files/image138.png" v:shapes="_x0000_s1027"> <img width=203 height=150
! 1794:
! 1795: src="Session%20Tw2_files/image140.png" v:shapes="_x0000_i1072"> <img width=203 height=150
! 1796:
! 1797: src="Session%20Tw2_files/image142.png" v:shapes="_x0000_i1073">
! 1798:
! 1799: <p></p>
! 1800:
! 1801: <table border=1 cellspacing=0 cellpadding=0>
! 1802:
! 1803: <tr>
! 1804:
! 1805: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 1806:
! 1807: </b></p></td>
! 1808:
! 1809: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 1810:
! 1811: </b></p></td>
! 1812:
! 1813: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 1814:
! 1815: </b></p></td>
! 1816:
! 1817: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 1818:
! 1819: </b></p></td>
! 1820:
! 1821: </tr>
! 1822:
! 1823: <tr>
! 1824:
! 1825: <td width=10 class="Normal"> <p>1</p></td>
! 1826:
! 1827: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 1828:
! 1829: acceleration if the two the string does not stretch. </p></td>
! 1830:
! 1831: <td width=38 bgcolor="white" class="Normal"> <p>124 </p></td>
! 1832:
! 1833: <td width=35 bgcolor="white" class="Normal"> <p>98 </p></td>
! 1834:
! 1835: </tr>
! 1836:
! 1837: <tr>
! 1838:
! 1839: <td width=10 class="Normal"> <p>2</p></td>
! 1840:
! 1841: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 1842:
! 1843: is greater than the tension of the string attached to the ceiling.
! 1844:
! 1845: </p></td>
! 1846:
! 1847: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
! 1848:
! 1849: <td width=35 bgcolor="white" class="Normal"> <p>178 </p></td>
! 1850:
! 1851: </tr>
! 1852:
! 1853: <tr>
! 1854:
! 1855: <td width=10 class="Normal"> <p>3</p></td>
! 1856:
! 1857: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
! 1858:
! 1859: equals the two bottom tensions. (massless pulley) </p></td>
! 1860:
! 1861: <td width=38 bgcolor="white" class="Normal"> <p>142 </p></td>
! 1862:
! 1863: <td width=35 bgcolor="white" class="Normal"> <p>80 </p></td>
! 1864:
! 1865: </tr>
! 1866:
! 1867: <tr>
! 1868:
! 1869: <td width=10 class="Normal"> <p>4</p></td>
! 1870:
! 1871: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
! 1872:
! 1873: two masses are equal if mass of pulley=0 </p></td>
! 1874:
! 1875: <td width=38 bgcolor="white" class="Normal"> <p>125 </p></td>
! 1876:
! 1877: <td width=35 bgcolor="white" class="Normal"> <p>97 </p></td>
! 1878:
! 1879: </tr>
! 1880:
! 1881: <tr>
! 1882:
! 1883: <td width=10 class="Normal"> <p>5</p></td>
! 1884:
! 1885: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 1886:
! 1887: upwards or downwards accordingly </p></td>
! 1888:
! 1889: <td width=38 bgcolor="white" class="Normal"> <p>64 </p></td>
! 1890:
! 1891: <td width=35 bgcolor="white" class="Normal"> <p>158 </p></td>
! 1892:
! 1893: </tr>
! 1894:
! 1895: <tr>
! 1896:
! 1897: <td width=10 class="Normal"> <p>6</p></td>
! 1898:
! 1899: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 1900:
! 1901: downward </p></td>
! 1902:
! 1903: <td width=38 bgcolor="white" class="Normal"> <p>151 </p></td>
! 1904:
! 1905: <td width=35 bgcolor="white" class="Normal"> <p>71 </p></td>
! 1906:
! 1907: </tr>
! 1908:
! 1909: <tr>
! 1910:
! 1911: <td width=10 class="Normal"> </td>
! 1912:
! 1913: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
! 1914:
! 1915: To: [Wed Jan 30 00:23:10 2002]</b></p></td>
! 1916:
! 1917: <td width=38 class="Normal"> <p>650</p></td>
! 1918:
! 1919: <td width=35 class="Normal"> <p>682</p></td>
! 1920:
! 1921: </tr>
! 1922:
! 1923: </table>
! 1924:
! 1925: <table border=1 cellspacing=0 cellpadding=0>
! 1926:
! 1927: <tr>
! 1928:
! 1929: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 1930:
! 1931: </b></p></td>
! 1932:
! 1933: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 1934:
! 1935: </b></p></td>
! 1936:
! 1937: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 1938:
! 1939: </b></p></td>
! 1940:
! 1941: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 1942:
! 1943: </b></p></td>
! 1944:
! 1945: </tr>
! 1946:
! 1947: <tr>
! 1948:
! 1949: <td width=10 class="Normal"> <p>1</p></td>
! 1950:
! 1951: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 1952:
! 1953: acceleration if the two the string does not stretch. </p></td>
! 1954:
! 1955: <td width=38 bgcolor="white" class="Normal"> <p>1218 </p></td>
! 1956:
! 1957: <td width=35 bgcolor="white" class="Normal"> <p>335 </p></td>
! 1958:
! 1959: </tr>
! 1960:
! 1961: <tr>
! 1962:
! 1963: <td width=10 class="Normal"> <p>2</p></td>
! 1964:
! 1965: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 1966:
! 1967: is greater than the tension of the string attached to the ceiling.
! 1968:
! 1969: </p></td>
! 1970:
! 1971: <td width=38 bgcolor="white" class="Normal"> <p>541 </p></td>
! 1972:
! 1973: <td width=35 bgcolor="white" class="Normal"> <p>1012 </p></td>
! 1974:
! 1975: </tr>
! 1976:
! 1977: <tr>
! 1978:
! 1979: <td width=10 class="Normal"> <p>3</p></td>
! 1980:
! 1981: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
! 1982:
! 1983: equals the two bottom tensions. (massless pulley) </p></td>
! 1984:
! 1985: <td width=38 bgcolor="white" class="Normal"> <p>1121 </p></td>
! 1986:
! 1987: <td width=35 bgcolor="white" class="Normal"> <p>432 </p></td>
! 1988:
! 1989: </tr>
! 1990:
! 1991: <tr>
! 1992:
! 1993: <td width=10 class="Normal"> <p>4</p></td>
! 1994:
! 1995: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
! 1996:
! 1997: two masses are equal if mass of pulley=0 </p></td>
! 1998:
! 1999: <td width=38 bgcolor="white" class="Normal"> <p>962 </p></td>
! 2000:
! 2001: <td width=35 bgcolor="white" class="Normal"> <p>591 </p></td>
! 2002:
! 2003: </tr>
! 2004:
! 2005: <tr>
! 2006:
! 2007: <td width=10 class="Normal"> <p>5</p></td>
! 2008:
! 2009: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 2010:
! 2011: upwards or downwards accordingly </p></td>
! 2012:
! 2013: <td width=38 bgcolor="white" class="Normal"> <p>693 </p></td>
! 2014:
! 2015: <td width=35 bgcolor="white" class="Normal"> <p>860 </p></td>
! 2016:
! 2017: </tr>
! 2018:
! 2019: <tr>
! 2020:
! 2021: <td width=10 class="Normal"> <p>6</p></td>
! 2022:
! 2023: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 2024:
! 2025: downward </p></td>
! 2026:
! 2027: <td width=38 bgcolor="white" class="Normal"> <p>1203 </p></td>
! 2028:
! 2029: <td width=35 bgcolor="white" class="Normal"> <p>350 </p></td>
! 2030:
! 2031: </tr>
! 2032:
! 2033: <tr>
! 2034:
! 2035: <td width=10 class="Normal"> </td>
! 2036:
! 2037: <td width=357 class="Normal"> <p><b>From:[Wed Jan 30 00:23:11 2002]
! 2038:
! 2039: To: [Mon Feb 4 23:59:59 2002]</b></p></td>
! 2040:
! 2041: <td width=38 class="Normal"> <p>5738</p></td>
! 2042:
! 2043: <td width=35 class="Normal"> <p>3563</p></td>
! 2044:
! 2045: </tr>
! 2046:
! 2047: </table>
! 2048:
! 2049: <p><span style='font-size:11.0pt'><b>Fig. 3.2.9</b></span><span
! 2050:
! 2051: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
! 2052:
! 2053: to every concept in 2 times interval.</span></p>
! 2054:
! 2055: <p>In <b>Fig. 3.2.9</b><span style='font-weight:normal'>, number of studentsÕ
! 2056:
! 2057: tries tables and the graphical chart are shown in 2 different time intervals.
! 2058:
! 2059: An instructor would be able to check whether the students have more wrong
! 2060:
! 2061: answers during the first days of opening the homework set, and how many
! 2062:
! 2063: students have tried during the first or the second interval. Since the
! 2064:
! 2065: problems are individualized he/she might be able to see how many students
! 2066:
! 2067: have tried to solve the problem after communicating with each other and
! 2068:
! 2069: understanding the concept. In Fig. 3.2. 10 the charts and tables
! 2070:
! 2071: of studentsÕ tries are shown in 3 time intervals. So if the homework should
! 2072:
! 2073: be done in one week, an instructor would be able to observe the distribution
! 2074:
! 2075: of studentsÕ tries every day separately after choosing the 7 time intervals.</span></p>
! 2076:
! 2077: <p> <img width=151 height=150
! 2078:
! 2079: src="Session%20Tw2_files/image144.png" v:shapes="_x0000_i1074"> <img width=151 height=150
! 2080:
! 2081: src="Session%20Tw2_files/image146.png" v:shapes="_x0000_i1075"> <img width=149 height=150
! 2082:
! 2083: src="Session%20Tw2_files/image148.png" v:shapes="_x0000_i1076"> </p>
! 2084:
! 2085: <table border=1 cellspacing=0 cellpadding=0>
! 2086:
! 2087: <tr>
! 2088:
! 2089: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 2090:
! 2091: </b></p></td>
! 2092:
! 2093: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 2094:
! 2095: </b></p></td>
! 2096:
! 2097: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 2098:
! 2099: </b></p></td>
! 2100:
! 2101: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 2102:
! 2103: </b></p></td>
! 2104:
! 2105: </tr>
! 2106:
! 2107: <tr>
! 2108:
! 2109: <td width=10 class="Normal"> <p>1</p></td>
! 2110:
! 2111: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 2112:
! 2113: acceleration if the two the string does not stretch. </p></td>
! 2114:
! 2115: <td width=38 bgcolor="white" class="Normal"> <p>31 </p></td>
! 2116:
! 2117: <td width=35 bgcolor="white" class="Normal"> <p>30 </p></td>
! 2118:
! 2119: </tr>
! 2120:
! 2121: <tr>
! 2122:
! 2123: <td width=10 class="Normal"> <p>2</p></td>
! 2124:
! 2125: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 2126:
! 2127: is greater than the tension of the string attached to the ceiling.
! 2128:
! 2129: </p></td>
! 2130:
! 2131: <td width=38 bgcolor="white" class="Normal"> <p>8 </p></td>
! 2132:
! 2133: <td width=35 bgcolor="white" class="Normal"> <p>53 </p></td>
! 2134:
! 2135: </tr>
! 2136:
! 2137: <tr>
! 2138:
! 2139: <td width=10 class="Normal"> <p>3</p></td>
! 2140:
! 2141: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
! 2142:
! 2143: equals the two bottom tensions. (massless pulley) </p></td>
! 2144:
! 2145: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
! 2146:
! 2147: <td width=35 bgcolor="white" class="Normal"> <p>17 </p></td>
! 2148:
! 2149: </tr>
! 2150:
! 2151: <tr>
! 2152:
! 2153: <td width=10 class="Normal"> <p>4</p></td>
! 2154:
! 2155: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
! 2156:
! 2157: two masses are equal if mass of pulley=0 </p></td>
! 2158:
! 2159: <td width=38 bgcolor="white" class="Normal"> <p>32 </p></td>
! 2160:
! 2161: <td width=35 bgcolor="white" class="Normal"> <p>29 </p></td>
! 2162:
! 2163: </tr>
! 2164:
! 2165: <tr>
! 2166:
! 2167: <td width=10 class="Normal"> <p>5</p></td>
! 2168:
! 2169: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 2170:
! 2171: upwards or downwards accordingly </p></td>
! 2172:
! 2173: <td width=38 bgcolor="white" class="Normal"> <p>20 </p></td>
! 2174:
! 2175: <td width=35 bgcolor="white" class="Normal"> <p>41 </p></td>
! 2176:
! 2177: </tr>
! 2178:
! 2179: <tr>
! 2180:
! 2181: <td width=10 class="Normal"> <p>6</p></td>
! 2182:
! 2183: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 2184:
! 2185: downward </p></td>
! 2186:
! 2187: <td width=38 bgcolor="white" class="Normal"> <p>42 </p></td>
! 2188:
! 2189: <td width=35 bgcolor="white" class="Normal"> <p>19 </p></td>
! 2190:
! 2191: </tr>
! 2192:
! 2193: <tr>
! 2194:
! 2195: <td width=10 class="Normal"> </td>
! 2196:
! 2197: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
! 2198:
! 2199: To: [Mon Jan 28 00:30:53 2002]</b></p></td>
! 2200:
! 2201: <td width=38 class="Normal"> <p>177</p></td>
! 2202:
! 2203: <td width=35 class="Normal"> <p>189</p></td>
! 2204:
! 2205: </tr>
! 2206:
! 2207: </table>
! 2208:
! 2209: <table border=1 cellspacing=0 cellpadding=0>
! 2210:
! 2211: <tr>
! 2212:
! 2213: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 2214:
! 2215: </b></p></td>
! 2216:
! 2217: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 2218:
! 2219: </b></p></td>
! 2220:
! 2221: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 2222:
! 2223: </b></p></td>
! 2224:
! 2225: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 2226:
! 2227: </b></p></td>
! 2228:
! 2229: </tr>
! 2230:
! 2231: <tr>
! 2232:
! 2233: <td width=10 class="Normal"> <p>1</p></td>
! 2234:
! 2235: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 2236:
! 2237: acceleration if the two the string does not stretch. </p></td>
! 2238:
! 2239: <td width=38 bgcolor="white" class="Normal"> <p>692 </p></td>
! 2240:
! 2241: <td width=35 bgcolor="white" class="Normal"> <p>257 </p></td>
! 2242:
! 2243: </tr>
! 2244:
! 2245: <tr>
! 2246:
! 2247: <td width=10 class="Normal"> <p>2</p></td>
! 2248:
! 2249: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 2250:
! 2251: is greater than the tension of the string attached to the ceiling.
! 2252:
! 2253: </p></td>
! 2254:
! 2255: <td width=38 bgcolor="white" class="Normal"> <p>321 </p></td>
! 2256:
! 2257: <td width=35 bgcolor="white" class="Normal"> <p>628 </p></td>
! 2258:
! 2259: </tr>
! 2260:
! 2261: <tr>
! 2262:
! 2263: <td width=10 class="Normal"> <p>3</p></td>
! 2264:
! 2265: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
! 2266:
! 2267: equals the two bottom tensions. (massless pulley) </p></td>
! 2268:
! 2269: <td width=38 bgcolor="white" class="Normal"> <p>690 </p></td>
! 2270:
! 2271: <td width=35 bgcolor="white" class="Normal"> <p>259 </p></td>
! 2272:
! 2273: </tr>
! 2274:
! 2275: <tr>
! 2276:
! 2277: <td width=10 class="Normal"> <p>4</p></td>
! 2278:
! 2279: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
! 2280:
! 2281: two masses are equal if mass of pulley=0 </p></td>
! 2282:
! 2283: <td width=38 bgcolor="white" class="Normal"> <p>590 </p></td>
! 2284:
! 2285: <td width=35 bgcolor="white" class="Normal"> <p>359 </p></td>
! 2286:
! 2287: </tr>
! 2288:
! 2289: <tr>
! 2290:
! 2291: <td width=10 class="Normal"> <p>5</p></td>
! 2292:
! 2293: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 2294:
! 2295: upwards or downwards accordingly </p></td>
! 2296:
! 2297: <td width=38 bgcolor="white" class="Normal"> <p>399 </p></td>
! 2298:
! 2299: <td width=35 bgcolor="white" class="Normal"> <p>550 </p></td>
! 2300:
! 2301: </tr>
! 2302:
! 2303: <tr>
! 2304:
! 2305: <td width=10 class="Normal"> <p>6</p></td>
! 2306:
! 2307: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 2308:
! 2309: downward </p></td>
! 2310:
! 2311: <td width=38 bgcolor="white" class="Normal"> <p>703 </p></td>
! 2312:
! 2313: <td width=35 bgcolor="white" class="Normal"> <p>246 </p></td>
! 2314:
! 2315: </tr>
! 2316:
! 2317: <tr>
! 2318:
! 2319: <td width=10 class="Normal"> </td>
! 2320:
! 2321: <td width=357 class="Normal"> <p><b>From:[Mon Jan 28 00:30:54 2002]
! 2322:
! 2323: To: [Fri Feb 1 00:15:25 2002]</b></p></td>
! 2324:
! 2325: <td width=38 class="Normal"> <p>3395</p></td>
! 2326:
! 2327: <td width=35 class="Normal"> <p>2281</p></td>
! 2328:
! 2329: </tr>
! 2330:
! 2331: </table>
! 2332:
! 2333: <table border=1 cellspacing=0 cellpadding=0>
! 2334:
! 2335: <tr>
! 2336:
! 2337: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
! 2338:
! 2339: </b></p></td>
! 2340:
! 2341: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
! 2342:
! 2343: </b></p></td>
! 2344:
! 2345: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
! 2346:
! 2347: </b></p></td>
! 2348:
! 2349: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
! 2350:
! 2351: </b></p></td>
! 2352:
! 2353: </tr>
! 2354:
! 2355: <tr>
! 2356:
! 2357: <td width=10 class="Normal"> <p>1</p></td>
! 2358:
! 2359: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
! 2360:
! 2361: acceleration if the two the string does not stretch. </p></td>
! 2362:
! 2363: <td width=38 bgcolor="white" class="Normal"> <p>619 </p></td>
! 2364:
! 2365: <td width=35 bgcolor="white" class="Normal"> <p>147 </p></td>
! 2366:
! 2367: </tr>
! 2368:
! 2369: <tr>
! 2370:
! 2371: <td width=10 class="Normal"> <p>2</p></td>
! 2372:
! 2373: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
! 2374:
! 2375: is greater than the tension of the string attached to the ceiling.
! 2376:
! 2377: </p></td>
! 2378:
! 2379: <td width=38 bgcolor="white" class="Normal"> <p>256 </p></td>
! 2380:
! 2381: <td width=35 bgcolor="white" class="Normal"> <p>510 </p></td>
! 2382:
! 2383: </tr>
! 2384:
! 2385: <tr>
! 2386:
! 2387: <td width=10 class="Normal"> <p>3</p></td>
! 2388:
! 2389: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
! 2390:
! 2391: equals the two bottom tensions. (massless pulley) </p></td>
! 2392:
! 2393: <td width=38 bgcolor="white" class="Normal"> <p>529 </p></td>
! 2394:
! 2395: <td width=35 bgcolor="white" class="Normal"> <p>237 </p></td>
! 2396:
! 2397: </tr>
! 2398:
! 2399: <tr>
! 2400:
! 2401: <td width=10 class="Normal"> <p>4</p></td>
! 2402:
! 2403: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
! 2404:
! 2405: two masses are equal if mass of pulley=0 </p></td>
! 2406:
! 2407: <td width=38 bgcolor="white" class="Normal"> <p>465 </p></td>
! 2408:
! 2409: <td width=35 bgcolor="white" class="Normal"> <p>301 </p></td>
! 2410:
! 2411: </tr>
! 2412:
! 2413: <tr>
! 2414:
! 2415: <td width=10 class="Normal"> <p>5</p></td>
! 2416:
! 2417: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
! 2418:
! 2419: upwards or downwards accordingly </p></td>
! 2420:
! 2421: <td width=38 bgcolor="white" class="Normal"> <p>338 </p></td>
! 2422:
! 2423: <td width=35 bgcolor="white" class="Normal"> <p>428 </p></td>
! 2424:
! 2425: </tr>
! 2426:
! 2427: <tr>
! 2428:
! 2429: <td width=10 class="Normal"> <p>6</p></td>
! 2430:
! 2431: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
! 2432:
! 2433: downward </p></td>
! 2434:
! 2435: <td width=38 bgcolor="white" class="Normal"> <p>609 </p></td>
! 2436:
! 2437: <td width=35 bgcolor="white" class="Normal"> <p>157 </p></td>
! 2438:
! 2439: </tr>
! 2440:
! 2441: <tr>
! 2442:
! 2443: <td width=10 class="Normal"> </td>
! 2444:
! 2445: <td width=357 class="Normal"> <p><b>From:[Fri Feb 1 00:15:26 2002] To:
! 2446:
! 2447: [Mon Feb 4 23:59:59 2002]</b></p></td>
! 2448:
! 2449: <td width=38 class="Normal"> <p>2816</p></td>
! 2450:
! 2451: <td width=35 class="Normal"> <p>1775</p></td>
! 2452:
! 2453: </tr>
! 2454:
! 2455: </table>
! 2456:
! 2457: <p><b>Fig. 3.2. 10</b><span style='font-weight:normal'>: Table of student
! 2458:
! 2459: tries for Atwood Machine Problem according to every concept in 3 times
! 2460:
! 2461: interval.</span></p>
! 2462:
! 2463: <h3><a name="_Toc421867142">Student Assessment</a></h3>
! 2464:
! 2465: <p class=MsoBodyText2><span style='font-size:11.0pt'>This option provides
! 2466:
! 2467: some reports about the current educational situation of every student
! 2468:
! 2469: as you see in <b>Fig. 3.2.11</b></span><span style='font-size:11.0pt'>.
! 2470:
! 2471: A ÔYÕ show that the student has solved the problem and ÔNÕ shows his/her
! 2472:
! 2473: failure. A Ô-Ô denotes a unattempted problem. The numbers in the
! 2474:
! 2475: right column show the total number of tries of the student in solving
! 2476:
! 2477: the corresponding problems.</span></p>
! 2478:
! 2479: <form>
! 2480:
! 2481: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
! 2482:
! 2483: <p style='border:none;padding:0in;'>Total number of students : 263<br>
! 2484:
! 2485: <br>
! 2486:
! 2487: <img width=68 height=23
! 2488:
! 2489: src="Session%20Tw2_files/image151.png" v:shapes="_x0000_i1077"> <br>
! 2490:
! 2491: <b>Select Map </b><span style='font-weight:normal'>
! 2492:
! 2493: <img width=215 height=18
! 2494:
! 2495: src="Session%20Tw2_files/image154.png" v:shapes="_x0000_i1078"> <br>
! 2496:
! 2497: </span><b>Select Section</b><span style='font-weight:normal'> <img width=89 height=18
! 2498:
! 2499: src="Session%20Tw2_files/image157.png" v:shapes="_x0000_i1079"> <br>
! 2500:
! 2501: </span><b>Select Student</b><span style='font-weight:normal'> <img width=89 height=18
! 2502:
! 2503: src="Session%20Tw2_files/image160.png" v:shapes="_x0000_i1080"> <br>
! 2504:
! 2505: <br>
! 2506:
! 2507: </span></p>
! 2508:
! 2509: <p style='border:none;padding:0in;'> <img width=93 height=23
! 2510:
! 2511: src="Session%20Tw2_files/image163.png" v:shapes="_x0000_i1081"> </p>
! 2512:
! 2513: </div>
! 2514:
! 2515: <table border=1 cellspacing=0 cellpadding=0>
! 2516:
! 2517: <tr>
! 2518:
! 2519: <td width=21 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>#
! 2520:
! 2521: </b></p></td>
! 2522:
! 2523: <td width=177 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Set
! 2524:
! 2525: Title </b></p></td>
! 2526:
! 2527: <td width=122 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Results
! 2528:
! 2529: </b></p></td>
! 2530:
! 2531: <td width=153 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Tries
! 2532:
! 2533: </b></p></td>
! 2534:
! 2535: </tr>
! 2536:
! 2537: <tr>
! 2538:
! 2539: <td width=21 class="Normal"> <p style='line-height:150%'>1 </p></td>
! 2540:
! 2541: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/phy183.sequence
! 2542:
! 2543: </p></td>
! 2544:
! 2545: <td width=122 class="Normal"> </td>
! 2546:
! 2547: <td width=153 class="Normal"> </td>
! 2548:
! 2549: </tr>
! 2550:
! 2551: <tr>
! 2552:
! 2553: <td width=21 class="Normal"> <p style='line-height:150%'>2 </p></td>
! 2554:
! 2555: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap1/calckap1.sequence
! 2556:
! 2557: </p></td>
! 2558:
! 2559: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYY
! 2560:
! 2561: </span></p></td>
! 2562:
! 2563: <td width=153 class="Normal"> <p style='line-height:150%'>1,1,1,2,1,1,1,1,1,7,9,3,2</p></td>
! 2564:
! 2565: </tr>
! 2566:
! 2567: <tr>
! 2568:
! 2569: <td width=21 class="Normal"> <p style='line-height:150%'>3 </p></td>
! 2570:
! 2571: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap2/calckap2.sequence
! 2572:
! 2573: </p></td>
! 2574:
! 2575: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYNYYYYNNYYYYYYYY
! 2576:
! 2577: </span></p></td>
! 2578:
! 2579: <td width=153 class="Normal"> <p style='line-height:150%'>10,1,0,1,1,2,1,4,5,1,1,1,3,2,1,1,1</p></td>
! 2580:
! 2581: </tr>
! 2582:
! 2583: <tr>
! 2584:
! 2585: <td width=21 class="Normal"> <p style='line-height:150%'>4 </p></td>
! 2586:
! 2587: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap3/calckap3.sequence
! 2588:
! 2589: </p></td>
! 2590:
! 2591: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYNYYYYYYYYYY
! 2592:
! 2593: </span></p></td>
! 2594:
! 2595: <td width=153 class="Normal"> <p style='line-height:150%'>4,3,5,1,1,8,2,3,20,1,1,1,1,1,2,3,2,2,3</p></td>
! 2596:
! 2597: </tr>
! 2598:
! 2599: <tr>
! 2600:
! 2601: <td width=21 class="Normal"> <p style='line-height:150%'>5 </p></td>
! 2602:
! 2603: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap4/calckap4.sequence
! 2604:
! 2605: </p></td>
! 2606:
! 2607: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>NYYYYYYYYYYYYYYY
! 2608:
! 2609: </span></p></td>
! 2610:
! 2611: <td width=153 class="Normal"> <p style='line-height:150%'>20,1,1,1,3,3,2,3,4,2,3,2,1,1,2,5</p></td>
! 2612:
! 2613: </tr>
! 2614:
! 2615: <tr>
! 2616:
! 2617: <td width=21 class="Normal"> <p style='line-height:150%'>6 </p></td>
! 2618:
! 2619: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap5/calckap5.sequence
! 2620:
! 2621: </p></td>
! 2622:
! 2623: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYY-YY
! 2624:
! 2625: </span></p></td>
! 2626:
! 2627: <td width=153 class="Normal"> <p style='line-height:150%'>5,2,1,9,12,1,3,12,1,2,1,,1,3</p></td>
! 2628:
! 2629: </tr>
! 2630:
! 2631: <tr>
! 2632:
! 2633: <td width=21 class="Normal"> <p style='line-height:150%'>7 </p></td>
! 2634:
! 2635: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap6/calckap6.sequence
! 2636:
! 2637: </p></td>
! 2638:
! 2639: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYY
! 2640:
! 2641: </span></p></td>
! 2642:
! 2643: <td width=153 class="Normal"> <p style='line-height:150%'>3,2,4,2,1,1,2,1,1,9,2,3,2,2</p></td>
! 2644:
! 2645: </tr>
! 2646:
! 2647: <tr>
! 2648:
! 2649: <td width=21 class="Normal"> <p style='line-height:150%'>8 </p></td>
! 2650:
! 2651: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap7/calckap7.sequence
! 2652:
! 2653: </p></td>
! 2654:
! 2655: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYYYYY
! 2656:
! 2657: </span></p></td>
! 2658:
! 2659: <td width=153 class="Normal"> <p style='line-height:150%'>4,1,3,1,10,4,1,1,2,1,1,2,1,2,1,3,1,3</p></td>
! 2660:
! 2661: </tr>
! 2662:
! 2663: <tr>
! 2664:
! 2665: <td width=21 class="Normal"> <p style='line-height:150%'>9 </p></td>
! 2666:
! 2667: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap8/calckap8.sequence
! 2668:
! 2669: </p></td>
! 2670:
! 2671: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYY
! 2672:
! 2673: </span></p></td>
! 2674:
! 2675: <td width=153 class="Normal"> <p style='line-height:150%'>4,3,1,2,3,3,4,3,3,1,1,4,1,1,7</p></td>
! 2676:
! 2677: </tr>
! 2678:
! 2679: <tr>
! 2680:
! 2681: <td width=21 class="Normal"> <p style='line-height:150%'>10 </p></td>
! 2682:
! 2683: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap9/calckap9.sequence
! 2684:
! 2685: </p></td>
! 2686:
! 2687: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYN-NYYNY
! 2688:
! 2689: </span></p></td>
! 2690:
! 2691: <td width=153 class="Normal"> <p style='line-height:150%'>1,1,1,2,1,,2,2,1,6,4</p></td>
! 2692:
! 2693: </tr>
! 2694:
! 2695: <tr>
! 2696:
! 2697: <td width=21 class="Normal"> <p style='line-height:150%'>11 </p></td>
! 2698:
! 2699: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap10/calckap10.sequence
! 2700:
! 2701: </p></td>
! 2702:
! 2703: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYY
! 2704:
! 2705: </span></p></td>
! 2706:
! 2707: <td width=153 class="Normal"> <p style='line-height:150%'>2,1,1,1,1,1,1,1,1,1,1,1</p></td>
! 2708:
! 2709: </tr>
! 2710:
! 2711: <tr>
! 2712:
! 2713: <td width=21 class="Normal"> <p style='line-height:150%'>12 </p></td>
! 2714:
! 2715: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap11/calckap11.sequence
! 2716:
! 2717: </p></td>
! 2718:
! 2719: <td width=122 class="Normal"> <p style='line-height:150%'>-----------------
! 2720:
! 2721: </p></td>
! 2722:
! 2723: <td width=153 class="Normal"> <p style='line-height:150%'>0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0</p></td>
! 2724:
! 2725: </tr>
! 2726:
! 2727: </table>
! 2728:
! 2729: <p><span style='layout-grid-mode:line'><b>Fig. 3.2. 5</b></span><span
! 2730:
! 2731: style='layout-grid-mode:line'>: A sample of a student homework results and tries</span></p>
! 2732:
! 2733: <p><span style='font-size:11.0pt;layout-grid-mode:line'>We plan to present
! 2734:
! 2735: several other reports in this page as well. Some student classification
! 2736:
! 2737: reports also would be depicted here.</span></p>
! 2738:
! 2739: <p><span style='font-size:11.0pt;layout-grid-mode:line'>In Òproblem statsÓ
! 2740:
! 2741: and Òstudent assessmentÓ pages, an instructor can limit the range of
! 2742:
! 2743: his/her information to a particular section or a particular homework
! 2744:
! 2745: set. So, an instructor would be able to load the statistics table
! 2746:
! 2747: or student tries in Òstudent assessmentÓ table to a particular map or
! 2748:
! 2749: section. </span><span style='font-size:11.0pt'>After changing the map
! 2750:
! 2751: or section, he/she would be able to see the results via the recalculating
! 2752:
! 2753: the computation on that page. </span><span style='font-size:11.0pt;
! 2754:
! 2755: font-family:Arial;layout-grid-mode:line'></span></p>
! 2756:
! 2757: <h3><a name="_Toc421867143"><span style='layout-grid-mode:line'>Future
! 2758:
! 2759: work, using activity.log to classify the students</span></a></h3>
! 2760:
! 2761: <p><span style='font-size:11.0pt'>The problem is whether we can find the
! 2762:
! 2763: good features for <i>classifying</i></span><span style='font-size:
! 2764:
! 2765: 11.0pt'> students? If so, we would be able to identify a <i>predictor</i></span><span
! 2766:
! 2767: style='font-size:11.0pt'> for any individual student after doing a couple of homework
! 2768:
! 2769: sets. With this information, we would be able to <i>help</i></span><span
! 2770:
! 2771: style='font-size:11.0pt'> a student use the resources better. <span style='layout-grid-mode:line'>As
! 2772:
! 2773: the first step of data mining stuff w</span>e want to make an initial
! 2774:
! 2775: effort to classify the students. </span></p>
! 2776:
! 2777: <p><span style='font-size:11.0pt'>Preprocessing and finding the useful
! 2778:
! 2779: student data and segmenting may be a difficult task. Internally, one
! 2780:
! 2781: part of this data is stored in a student directory:</span></p>
! 2782:
! 2783: <p><span style='font-size:11.0pt'> </span><span style='font-size:11.0pt;font-family:"Courier New"'>/</span><span
! 2784:
! 2785: style='font-size:9.0pt;font-family:"Courier New"'>home/httpd/lonUsers/<i>domain</i></span><span
! 2786:
! 2787: style='font-size:9.0pt;font-family:"Courier New"'>/<i>1st.char</i></span><span
! 2788:
! 2789: style='font-size:9.0pt;font-family:"Courier New"'>/<i>2nd.char</i></span><span
! 2790:
! 2791: style='font-size:9.0pt;font-family:"Courier New"'>/<i>3rd.char</i></span><span
! 2792:
! 2793: style='font-size:9.0pt;font-family:"Courier New"'>/<i>username</i></span><span
! 2794:
! 2795: style='font-size:9.0pt;font-family:"Courier New"'>/</span></p>
! 2796:
! 2797: <p class=MsoHeader><span style='font-size:11.0pt'>For example: /home/httpd/lonUsers/msu/m/i/n/minaeibi/</span></p>
! 2798:
! 2799: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Since spring semester
! 2800:
! 2801: 2002, LON-CAPA has logged every activity of every student who has used</span><span style='font-size:11.0pt'>
! 2802:
! 2803: online educational resources and their recorded paths through the web.
! 2804:
! 2805: So another part of data is stored in Òactivity.logÓ which is located
! 2806:
! 2807: in course directory.</span></p>
! 2808:
! 2809: <p><span style='font-size:11.0pt'>The student data restored from .db files
! 2810:
! 2811: in student directory and is fetched into a hash table. The special hash
! 2812:
! 2813: keys Ò<i>keysÓ</i></span><span style='font-size:11.0pt'>, Ò<i>versionÓ</i></span><span
! 2814:
! 2815: style='font-size:11.0pt'> and Ò<i>timestampÓ</i></span><span style='font-size:
! 2816:
! 2817: 11.0pt'> were evaluated from the hash. The <i>version</i></span><span
! 2818:
! 2819: style='font-size:11.0pt'> will be equal to the total number of versions of the
! 2820:
! 2821: data that have been stored. The <i>timestamp</i></span><span style='font-size:
! 2822:
! 2823: 11.0pt'> attribute is the UNIX time the data was stored. <i>keys</i></span><span
! 2824:
! 2825: style='font-size:11.0pt'> is available in every historical section to list which
! 2826:
! 2827: keys were added or changed at a specific historical revision of a hash.
! 2828:
! 2829: We extract the features from a structured homework data, which is stored
! 2830:
! 2831: as particular URLÕs. For example the result of solving homeworkÕs problem
! 2832:
! 2833: by students could be extracted from </span><span style='font-size:9.0pt;
! 2834:
! 2835: font-family:"Courier New"'><i>resource.partid.solved</i></span><span
! 2836:
! 2837: style='font-size:11.0pt;font-family:"Courier New"'>, </span><span
! 2838:
! 2839: style='font-size:11.0pt'>the total number of the students for solving the problem
! 2840:
! 2841: could be extracted from </span><span style='font-size:9.0pt;font-family:
! 2842:
! 2843: "Courier New"'><i>resource.partid.tries</i></span><span style='font-size:11.0pt;
! 2844:
! 2845: font-family:"Courier New"'>,</span><span style='font-size:11.0pt'> and so forth.</span></p>
! 2846:
! 2847: <p><span style='font-size:11.0pt'>All data stored in activity.log includes
! 2848:
! 2849: <i>user name</i></span><span style='font-size:11.0pt'>, <i>time</i></span><span
! 2850:
! 2851: style='font-size:11.0pt'> and <i>resource URL</i></span><span style='font-size:
! 2852:
! 2853: 11.0pt'>. We can divide these data into six types of URLs, listed below, according
! 2854:
! 2855: to their importance for data mining: </span></p>
! 2856:
! 2857: <p style='line-height:150%'><span style='font-size:11.0pt'>1. <b><u>problems:</u></b></span><span
! 2858:
! 2859: style='font-size:11.0pt'> are the most useful data. i.e.<b><u> </u></b></span><span
! 2860:
! 2861: style='font-size:7.0pt'><b><u>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
! 2862:
! 2863: <br>
! 2864:
! 2865: <span style='font-size:11.0pt'>2. <b>html pages</b></span><span
! 2866:
! 2867: style='font-size:11.0pt'> to those are some links in the problems. i.e. </span><span
! 2868:
! 2869: style='font-size:7.0pt'><b>msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
! 2870:
! 2871: <br>
! 2872:
! 2873: <span style='font-size:11.0pt'>3. <i>the images</i></span><span
! 2874:
! 2875: style='font-size:11.0pt'>, which are loaded in above html pages. i.e. <i>/res/msu/mmp/kap14/picts/backsoun.gif</i></span><span
! 2876:
! 2877: style='font-size:11.0pt'> .</span></p>
! 2878:
! 2879: <p style='line-height:150%'><span style='font-size:11.0pt'>4. <u>loncapa
! 2880:
! 2881: routines</u>: i.e. <u>/adm/navmaps,</u> or <u>/adm/roles,</u>
! 2882:
! 2883: or <u>/adm/logout</u>.<br>
! 2884:
! 2885: 5. <i><u>Posted data</u></i></span><span style='font-size:11.0pt'> by
! 2886:
! 2887: students: i.e. <i><u>resource.0.11.submission=27.11</u></i></span><span style='font-size:
! 2888:
! 2889: 11.0pt'> <br>
! 2890:
! 2891: 6. remote control gif files: i.e.: /res/adm/pages/v.gif </span></p>
! 2892:
! 2893: <p>So, activity.log usually grows fast, when students have more access
! 2894:
! 2895: to the educational resources. We have brought a sample of different
! 2896:
! 2897: types of data which are logged in activity.log after a preprocessing
! 2898:
! 2899: phase as follows: </p>
! 2900:
! 2901: <p><u>144) 1010955846: studentX --> /adm/navmaps</u> <br>
! 2902:
! 2903: <i>145) 1010955205: studentX --> /res/msu/mmp/kap14/picts/beta_eqn.gif</i><span
! 2904:
! 2905: style='font-style:normal'> <br>
! 2906:
! 2907: <u>146) 1010955685: studentX --> /adm/navmaps</u> <br>
! 2908:
! 2909: <u>147) 1010955988: studentX --> /adm/navmaps</u> <br>
! 2910:
! 2911: </span><span style='font-size:8.0pt'><b>148) 1010955998: studentX -->
! 2912:
! 2913: msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
! 2914:
! 2915: <br>
! 2916:
! 2917: <i>149) 1010955999: studentX --> /res/msu/mmp/kap14/picts/velocity_eqn3.gif</i>
! 2918:
! 2919: <br>
! 2920:
! 2921: <i>150) 1010956000: studentX --> /res/msu/mmp/kap14/picts/time_eqn.gif</i><span style='font-style:normal'>
! 2922:
! 2923: <br>
! 2924:
! 2925: 151) 1010954609: studentX --> /res/adm/pages/grds.gif <br>
! 2926:
! 2927: </span><i>152) 1010954611: studentX --> /res/msu/mmp/wordproc.gif</i><span
! 2928:
! 2929: style='font-style:normal'> <br>
! 2930:
! 2931: 153) 1010954626: studentX --> /res/adm/pages/i.gif <br>
! 2932:
! 2933: </span><span style='font-size:8.0pt'><b>154) 1010955717: studentX -->
! 2934:
! 2935: msu/mmp/kap14/kap14.sequence___1___msu/mmp/kap14/cd392.htm</b></span>
! 2936:
! 2937: <br>
! 2938:
! 2939: <i>155) 1010955717: studentX --> /res/msu/mmp/kap14/picts/backsoun.gif</i>
! 2940:
! 2941: <br>
! 2942:
! 2943: <span style='font-size:8.0pt'><b>156) 1010955920: studentX --> msu/mmp/kap14/kap14.sequence___3___msu/mmp/kap14/cd394.htm</b></span>
! 2944:
! 2945: <br>
! 2946:
! 2947: <i>157) 1010955921: studentX --> /res/msu/mmp/gifs/demo.gif</i><span
! 2948:
! 2949: style='font-style:normal'> <br>
! 2950:
! 2951: 158) 1010956113: studentX --> /res/adm/pages/v.gif <br>
! 2952:
! 2953: 159) 1010954629: studentX --> /res/adm/pages/eval.gif <br>
! 2954:
! 2955: 160) 1010954631: studentX --> /res/adm/pages/back.gif <br>
! 2956:
! 2957: 161) 1010954632: studentX --> /res/adm/pages/b.gif <br>
! 2958:
! 2959: 162) 1010954633: studentX --> /res/adm/pages/r.gif <br>
! 2960:
! 2961: </span><span style='font-size:9.0pt'><b>163) 1010955754:</b></span><b>
! 2962:
! 2963: studentX --> msu/mmp/kap14/kap14.sequence___2___msu/mmp/kap14/cd393.htm</b><span
! 2964:
! 2965: style='font-weight:normal'> <br>
! 2966:
! 2967: <i>164) 1010955756: studentX --> /res/msu/mmp/kap14/picts/asound.jpg</i></span>
! 2968:
! 2969: <br>
! 2970:
! 2971: <i>165) 1010955762: studentX --> /res/msu/mmp/kap14/picts/sensor.jpg</i>
! 2972:
! 2973: <br>
! 2974:
! 2975: <i>166) 1010955999: studentX --> /res/msu/mmp/gifs2/example.gif</i><span
! 2976:
! 2977: style='font-style:normal'> <br>
! 2978:
! 2979: 173) 1010955687: studentX --> /res/adm/pages/u.gif <br>
! 2980:
! 2981: 174) 1010955688: studentX --> /res/adm/pages/s.gif <br>
! 2982:
! 2983: 175) 1010955688: studentX --> /res/adm/pages/e.gif <br>
! 2984:
! 2985: </span><span style='font-size:9.0pt'><b>176) 1010956528:</b></span><b>
! 2986:
! 2987: studentX</b><span
! 2988:
! 2989: style='font-size:9.0pt'><b> --> msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></span>
! 2990:
! 2991: <br>
! 2992:
! 2993: <i><u>177) Sent data</u></i> <br>
! 2994:
! 2995: <span style='font-size:9.0pt'><b><u>178) 1010956536: </u></b></span><b><u>studentX</u></b><span
! 2996:
! 2997: style='font-size:9.0pt'><u><b> --></b></u></span><b><u> </u></b><span
! 2998:
! 2999: style='font-size:9.0pt'><u><b>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></u></span>
! 3000:
! 3001: <br>
! 3002:
! 3003: <i><u>179) Sent data HWVAL11=27.11</u></i> <br>
! 3004:
! 3005: <span style='font-size:9.0pt'><b><u>180) 1010956536:</u></b></span><b><u>
! 3006:
! 3007: studentX</u></b><span style='font-size:9.0pt'><u><b> --></b></u></span><b><u>
! 3008:
! 3009: </u></b><span style='font-size:9.0pt'><u><b>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></u></span>
! 3010:
! 3011: <br>
! 3012:
! 3013: <i><u>181) Sent data resource.0.11.submission=27.11</u></i> <br>
! 3014:
! 3015: <span style='font-size:9.0pt'><b><u>182) 1010956702: studentX -->
! 3016:
! 3017: msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
! 3018:
! 3019: <br>
! 3020:
! 3021: <span style='font-size:11.0pt'><i><u>183) Sent data</u></i></span><span
! 3022:
! 3023: style='font-size:11.0pt'> <br>
! 3024:
! 3025: <i>184) 1010955921: studentX --> /res/msu/mmp/kap14/picts/areal.gif</i></span><span
! 3026:
! 3027: style='font-size:11.0pt'> <br>
! 3028:
! 3029: 185) 1010955731: studentX --> /res/adm/pages/n.gif <br>
! 3030:
! 3031: <br>
! 3032:
! 3033: </span></p>
! 3034:
! 3035: <p class=H5> <span
! 3036:
! 3037: style='font-size:11.0pt;font-family:Symbol;font-weight:normal'>á<span
! 3038:
! 3039: style='font:7.0pt "Times New Roman"'> </span></span>
! 3040:
! 3041: <span
! 3042:
! 3043: style='font-size:11.0pt;font-family:Arial'>Feature Extraction</span></p>
! 3044:
! 3045: <p class=MsoBodyText2>From these two types of student data which are stored
! 3046:
! 3047: by the LON-CAPA system, the features may be considered for classifying
! 3048:
! 3049: the students, are as follows: </p>
! 3050:
! 3051: <p> 1.<span style='font:7.0pt "Times New Roman"'>
! 3052:
! 3053: </span> Total number of correct answers. </p>
! 3054:
! 3055: <p> 2.<span style='font:7.0pt "Times New Roman"'>
! 3056:
! 3057: </span> Total number of tries for doing homework. </p>
! 3058:
! 3059: <p> 3.<span style='font:7.0pt "Times New Roman"'>
! 3060:
! 3061: </span> Time at which the student got the problem correct. Usually better
! 3062:
! 3063: students get the homework completed earlier.</p>
! 3064:
! 3065: <p> 4.<span style='font:7.0pt "Times New Roman"'>
! 3066:
! 3067: </span> Reading the material before attempting homework vs. attempting
! 3068:
! 3069: first and then read up on it.</p>
! 3070:
! 3071: <p> 5.<span style='font:7.0pt "Times New Roman"'>
! 3072:
! 3073: </span> Submitting a lot of attempts in a short amount of time without
! 3074:
! 3075: looking up material in between, vs. those giving it one try, reading
! 3076:
! 3077: up, submitting another one, etc.</p>
! 3078:
! 3079: <p> 6.<span style='font:7.0pt "Times New Roman"'>
! 3080:
! 3081: </span> Getting the problem right on the first try, vs. those with high
! 3082:
! 3083: number of tries.</p>
! 3084:
! 3085: <p> 7.<span style='font:7.0pt "Times New Roman"'>
! 3086:
! 3087: </span> Giving up on a problem versus students continuing trying up
! 3088:
! 3089: to the deadline.</p>
! 3090:
! 3091: <p> 8.<span style='font:7.0pt "Times New Roman"'>
! 3092:
! 3093: </span> Participating in the communication mechanisms, vs. those working
! 3094:
! 3095: alone.</p>
! 3096:
! 3097: <p><br>
! 3098:
! 3099: It might be interesting to group students with time of the first log
! 3100:
! 3101: on (beginning of assignment, middle of the week, last minute) and correlate
! 3102:
! 3103: this with the number of tries or number of solved problems. A student
! 3104:
! 3105: who gets all correct answers will not necessarily be in the successful
! 3106:
! 3107: group if they took an average of 5 tries per problem, but it should
! 3108:
! 3109: be verified from this research. </p>
! 3110:
! 3111: <p>We hope to find similar patterns of use in the data gathered from LON-CAPA,
! 3112:
! 3113: and eventually be able to make predictions as to the most-beneficial
! 3114:
! 3115: course of studies for each learner based on a limited number of variables
! 3116:
! 3117: for each individual student. Based on the current state of the learner
! 3118:
! 3119: in a learning sequence, the system could then make suggestions to the
! 3120:
! 3121: learner as to how to proceed. </p>
! 3122:
! 3123: </form>
! 3124:
! 3125: <br
! 3126:
! 3127: clear=ALL style='page-break-before:always;'>
! 3128:
! 3129: <div class=Section2> </div></div>
! 3130:
! 3131: <br clear=all>
! 3132:
! 3133: <hr align=left size=1 width="33%">
! 3134:
! 3135: <div id=ftn1>
! 3136:
! 3137: <p class=MsoFootnoteText><a href="#_ftnref1"
! 3138:
! 3139: name="_ftn1" title=""><span class=MsoFootnoteReference> [1] </span></a> If instructor
! 3140:
! 3141: is going to port the statistics table data to Excel, he/she can select
! 3142:
! 3143: the checkbox ÒOutput CSV formatÓ at top of the statistics table.</p>
! 3144:
! 3145: </div>
! 3146:
! 3147: <div id=ftn2>
! 3148:
! 3149: <p class=MsoFootnoteText><a href="#_ftnref2"
! 3150:
! 3151: name="_ftn2" title=""><span class=MsoFootnoteReference> [2] </span></a>
! 3152:
! 3153: This name has been got from administration office of Michigan State
! 3154:
! 3155: University for evaluating the examsÕ problem. Here we expanded this
! 3156:
! 3157: expression to homework problems as well.</p>
! 3158:
! 3159: </div></span></span></span></span></span>
! 3160:
! 3161:
! 3162:
! 3163: </body>
! 3164:
! 3165: </html>
! 3166:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to SessionTw2.html CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / doc / gutshtml