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 \label{String_Response_Problems}  \label{String_Response_Problems}
   
 \textbf{\index{String Response}String Response} problems are problems in  \textbf{\index{String Response}String Response} problems allow the student to submit a string of characters for the answer. Examples
 which the student submits a string of characters for the answer. Examples  of String Response questions are vocabulary tests, short answers and chemical formulas.
 of string response questions are vocabulary tests, short answer and entering  
 chemical formulas.  
   
 Note that it is easy to abuse String Response problems. For instance, consider  Note that it is easy to abuse String Response problems. For instance, consider
 the question {}``Who wrote 'Huckleberry Finn'?'' If you tell the system  the question {}``Who wrote 'Huckleberry Finn'?'' If you tell the system
 the answer is {}``Mark Twain'', and a student answers {}``Twain'', the  the answer is {}``Mark Twain'', and a student answers {}``Twain'', the
 system will mark it wrong. If they answer {}``Samuel Clements'', then the  system will mark it wrong. If they answer {}``Samuel Clemens'', then the
 student will definitely get it wrong. There is some room for flexibility  student will definitely get it wrong. There is some room for flexibility
 in the string processing, but it can be difficult to get it all right. Before  in the string processing, but it can be difficult to get it all correct. Before
 you use a String Response problem, be sure you can easily characterize correct  you use a String Response problem, be sure you can easily characterize correct
 answers.  answers.
   
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