Difference between revisions of "FormattingCorrectAnswers: Equations"

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(New page: There are a number of ways to effect the way the correct answer is displayed to the student. The interaction between eval() , substitute() , reduceConstants , reduceConstantFunctions ....)
 
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There are a number of ways to effect the way the correct answer is displayed to the student. The interaction between eval() , substitute() , reduceConstants , reduceConstantFunctions .
  
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<h2>Your title here: PG Code Snippet</h2>
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Note:[[PGLabs]] is an efficient way to check code.
  
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<!-- Header for these sections -- no modification needed -->
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<p style="background-color:#eeeeee;border:black solid 1px;padding:3px;">
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<em>This code snippet shows the essential PG code to check student answers that are equations. Note that these are <b>insertions</b>, not a complete PG file. This code will have to be incorporated into the problem file on which you are working.</em>
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</p>
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<p style="text-align:center;">
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[[IndexOfProblemTechniques|Problem Techniques Index]]
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</p>
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<table cellspacing="0" cellpadding="2" border="0">
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<tr valign="top">
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<th> PG problem file </th>
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<th> Explanation </th>
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</tr>
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<!-- Load specialized macro files section -->
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<tr valign="top">
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<td style="background-color:#ddffdd;border:black 1px dashed;">
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<pre>
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loadMacros("any macros files that are needed");
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</pre>
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</td>
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<td style="background-color:#ccffcc;padding:7px;">
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<p>
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To do ..(what you are doing)........., we don't have to change the
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tagging and documentation section of the problem file.
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In the initialization section, we need to include the macros file <code>-------.pl</code>.
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</p>
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</td>
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</tr>
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<!-- Setup section -->
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<tr valign="top">
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<td style="background-color:#ffffdd;border:black 1px dashed;">
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<pre>
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Context(".....");
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Define context and variables for the questions
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$expr = Formula("....");
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</pre>
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</td>
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<td style="background-color:#ffffcc;padding:7px;">
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<p>
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In the problem set-up section of the file, we specify that the Context should be <code>......</code>, and define the answer to be a formula.
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</p>
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<p>
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Notes: on using this and related Contexts.
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</p>
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</td>
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</tr>
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<!-- Question text section -->
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<tr valign="top">
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<td style="background-color:#ffdddd;border:black 1px dashed;">
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<pre>
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BEGIN_TEXT
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...... question text ......
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END_TEXT
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</pre>
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<td style="background-color:#ffcccc;padding:7px;">
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<p>
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The problem text section of the file is as we'd expect.
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</p>
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</td>
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</tr>
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<!-- Answer section -->
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<tr valign="top">
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<td style="background-color:#eeddff;border:black 1px dashed;">
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<pre>
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ANS( $expr->cmp() );
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</pre>
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<td style="background-color:#eeccff;padding:7px;">
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<p>
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As is the answer.
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</p>
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</td>
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</tr>
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</table>
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<p style="text-align:center;">
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[[IndexOfProblemTechniques|Problem Techniques Index]]
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</p>
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[[Category:Problem Techniques]]

Revision as of 09:34, 17 June 2008

Your title here: PG Code Snippet


This code snippet shows the essential PG code to check student answers that are equations. Note that these are insertions, not a complete PG file. This code will have to be incorporated into the problem file on which you are working.

Problem Techniques Index

PG problem file Explanation 
  loadMacros("any macros files that are needed");

To do ..(what you are doing)........., we don't have to change the tagging and documentation section of the problem file. In the initialization section, we need to include the macros file -------.pl. 

  Context(".....");
  Define context and  variables for the questions

  $expr = Formula("....");

In the problem set-up section of the file, we specify that the Context should be ......, and define the answer to be a formula.

Notes: on using this and related Contexts. 

  BEGIN_TEXT
  ...... question text ......
  END_TEXT

The problem text section of the file is as we'd expect. 

  ANS( $expr->cmp() );

As is the answer.

Problem Techniques Index

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