Difference between revisions of "AnswerHints"
| Line 78: | Line 78: | ||
Context()->normalStrings; |
Context()->normalStrings; |
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| + | Context()->texStrings; |
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HINT(EV3(<<'END_HINT')); |
HINT(EV3(<<'END_HINT')); |
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Substitute \( 3u \) wherever you see \( t \) in the |
Substitute \( 3u \) wherever you see \( t \) in the |
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| − | formula for \( f \). |
+ | formula for \( f(t) = $f \). |
END_HINT |
END_HINT |
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| + | Context()->normalStrings; |
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</pre> |
</pre> |
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<td style="background-color:#ffcccc;padding:7px;"> |
<td style="background-color:#ffcccc;padding:7px;"> |
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<p> |
<p> |
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<b>Main Text:</b> |
<b>Main Text:</b> |
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| − | We include a general answer hint in the block of text between the commands <code>HINT(EV3(<<'END_HINT'));</code> and <code>END_HINT</code>, which must be on their own lines and at the start of a line. The hint will automatically generate the word <b>HINT:</b> before the block of text that is the hint, so you don't need to add it manually. |
+ | We include a general answer hint in the block of text between the commands <code>HINT(EV3(<<'END_HINT'));</code> and <code>END_HINT</code>, which must be on their own lines and at the start of a line. The hint will automatically generate the word <b>HINT:</b> before the block of text that is the hint, so you don't need to add it manually. The modification of strings from <code>texStrings</code> and back to <code>normalStrings</code> ensures that MathObjects (formulas, etc.) will be beautifully typset. |
</p> |
</p> |
||
</td> |
</td> |
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Revision as of 22:24, 8 February 2010
Answer Hints
This PG code shows how to include two different kinds of answer hints:
- General answer hints that help students get started on a problem and are made available after a student has submitted an answer at least once (a "Show hints" checkbox appears near the "Submit Answers" button).
- Specific, customized answer hints that appear in the answer feedback messages box after a student submits a particular answer that activates a pre-programmed hint.
You may also be interested in ErrorMessageCustomization
| PG problem file | Explanation |
|---|---|
DOCUMENT(); loadMacros( "PGstandard.pl", "MathObjects.pl", "answerHints.pl", ); TEXT(beginproblem()); |
Initialization:
We need to include the macros file |
Context("Numeric");
Context()->variables->are(t=>"Real",u=>"Real");
$f = Formula("2 t");
$answer = Formula("6 u");
|
Setup:
We restrict the variables to |
Context()->texStrings;
BEGIN_TEXT
If \( f(t) = $f \), then \( f(3u) \) = \{ ans_rule(10) \}
END_TEXT
Context()->normalStrings;
Context()->texStrings;
HINT(EV3(<<'END_HINT'));
Substitute \( 3u \) wherever you see \( t \) in the
formula for \( f(t) = $f \).
END_HINT
Context()->normalStrings;
|
Main Text:
We include a general answer hint in the block of text between the commands |
$showPartialCorrectAnswers = 1;
ANS($answer->cmp()
->withPostFilter(AnswerHints(
Formula("6 t") => "Are you using the correct variable?",
Formula("6 u") => "Good work!",
))
);
|
Answer Evaluation:
To generate specific, customized answer hints for particular answers, we use the |
- POD documentation: answerHints.pl
- PG macro code: answerHints.pl
