AnswerHints
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 |
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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 If the same error message should be given for several different answers, you should make a square bracketed list of those answers. For example, if the variables x, t, and u were all in the context, we could use ANS($answer->cmp() ->withPostFilter(AnswerHints( [Compute("6 t"),Compute("6 x")] => "Are you using the correct variable?", )) );
If the MathObjects answer evaluator normally generates a message, the default is not to change a message that is already in place. To override a message generated by a MathObjects answer evaluator, you should set ANS($answer->cmp() ->withPostFilter(AnswerHints( Compute("6 u") => ["Good work!",replaceMessage=>1], )) ); |
- POD documentation: answerHints.pl
- PG macro code: answerHints.pl
- POD documentation: problemPanic.pl.html
- PG macro code: problemPanic.pl