FactoringAndExpanding

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");	Initialization: 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("....");	Setup: 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	Main Text: The problem text section of the file is as we'd expect.
ANS( $expr->cmp() );	Answer Evaluation: As is the answer.

Problem Techniques Index