Checks user input from the expression widget to see if it is scorable.
Note: Most of the expression widget's validation requires the Rubric because of its use of KhanAnswerTypes as a core part of scoring.
scoreExpression() for more details.
scoreExpression()
Checks user input from the expression widget to see if it is scorable.
Note: Most of the expression widget's validation requires the Rubric because of its use of KhanAnswerTypes as a core part of scoring.