Opportunity
An opportunity is the first chance on a step for a student to demonstrate whether he or she has learned the associated knowledge component.
An opportunity is both a test of whether a student knows a knowledge component and a chance for the student to learn it. While students may make multiple attempts at a step or request hints from a tutor (these are transactions), the whole set of transactions associated are considered a single opportunity. As a student works through steps in problems, they will have multiple opportunities to apply a knowledge component.