While students are working on practice, there is always a mastery bar present at the top of their screen, which fills to represent their current mastery score (along a 0-100 scale) and denotes threshold goals of 70 for proficiency (a Star) and 100 for complete mastery (an episode-specific icon at the far right). At any point, students can also review their work, and in addition to seeing a full question history there is also a graph that shows how their mastery score has changed over time.

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