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Помощен център
Общност
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Как да помогнем?
Помощен център на Кан Академия
Teachers & coaches
Making assignments and Mastery goals for your students
Understanding the Khan Academy mastery system
Understanding the Khan Academy mastery system
How do Khan Academy's Mastery levels work?
Which courses have mastery enabled?
Why Mastery Learning, by Sal Khan
What is self-paced Mastery?
What are Mastery Challenges in course mastery?