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Why I think the Khan Academy works so well:

1/. Videos are short, 10-15min digestible bits. Long enough to teach a concept, short enough not to lose my attention.

2/. He's a huge advocate of teaching intuition behind concepts instead of memorization. This makes learning less stuffy and more informal.

3/. Everyone has "holes" in their knowledge, but they are in different areas. Schools have a hard time to individually address weak points in each student's knowledge (particularly if you should have learned them in a prerequisite course). Videos organized by concepts allow you to address these weaknesses systematically.

4/. He makes mistakes! Those mistakes are quite insightful and give a glimpse into an art of solving problems that usually isn't presented in most lectures. You usually see a problem, and a solution thats a finished product.

5/. He doesn't have an ego. He's not breathing down your neck or thinking you're an idiot if you don't understand anything the first time. You can pause, google something, repeat, watch it anytime, etc.



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