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Khan Academy

In Read, Watch on June 28, 2010 at 10:54 am

Sal Khan has taped over 1,500 mini-lectures available for free on YouTube.  The lectures are heavy on math and science, and he’s posting new ones all the time.  PhysOrg asked Khan about his motivation:

Valedictorian of his high school class, with a perfect math SAT score, he always regretted the way educators failed to show the beauty of what they taught.

Khan Academy

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