Khan Academy is a site that hosts thousands of lectures in topics from physics to finance. They're divvied up into videos that are anywhere from 3 to 15 minutes long. It's a far cry from a typical ...
From a tiny closet in Mountain View, Sal Khan is educating the globe for free. His 1,516 videotaped mini-lectures — on topics ranging from simple addition to vector calculus and Napoleonic campaigns — ...
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