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Continuing its evolution from quirky disruptor of traditional classroom learning to mainstream player aligned with the education establishment, the nonprofit Khan Academy recently unveiled new online ...

(CBS News) Sal Khan is a math, science, and history teacher to millions of students, yet none have ever seen his face. Khan is the voice and brains behind Khan Academy, a free online tutoring site ...

Watching videos online usually means goofing off. But over the past few years, millions of decidedly enterprising people have turned on their computers to watch, of all things, math and science ...