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No Big Deal. He's Just Trying To Educate The Whole World. For Free.

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Sal Khan was tutoring his cousins and wanted to share his knowledge more widely, so he started recording his lessons. Now he’s reaching millions with free classes on just about anything.

Read more: http://upworthy.com/no-big-deal-hes-just-trying-to-educate-the-whole-world-for-free-111

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