by TERRY MORAN, ABC News
Online learning on steroids, Khan Academy is a one-world schoolhouse that teaches thousands of free lessons on everything from algebra to medieval history to the fiscal cliff through YouTube. It is skyrocketing in popularity, sparking controversy and fundamentally challenging the very notion of education in the 21st century. “What we’re tackling right now is the learning side,” said founder Sal Khan. “How can we democratize the knowledge so that anyone can get to the level they want to.”
http://abcnews.go.com/Business/khan-academy-taking-learning-pace-fits-classroom/story?id=18123195
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