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Page last updated at 07:22 GMT, Tuesday, 26 June 2012 08:22 UK

Khan Academy reinvents distance education


Your child's education is a universal cause of anxiety for almost every parent.

In many countries, school systems are underfunded and over-enrolled while teachers have too much material to cover in too little time.

But one Silicon Valley entrepreneur has developed a teaching method that completely rewrites the basic principles as Sumi Das finds out.

READ MORE: Salman Khan: From closet to classroom

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