Sal Khan interviews Davis Guggenheim, director of TEACH and Waiting for Superman: https://t.co/03Zx0RT71j
— Frank Noschese (@fnoschese) September 6, 2013
via Twitter https://twitter.com/fnoschese
September 06, 2013 at 04:29PM
Sal Khan interviews Davis Guggenheim, director of TEACH and Waiting for Superman: https://t.co/03Zx0RT71j
— Frank Noschese (@fnoschese) September 6, 2013
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