21 oct 2016
KHAN
TED 's TALK about KHAN Academy
Estudiantes, Talk, Khan, Educa
https://www.khanacademy.org/talks-and-interviews/conversations-with-sal/v/lets-teach-for-mastery-not-test-scores-sal-khan?utm_source=Sailthru&utm_medium=email&utm_campaign=Sal%27s%20latest%20TED%20talk%20final%20version&utm_term=All%20Users
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