Salman Khan talks about how and why he created the remarkable Khan Academy, a carefully structured series of educational videos offering complete curricula in math and, now, other subjects. He shows the power of interactive exercises — and calls for teachers to consider flipping the traditional classroom script — give students video lectures to watch at home, and do you “homework” in the classroom with the teacher available to help. (Recorded at TED2011, March 2011, in Long Beach, California. Duration: 20:27)

Watch Salman Khan’s talk on TED.com where you can download it, rate it, comment on it and find other talks and performances from our archive of 800+ TEDTalks.