During the course of tutoring his young cousins in math, former hedge fund analyst Salman Khan began posting instructional videos on YouTube in 2004. He has subsequently created an online repository of thousands of videos. In this TED Conference presentation:
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 “homework” in the classroom with the teacher available to help.