If you don't know about Salman Kahn and the Kahn Academy here is your opportunity to learn more about him and his work in the TED video Salman Khan: Lets use video to reinvent education.
Towards the end Sal talks about "the notion of an emerging global one world classroom" (watch from 15:47 on). What a concept! Knowledge sharing, learning, peer to peer tutoring, coaching and mentoring on a global scale. Its early days but this has got to play a major role in the future of education.
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.