This is incredible stuff the Khan team has created!! Thank you!! Just watched a recent TED you did as well. Flipped IS the way to go right now - and likely for the future (I hope).
It is a bit difficult, however, for each Canadian educator to sift through the classroom content since the order is set for American curriculum. The math is the obviously Universal, but the order with which it is offered is different.
Is there any plan to streamline this for your Canadian friends? Please let me know and I'll pass it on!
Thanks so much for all you are doing for education!!!