You have all this education theory, and people try to make larger statements than maybe what their data would back up, because they've done these small experiments that are tied to a very particular case with a very particular implementation... theory definitely matters, but I think dogma matters less.

I'm the 'Dear Abby' of math problems. But if you understand something, shouldn't you be able to explain it? Isn't that the whole point?

I'm starting a virtual school for the world, teaching things the way I wanted to be taught.

Sal Khan Quotes