http://christopherdanielson.wordpress.com/2013/08/01/open-letter-to-sal-khan/
I think there are two things I like about this post: One, it's critical without being spiteful, and two, the advice it offers is relevant to anyone wanting to be a better math teacher, not just Sal Khan.
I think there are two things I like about this post: One, it's critical without being spiteful, and two, the advice it offers is relevant to anyone wanting to be a better math teacher, not just Sal Khan.