[tjl]

I hope that their math section is better than some of their engineering courses. See the critique at,

http://www.leancrew.com/all-this/2012/12/khan/

I've also been involved in teaching similar material as Dr. Drang and agree completely with his critique.

I've come across students who've had similar sloppy teaching and had to re-teach material so they could unlearn what they'd learnt and get a proper foundation for moving forward. Consistently, they would have very poor assignments for the first few weeks until they had that foundation.