Just today I used Kahn Academy in what the article seems to consider the "intended" way. My wife's sister is in high school, taking chemistry this year. From t

Just today I used Kahn Academy in what the article seems to consider the "intended" way. My wife's sister is in high school, taking chemistry this year. From time to time she'll get stuck on something, and I'll tutor her a bit. Earlier today she called and asked if I could help her out with "kinetics." I told her to go to Kahn Academy, watch the intro to kinetics video, and that I'd stop by on my way home from work. Later on, I stopped by and we went through a few pages of exercises together. There obviously were still a few gaps in her understanding, but all the basic hurdles (terminology, etc) were out of the way. We were able to just work on a handful of sticking points. KA is great for handling the "busy work" of teaching.