I'm really excited that Khan Academy is offering Electrical engineering, but after going through the introduction and starting on the circuit analysis section, I finally realized what's missing: Why are there no practice problems? I know the course hasn't really started on any math (yet) and moreover you're supposed to know the calculus already, but there are other things practice problems help with drilling: terminology and symbols. I know I can drill these things myself with flash cards, but the whole reason I love Khan Academy is that it works so much better for me than flash cards, and I'm so much more excited to do work because of the way Khan gamifies learning (and I'm a big gamer, so gamification works on me like gangbusters).

If the original designer of that material doesn't want to write practice questions, is there any way we in the community can volunteer questions with answers that could be programmed in? Or heck, I'm taking programming too, is there any way you can give a sample of the backend so that we can write up the full script and donate it to khan?