For a research project I've decided to look at the merits of teaching through video compared to teaching through the medium of a lecture. This lead me to Khan Academy, a website launched in 2006 with the purpose of teaching the masses for free using video.
Whilst I personally love the concept and think its a brilliant idea, I am yet to find ANY evidence on how effective Khan's solution is compared to more traditional teaching.
Maybe I am missing something obvious, but my question is:
- Is there any evidence supporting Khan's (and others like his) concept?