Salman Khan, of Khan Academy, builds videos which kids can learn from. They're about adding, subtracting, algebra, calculus, history, and more. His first idea was just to post helpful videos for his cousins. Then, thousands of others kids and teachers started using his videos. Realizing the energy behind them he kept developing content, but also wisely started to build an infrastructure that could enhance how students use the videos.
The data sets he shows are pretty powerful. I do think we have to be careful about data. Jonathan Martin at NEIT2010 did a great job of talking about being data informing, not replacing, judgement.
I think his ideas around using game mechanics are incredible. I have been to so many talks about gaming for education where finding the right balance between play and education has been the discussion. Someone on a panel I was at said 70% play, 30% game. That seems like the oddest approach, and I think Khan's merit badges and other structures are a much better look at ed tools might use gaming structures.
Khan Academy is exciting stuff, and some of my teachers have been engaged in producing their own videos. We're going to see there "the flip" might take our students.