This wiki is a collaborative project for Science teachers to share resources and anecdotes about what has worked and what hasn't in their classroom. Please read at your leisure and join the wiki to post comments and participate in discussions.
Anything from NASA will be slick. I'm a little disappointed in the videos about proportion. A 2 minute video and the mathematics is washed over in 13 seconds, and on top of that it's all procedural in nature (cross-multiply) with no explanation as to why it works. Other resources look more promising to me, but hope NASA looks into doing a better job of incorporating more conceptual development/understanding/explanation.