Web 3D

This morning on my blog I posted an entry considering the relationship between what Grant Wiggins has labeled "Understanding by Design" "Differentiated Instruction" and Web 2.0. While writing this entry I started thinking about the role of sims in different ways than I had before. I'd love to find a list of sims that are free, easy to download, and high quality for educational purposes. Imagine how easy it would be to engage kinestenthic learners in their learning activities through virtual simulations. I'd appreciate any suggestions that readers might have as to useful sims. If a list does not exsit, I'd be happy to develop one with people's help.