David Harrison at The University of Toronto’s School of Physics has a wonderful collection of physics animations. Many of them are interactive, and some allow the viewer to make predictions before the animation plays.
Now, I have to be honest. I made it through physics because the top three students in my graduating class (wonderfully kind ladies) befriended me my senior year of high school. I remember little about the class except my teacher insisting that “1 and 1 makes three.” Needless to say, physics is not my strong suit, but I enjoyed playing with these animations. I found myself testing what would happen with this change or that one.
Let me know if you can use these in your classroom. I’m trying to dig up more science and math resources, but these subjects are not my ex-per-tise.