Free science and math simulations

I ran across this site from the University of Colorado containing interactive simulations. It's difficult to find good examples of technology integration in some subjects and at some grade levels. This site provides some good simulations for physics, chemistry, biology and mathematics.

There are over 400 teacher contributions of lessons related to these simulations. Though you may not be able to attend their workshops, it appears that a good bit of the material used at these workshops is shared on their site. The workshop content I scanned went into some discussion on how best to use a particular simulation and how the proper introduction of a simulation can make significant differences in how it's used for learning.

This looks to be quite appealing for teachers in these particular content areas. As a general rule, we get pretty bothered when the kids are playing games on the computers instead of learning. Some of these simulations are so open-ended that they could be constructed as an effective learning "game".

Seriously, am I the only one that can't resist shooting a Buick out of a cannon?