Astronomy Simulations

http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::800::600::/sites/dl/free/0072482621/78778/Lunar_Nav.swf::Lunar%20Phases%20Interactive

This interactive by McGraw Hill helps illustrate the concept of seasons by providing users with a series of tools to manipulate and observe this cycle. Change the Earth's inclination, the speed in which it travels, and how seasons would both feel and appear if our inclination was set to that of other planets. There's also great background information available here as well.

Mark Hannah, Tech & Learning, April 15th, 2008

More Great interactive simulations can be found at Astronomy Interactives.