his site, which features Flash-based games starring Peep and his friends, entices three-to-five-year-old to explore science. While kids may be having too much fun to realize it, these games will help them learn to estimate distances, mix colors, exercise their memory, and explore basic physics. The site also includes a collection of science resources. You’ll need the free Flash player. 

http://www.peepandthebigwideworld.com/