Shodor Interactivate

The Shodor Education Foundation has as its mission: "To advance science and math education through the use of computational science, modeling and technology." At this site, Shodor's Project Interactivate offers Java-based activities for the exploration of science and math. From the opening page, click to lessons and tips for teachers or to activities, tools, and a dictionary for students. Each activity offers answers to its "What, how, and why," so you can have the fun of interactive math games and also understand the concepts behind them. Activities are grouped for grades 3-5 or 6-8 and arranged by NCTM standards. They cover topics from elapsed time to estimation to Julia sets. Uses Java.