Physics Central is produced by the American Physical Society for the purpose of educating the world about physics. Physics Central is divided into four main sections; Discover, Explore, Ask & Experiment, and Physics Buzz. It is the Ask & Experiment section that is probably of most interest to teachers. In Ask & Experiment teachers will find coloring and activities books for students. Ask & Experiment also includes an “ask a physicist” section in which students can ask questions or find the answers to roughly 100 previously answered common questions such as “why do ice cubes sometimes stick to your skin?“

Applications for Education
If you’re looking for some good introductory materials for physics lessons, Physics Central would be a good place to start your search. In addition to the materials highlighted above, Physics Central also hosts podcasts about physics. You may also be interested in using some of the images from the Physics Central photo galleries to demonstrate or explain physics concepts.

Here are some related items that may be of interest to you:
10 Sources of Educational Science Games
Ten Problem Solving Games for K-8 Students
Physics Games for Your Blog or Website