Some+fun+science+sites 

KineticCity.com
 * Sign up for a free account by clicking on the orange exclamation point near the log in prompt. Collect points and badges as you play!
 * play games, conduct experiments, see labs (unfortunately, it uses flash, so a computer is needed for this)

National Video Game Making Challenge
 * create your own video game using the toolkits from this site. If you make one you are proud of, submit it to the Game Day Challenge.

Science Project Ideas
 * more Project ideas than you can imagine. Choose one to try on your own or in the classroom!

Seriously Amazing
 * smithsonian site that answers all sorts of wild and wacky questions

Sparticl search engine
 * a search engine that brings the best of school appropriate articles, videos, dictionary definitions and more to you

National Geographic
 * national geographic home page that links to videos, pictures and articles of all kinds

PBS.org
 * public broadcasting links so great videos and articles

Scientific Explorer blog