I've Lost My Organs http://www.sciencenetlinks.com/interactives/systems.html
Cool Power Points for Kids! http://www.pppst.com/index.html
Human Body http://www.kidskonnect.com/content/view/337/27/
Interactive Human Body http://www.iknowthat.com/com/App?File=ScienceLab.htm&Type=S&SWF=humanbody%2Fscience_desk&App=Science+Lab&SkipGuestWarning=true
All About Animals http://webtech.kennesaw.edu/jcheek3/animals.htm
Earth Science from Space http://www.slideshare.net/coolpics/superb-pictures-of-the-earth-from-space/
More animals groups games http://www.kidscom.com/games/animal/animal.html
The Nine Planets - includes great "real-life" photographs from space http://kids.nineplanets.org/
Solar System games for kids & a fun song about the SUN! http://www.kidsastronomy.com/