NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
KidsKonnect-for all ages http://www.kidskonnect.com
Highlights Magazine on-line http://www.highlightskids.com
Excellent source of information for students and parents-free. http://www.thinkfinity.org
Fun site to make your own comics. We played with this in class. http://www.makebeliefscomix.com
Try it! http://blabberize.com
This creates "word clouds" from text you provide. http://www.wordle.net
Free photo service -add speech bubbles to your photos. http://speechable.com