Check out the following sites for your amusement:

http://school.discovery.com/

http://www.atlapedia.com/

http://www.beverlycleary.com/index.html

http://www.billnye.com/

http://www.congressforkids.net/

http://www.coolmath.com/

http://www.ecokids.ca/pub/index.cfm

http://www.nationalgeographic.com/kids/

http://www.nick.com

http://www.shelsilverstein.com