White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
Smithsonian Institution's Site for Kids http://www.kidscastle.si.edu
Fun Brain http://www.funbrain.com
Kids Domain http://www.kidsdomain.com
Funology http://www.funology.com
Fun School http://www.funschool.com
Portaportal http://www.portaportal.com
Brainpop http://www.brainpop.com