www.exploratorium.edu
see stem cells, see scientific data about climate change, study the science of various sports
http://kidshealth.org/kid
dealing with feelings, understanding your body, common illnesses, and games, all designed in a kid friendly site
www.cellsalive.com/index.htm
view amazing photos of cells, cell cams which allow you to see a cell over a 24-hour period of time, cell division and interactive views of cell stages
www.sciencetoymaker.org
this site has several cute ideas and instructions on how to make science related activities
www.windows.ucar.edu
study our planet, our solar system, the universe and climate; scientific calendar with important dates and games and puzzles, life science, geology and physics information