http://library.thinkquest.org/11771/
http://sln.fi.edu/
http://www.ars.usda.gov/is/kids/
http://www.exploratorium.edu/
http://www.hhmi.org/coolscience/
http://www.m-crossroads.org/orpheum/
http://www.redrival.com/craftykid/science/index.shtml
http://www.scienceclubkids.com/
http://www.sciencefriday.com/
http://www.sciencemadesimple.com/
http://www.sciencemadesimple.com/what.html
http://www.sciencespiders.com/
http://www.sdahq.org/new1198/kids/bubbles/Welcome.html