Education 4 Kids http://www.edu4kids.com/index.php?page=16
Entomology for Beginners http://www.bijlmakers.com/entomology/begin.htm
Basic Science for Kids http://www.sciencemadesimple.com/
Molecular Expressions: Science http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.html
The National Geographic for Kids http://www.nationalgeographic.com/kids/
Scientific Dictionary: EnchantedLearning.com http://www.EnchantedLearning.com/science/dictionary/
Nye Labs http://nyelabs.com/core.html
Space Telescope Science Institute http://oposite.stsci.edu/
The Franklin Institute Online http://sln.fi.edu/