Optics for Kids from Optical Research Associates
Starlight Starbright from NASA
Refraction
How stuff Works: LIGHT
Colour Vision Tests
Free Optics Textbook
Optical Illusions
Lenses and Optical Instruments - The Fun Science Gallery
Junior Rockhound
Rocks, Minerals and Gems Galleries
Potteries Museum Art Gallery
Geological Society of America
Rock Links from Internet Scout
Rocks for Kids.com
Sound is...
Sounds from the Orchestra
SOUND from Bethune Academy
Sample Sounds
The Physics of Sound (high level)
Frogland
On-line Field Guides
"Food Chains" from "Arcytech"
Habitats Unit
