read about light and click for demonstrations
Mix and Match - Try to match colors by mixing light
Mix and Match (#4 on worksheet)
Afterimage experiment - try it and read the explanation
Bird in a cage (#5 on worksheet)
Try these optical illusion(requires Shockwave)
Optical Illustions from exploratorium.edu (#6 on worksheet)
Test yourself for color blindness
Describes properties of light and has cool interactive demonstrations
Optics for Kids
Science for Kids
You Tube video about light, written for 5th-grade
Lenses - convex and concave
It's really for older kids, maybe middle school, but there are examples and
explanations that a 5th grader can understand
Optics 4 Kids
The Franklin Institute's website
Color and light - you can control the angles and see how prisms and lenses
Writing is for high school or adults, but animations are cool.
Learn about light from a high school physics site!
How much can you understand?
Try the links to "refraction at a boundary" and the "archer fish"
Ontario Science center game - Computer crayons
lesson about lenses with a cool experiment