Exploratorium
Exploratorium: Science Snacks: Physics/light
Here is a large collection of simple science class activities for understanding the physics of light.
Center of Science and Industry
Cosi Columbus: Bent Toward Science Refraction
Learn about refraction in this hands-on science experiment. Includes full list of materials, procedures, and scientific explanation of what happens when light moves from one material to another.
Optical Society
Optical Society of America: Optics for Kids: Make Money Appear Before Your Eyes
A simple experiment that clearly demonstrates how light bends when it passes through water. Accompanied by a good explanation of what's happening, and a link to an article on refraction.
Optical Society
Optical Society of America: Optics for Kids: Lose a Glass in a Glass
This is an activity that should only be done outdoors or in a well-ventilated area, with adult supervision, as it involves paint thinner. It demonstrates the concept of the index of refraction for different materials, in this case that...
Ducksters
Ducksters: Physics for Kids: Light
Kids learn about the science of light. Energy made of waves and particles called photons traveling at the top speed in the universe. What is refraction? The difference between transparent, translucent, and opaque.
Optical Society
Optical Society of America: Optics for Kids: Interference in a Ripple Tank
An investigation, using a ripple tank, into how waves behave when they collide with each other. With an explanation of what is observed, and a link to an article on refraction.
Optical Society
Optical Society of America: Optics for Kids: Total Internal Reflection
An investigation into the total internal reflection of light, using a laser pointer. Accompanied by an explanation of what's happening, a discussion of Snell's Law, and links to additional information.
Optical Society
Optical Society of America: Optics for Kids: Watch Tv Upside Down
An experiment to invert a television image using a magnifying lens. Accompanied by an explanation of what's happening.