Optical Society
Optical Society of America: Optics for Kids: Lens Activity
An investigation into how lenses behave. Students explore using convex and concave lenses in various ways and record their observations. They are then are directed to another site to try activities where they can manipulate virtual lenses.
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.