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This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.

This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls.

In this activity, learners will create their own simple shadow puppets, and experiment with light and shadow while playing with them.

In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

In this activity, learners will explore light with reflective surfaces. Learners will make predictions and share their observations as they experiment with directing a beam of light.

Did you know that using a lens one can bend light to make pictures of the world? It's true!

This is an activity about turbidity, or the amount of sediment suspended in water.