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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.

Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

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

In this outdoor activity, learners discover how the environment around a building affects the growth of plants.