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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.

In this hands-on activity, learners build their own kaleidoscopes and explore how light can reflect of off surfaces such as mirrors, to produce beautiful patterns.

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

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

In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.