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By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity, learners trap a thin layer of air between two pieces of Plexiglas to produce rainbow-colored interference patterns.

In this activity, learners discover how sediment is affected in an oil spill. Learners investigate the differences between heavy and light oil as well as the differences between different sediments.

Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!

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 exploring color and color mixing.

Why should we wear masks? Do masks work? Do some masks work better than others? Learners find out in this activity.

In this activity (1st activity on the page), learners explore their sense of taste and the structure of the tongue by taste-testing various foods.

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

Many people get water from a source deep underground, called groundwater.

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