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This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match.

In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu

In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.

Learners explore their surroundings while reasoning about categories and counting.

In this simple activity, learners investigate refraction by placing a picture of an arrow behind a glass of water.

This is an online game about stopping distance. Learners choose one of three vehicles and one of three speeds.