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In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.

Discover how a refracting telescope works by making one from scratch using common items. This telescope won't have a tube so the learner can see how an image is formed inside the telescope.

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 lab (Activity #1 on page), learners explore how we see color.