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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 construct three optical illusion toys to examine how our brains play tricks on what we see.

In this activity, learners explore the gait of horses by constructing flipbooks with British photographer Eadweard Muybridge's famous photographs.

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