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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.

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!

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

Light painting is a creative activity that involves creating striking images and illusions using a camera, a light source, and a little practice.