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Did you know that using a lens one can bend light to make pictures of the world? It's true!

With little more than a flashlight, a straw, and a plastic lid, make an observatory so you can see the amazing colors in bubbles.

Learners explore three-dimensional geometric frames including cubes and tetrahedrons, as they create bubble wands with pipe cleaners and drinking straws.

This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls.

In this hands-on botany activity, learners sprout vegetables in film canisters.

If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

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