Search Results

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

This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

In this activity, learners make a photographic image—without a camera!

In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.