The Exploratorium

In this activity related to magnetism and electricity, learners discover that a magnet falls more slowly through a metallic tube than it does through a nonmetallic tube.

In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

In this quick optics activity, learners use a dim point of light (a disassembled Mini MagLite and dowel set-up) to cast a shadow of the blood supply in their retina onto the retina itself.

In this activity about light and refraction, learners make a lens and magnifying glass by filling a bowl with water.

Did you know that a Slinky makes a handy model of earthquake waves?

Before there were clocks, people used shadows to tell time. In this outdoor activity, learners will discover how to tell time using only a compass, a pencil, a handy printout, and a sunny day.

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

Like water drops in falling rain, a CD separates white light into all the colors that make it up.

In this activity, learners explore how ordinary marshmallows expand when heated in a microwave.

Walk a toy to the edge of its doom, maybe it'll fall off the edge of a table, but it will safely stop right before falling.