By cutting two “lips” into the flattened end of a soda straw and blowing with just the right pressure, you can make sounds resonate in the straw.

Rub a balloon on your head, then watch a soda can race across the floor or a table. As you observe the interplay between electrons and protons, you’ll also discover why clothes cling together in a dryer.

Create your own personal sound system with a coat hanger and a string, producing musical sounds that only you can hear

Experiment with cardboard tubes of different lengths to see how far you can blow a marshmallow.

Trace your shadow, then watch it change. Go outside and trace an outline of your shadow. Wait a while, try again, and watch how your shadow changes over time.

Build a paper-pencil-pin phonograph. In this classic activity, make a record player out of simple materials and listen to your favorite vinyl LP—no outlet required.

Two hinged mirrors create a kaleidoscope that shows multiple images of an object. When you set the hinged mirrors on top of a third mirror, you create a reflector that always sends light back in the direction from which it came.

Have a ball experimenting with a frozen water balloon—and learn about water chemistry, phase changes, and density.

Changes in fluid pressure affect the buoyancy of a Cartesian diver made from a condiment packet. The diver floats, sinks, or hovers in response to pressure changes.

"Cold" metal and "warm" wood may be the same temperature.

To see or not to see.

Create giant bubbles!