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In this activity, learners use their strength to light a light bulb. A chain made from paper clips is placed in series with a battery and flashlight bulb.

In this activity, learners discover what happens when they crush wintergreen-flavored candies in a very dark room.

Learners test solutions of water, sugar, salt, and hydrochloric acid for electrical conductivity. They immerse leads from a lighting device (a battery pack connected to an LED) into each solution.

Make two firefly lanterns, then program them to blink to one another and change colors.

Learners observe two joined glass tubes containing a conductive salt solution. Electrodes are passing an electric current through the water.

In this activity about the solar system, learners use various light sources to examine ice with different components to understand how NASA studies planets and moons from space.