Complete one of these challenges:

• Discovery Level – Work with friends to create the biggest or longest circuit you can. Share supplies as needed. Is there a limit to how many LEDs you can add? Is there a limit to how many alligator clips you can clip together? Why?

• Exploration Level – Based on your experiments with conductivity, what else could you use to replace the paper clips? Test a circuit that uses different conductors.

• Innovation Level – Design and test your own switch. Try using paper clips, brass brads, binder clips, aluminum foil, or other materials in your design. Want some ideas? Try “How to Use Switches.”

Note: Encourage campers to mount their creations by using tape on scrap cardboard as needed for structural support.