Project 2: Circuit & Switch


We’re going to build a basic switch to turn the power on and off in our circuit. A switch is a break in our circuit.

Build video for the Circuit & Switch project.


  • 9V Battery
  • Battery Clip Connector
  • LED
  • Play-Doh
  • 3 Alligator Clips
  • 2 Pieces Cardboard
  • Aluminum Foil
  • Glue Sick
  • Pencil
  • Sponge
  • Scissors
  • Rubber Band
  • Morse Code Guide
Materials for the circuit switch laid on a table


We’re going to create a circuit like the one used in Activity 1: Conductivity Test. To start, complete steps 1-8 of that activity. Stop when you have successfully lit up your LED.