Circuit Builder

Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. Examine series and parallel circuits, conductors and insulators, and the effects of battery voltage. Thousands of different circuits can be built with this Gizmo.

  Launch Gizmo


  • Determine how to light a lightbulb with a battery and wires.
  • Classify materials as conductors or insulators.
  • Compare the properties of series circuits and parallel circuits.
  • Observe the effect of voltage on current.
  • Explain how a fuse can prevent short circuits.
  • circuit, closed circuit, conductor, current, fuse, insulator, open circuit, parallel circuit, series circuit, short circuit