Brushbots are a rare animal that live only on a small island in the Chesapeake Bay. Unfortunately, a big factory has been built near the Chesapeake and is polluting the whole ecosystem! The Brushbot's habitat is ruined and it is up to you and your team of engineers to build a temporary home for the Brushbots to live in until we can clean up their island!

Engineering Relations:

  • Designing for a consumer
  • What are the needs for the consumer
  • Architectural Engineering
  • How can you build a stable and functional home for the brushbot?
  • Electrical Engineering
  • How do the brushbots work?
  • How do they move?


  • Build your own brushbot!
  • Cut heads off of the toothbrush.
  • Use the wire stripper to expose about 1/4ÔÇ│ of wire on each of the leads coming from the motor.
  • Attach the wires from the motor to the front of the cell battery
  • Apply motor to toothbrush.
  • Experiment with the placement of the motor.
  • Attach the second wire to the opposite side of the battery. Note that at this point the motor will start spinning.
  • Put it down and watch it spin!


  • Use the materials to make a house for the brushbot!