Each group needs:

• battery(ies): 9 volt, D-cell, AA, etc.
• 4 wheels or disks (wheels must be firmly fastened to axle or the body of the vehicle, but must be able to rotate freely)
• 2 axles (that is, plastic, metal, wooden dowel rod or like material)
• 2-3 alligator clip wires
• electric, DC powered motor (at least one): 1.5V- 9V
• driving gear (to fit axle) and gears for motor, or one sewing spool (to fit axle) rubber-band.

Vehicle Body:

• sturdy cardboard, wood, Styrofoam, or plastic

To share with the entire class:

• double-sided tape
• electrical and/or regular tape
• glue gun(s) with glue sticks
• rulers
• construction paper
• markers
• scissors
• computer with Internet access and classroom projector, for a teacher demo
• a toy car or a constructed model, for a teacher demo

For the teacher 's lemon demo:

• 1-2 lemons,
• 2 copper wires
• 2 zinc wires
• 1 small LED. bulb
• 3 alligator clip wires