Start with 2 fifteen hole beams parallel to each other.
Place the 3 large thin plates on the beams and the two small thin plates in the back.
Place 2 one hole beams on front plate.
Place the 40 tooth gear on the 9V motor and then place the motor on the small thin plates.
Put axle through front beam and fifth from the back holes.
Place the 8 tooth gear on the rear axle so it fits snug with the 40 tooth.
Place wheels on axles.
Place three bushes on the axles.
Place the 3 brackets like this to hold the battery.
Connect the battery to the connector and then connect it to the motor.