Build this motorised marble run and learn some basic laws of motion. Place the marbles at the top of the circuit and watch them race to the finish, until it starts again and again!

Includes:Base, spiral track, back plate, turning wheel, front plate, motor, track connector, motor cover, track lock, battery cover, large gear, drive gear, small gear, metal balls x 8, terminal caps x 2, screws x 5.

Also required but not included in the kit: 1 x 1.5V AAA battery, a small crosshead screwdriver.