There’s movement and surprises at every stage of this fun, robot-themed domino set. Set the dominoes in motion and watch as they release a ball and unleash the mighty robot hammer. Robot hammer: As the ball in this clever domino set collides with the robot hammer, potential energy is released and more dominoes topple. Includes two double-sided ball tracks: a regular track and a zig-zag track. View the ball's progress through the transparent tunnel. Momentum is transferred throughout the course by features including the momentum wheel, dominoes and ball. A finishing flag pops up for a dramatic ending as your last domino falls. Introduces children to the concepts of potential energy, momentum and gravity. Great for developing logical thinking and an understanding of the principles of physics.Details:Multicolor14.17" x 3.54" x 9.45" package size59 piecesWoodFor ages 4 and up