Kids Can Use Their Imagination To Catapult Into Fun With The Hape Robot Factory Domino Set (122 Pieces) .Start By Loading The Ball In The Rail Car And Send It Down The Ramp. As The Car Tips Over, The Ball Is Released And Knocks The First Block Down To Start The Domino Effect .Roll Through A Normal And A Zig-Zag Track .Raise The Flag When The Last Domino Falls .Using Steam Values, This Set Introduces Your Child To The Concepts Of Potential Energy, Momentum And Gravity .Includes 5 Connectors, 5 Double-Sided Ball Tracks, A See-Saw, A Momentum Wheel, A Spinning Arm, A Gravity Release Arm, A Finish Flag Box, A Tunnel, A Tipper Car, Wooden Balls, A Marble, A Special Domino, A Half Domino, 2 Tall Dominoes, 2 Medium Dominoes And 93 Standard Dominoes .