Cliff Slider Expandable Looping Marble Run (Slope Toy) Educational Toy Pythagoras Newton Physics

Attach it to walls or windows for an easy way to enjoy a tall slider. Even if you don't have space on the floor, you can make it anywhere there's a flat surface like a window or door! While playing, you can experience the principles of gravity, power, and centrifugal force. With the expandable looping, the fun of speed and action is added. Experiment to see how fast the ball needs to go to get through the loop!