Learn about the power of magnetism with a loop-the-loop ball bearing race track! Detailed instructions make it easy to connect all the pieces and build the winding, looping ball-bearing track. Send one of the ball bearings rolling down the slope. As soon as it turns through the curves - SNAP - it collides with the first magnetic cannon and another bearing is sent racing then... SNAP! - the second magnetic cannon sends yet another bearing racing up the ramp and around the curve to start the action all over again! Just flip the paddles to reload the cannons and keep the action moving around and around! Experience the thrills of magnetism first-hand with the 130-piece Geomag Mechanics Gravity Loops and Turns set.