Kids love thrilling roller coasters…and now they can design their own! Through trial & error, students learn how the track position affects the disk—as it rolls and falls from track to track & into the goal box! Plus, the magnetic tracks stick to any flat magnetic surface, so they’re perfect for use with our LA583 Stand-Up Magnetic Design Centre - sold separately. You get 5 double-sided challenge cards, 3 disks, a goal box and 10 magnetic tracks. Longest track is 15".