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