GraviTrax is the all new STEM track system from Ravensburger! Use your imagination to build superb tracks and set the Gravity Spheres rolling!Experience the power of gravity! GraviTrax is the all new STEM track system from Ravensburger! Use your imagination to build superb tracks and set the gravity spheres rolling! Scoop to hoist your marble to the track above and extend your run. Combine the Scoop with the GraviTrax Starter-Set and keep the marble rolling for more action, heights, and speed. How long can the Scoop keep your ball rolling?This STEM system [Science, Technology, Engineering and Maths] is an ideal one to teach kids about gravity, magnetism, kinetic energy and fun. Hit a snag? Freestyle with your own track design or use the tasks and blueprints included to help you to get started in the world of GraviTrax! Are the gravity spheres stopping or flying off before reaching the end target? Time for some problem solving. Rebuild and try something different!  Contents 1x Scoop base, 1x Long Rail, 1x Medium Rail, 1x Short Rail