With the electronic components of the GraviTrax Power Starter Set Launch, children aged 8 and up can actively interact with the Ravensburger marble run system. Using the electronic GraviTrax Power elements Starter and Goal, players can interact with their track via the controller. The Starter Stone and Goal Arena each hold up to 7 marbles. The two Power elements of the marble run are connected wirelessly. A new marble is set to start as soon as the previous marble reaches the goal? With the GraviTrax Power Starter Set Launch, that's no problem: the next marble is automatically sent onto the track with this Power Set. Included building plans make it easy to get started, after which creativity knows no bounds. By freely designing the marble runs and exploring the rolling behavior of the marbles, children's understanding of science is sharpened, and gravity is made tangible. The STEM symbol on Ravensburger products indicates a category of games that allows for playful experiences with science. STEM (Science, Technology, Engineering, Mathematics) corresponds to the German MINT (Mathematics, Computer Science, Natural Sciences, Technology).