The Dipper picks up the ball, transports it downwards, and sets it down. This connects different heights in a new and very practical way. The side from which the ball leaves the action stone can be chosen freely. This allows for further construction in one or two directions. The side can be changed either after each run or at irregular intervals by hand. When combined with a GraviTrax starter set, this adds even more variety to the track. What paths will the ball take with the Dipper? With GraviTrax, the fun of building knows no bounds. The GraviTrax marble run system can be infinitely expanded with extensions, ensuring limitless building and play enjoyment. By freely designing the marble runs and exploring the rolling and flying behavior of the balls, understanding of science is sharpened, and gravity is experienced up close. The STEM symbol on the products indicates a category of games that allows for playful engagement with science. STEM (Science, Technology, Engineering, Mathematics) corresponds to the German MINT (Mathematics, Computer Science, Natural Sciences, Technology).