The fischertechnik Profi Dynamic L2 marble run construction kit offers a versatile building experience for youngsters aged 9 and over. With a remarkable track length of 4.5 meters, loopings and three 180-degree curves, the marbles race through the self-built courses. An XS motor included in the set drives the mechanical ball lift and automatically transports the marbles back to the starting point. By building seven different models, the set playfully teaches basic physical principles such as the equilibrium of forces. Complementary didactic eLearning accompanying materials support the understanding of physical laws directly while experimenting.