Zooming through steep curves and loops - the car races along the self-built roller coaster test tracks powered by a spring mechanism and is constantly faced with new challenges. Children aged 8 to 12 can assemble the roller coaster themselves using flexible tracks and test various routes - all without electricity. What happens when the car gains more weight? What physical phenomena can be experienced up close with the different constructions? Constantly rebuild and discover. Whether it's G-forces, acceleration, or gravity: with the thrilling roller coaster fun, physics is guaranteed to never be boring. The instructions assist in constructing the models and conducting experiments. In this experiment kit, various test tracks are waiting to be built and tried out - physics with loops, steep curves, and plenty of speed.