Ravensburger Gravitrax Marble Run and Stem Toy Innovative Construction Set

A few pieces missing, pictures show what is missing but is still an excellent play set. The few missing parts do not affect play. Problem Solving, Spatial Awareness, STEM Concepts Ravensburger Gravitrax Marble Run and Stem Toy for Age 8 and up an Innovative Construction Set with Endless Building Possibilities The ideal gift for creative, curious kids who love to build Power the marbles with gravity-based elements in a race to the finish Customize and experiment with tricks and stunts to keep the marbles rolling faster and further Experience educational and science play with 24 problem-solving building exercises. Thank you for buying second hand and supporting sustainable practices.