If you have a child who loves science, or you're trying to find a way to peak your child's interest in science, then this is the toy your looking for! GraviTrax Starter Set is the perfect toy for children ages 8 and up - it is educational, creative, and fun! Discover how the laws of physics affect the journey the marble takes with curves, junctions, freefalls, and even a cannon! GraviTrax lets children take an idea from concept to completion and helps them practice problem-solving skills. It's no wonder that GraviTrax was the winner for ASTRA's 2018 Best Toys for Kids! in the Constructive Play Category! GraviTrax interactive track system lets you design and build your own marble runs and experiment with gravity, magnetism, and kinetics to propel your marble to the finish. Control the speed of the marble using a variety of tiles, levels, tracks and elements. GraviTrax open-ended building concept offers endless possibilities, allowing you to design a different track every time you play. Experience the power of gravity with this epic marble run toy. The GraviTrax Starter Set includes over 100 components, along with a construction plan booklet and task booklet, giving you everything you need to build your own action-packed track systems. Download the GraviTrax App for free, available for iPhones and Androids. Test new layouts and download instructions to build them in real life or enjoy a virtual reality experience from the ball's perspective! Order your GraviTrax starter set today and let the fun begin!