Ravensburger's GraviTrax Starter-Set Bounce helps kids learn through play and teaches about gravity, magnetism and kinetic energy. Ravensburger has announced the launch of its new marble run, GraviTrax Starter-Set Bounce, which it describes as the ultimate gift for children who love to build th
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With the GraviTrax interactive track system from Ravensburger, you can design and build your own marble runs and experiment with gravity, magnetism,
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Our Building IDEA for 1 Gravitrax STARTER SET SPEED, with step-by-step building TUTORIAL! This time it's a FUN RACE 🙃 Enjoy! (More ideas & tutorials for different sets can be found on
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