Ravensburger
What makes a good toy? GraviTrax ticks all the boxes! This is a creative, modular, expandable track system that challenges kids to use their imagination to design and build their own marble runs! GraviTrax building sets use STEM-friendly concepts while developing critical thinking and problem-solving skills. Fully open-ended, each GraviTrax set offers a variety of boredom-busting play options for hours of fascinating fun. Once you've mastered the basics, simply add expansion kits and accessories to propel these metal balls onto the tricked-out track of your dreams!
3-7+ years
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