Ravensburger GraviTrax PRO Helix Expansion - STEM Marble Run Track Building Set for Kids Ages 8+ | Compatible with 2019 Toy of The Year Finalist GraviTrax | Perfect for STEM Learning & Creative Play at Home or School

Gravitrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and Accessories.

[GraviTrax PRO Helix] Cross your marble run down and over with the twisted flair of the “GraviTrax PRO Helix”

[INNOVATIVE] The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, kinetics.

[STEM TOY] Boys and girls ages 8 and up can experience educational and science play. The franchise has sold over 15.5 million units worldwide and has ranked as the No.1 marble run system in the U.S., according to the NPD Group.

[COMPATIBLE] Easily extend play time - All sets are compatible and functional with all GraviTrax systems.

[GREAT GIFT] GraviTrax is an a ideal holiday and birthday gift for creative, curious kids and adults who love to build.