Ravensburger Gravitrax Balls & Spinner Accessory - Marble Run & STEM Toy for Boys & Girls Age 8 & Up - Accessory for 2019 Toy of The Year Finalist Gravitrax
- What you get – the GraviTrax Balls & Spinner comes with 9 pieces, including 6 balls and spinner. The perfect accessory for curious kids aged 8 and up looking to add some flair to their starter set..
- Innovative – gravitrax is a modular, electronic-free interactive track system where you can design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your ball to the finish..
- Clear instructions – comes with detailed instructions so that you can start building and playing within minutes..
- Develops critical skills – playing and building with gravitrax develops spatial reasoning and planning skills, and provides a great stealth learning experience for STEM..