Ravensburger GraviTrax Bridges Expansion Set – Marble Run and STEM Toy for Boys and Girls Age 8 and Up – Expansion for…

GraviTrax allows you to design and build your own marble runs and experiment with gravity, magnetism, and kinetics to propel your marble to the finish. With a variety of tiles, levels, tracks and elements, you can control the speed of the marble

GRAVITRAX: The popular STEM toy for boys and girls ages 8 and up – over 6 million sold worldwide
WHAT YOU GET: 13 pieces, including adjustable bridges, new extra-long narrow and slow tracks and more
INNOVATIVE: The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your marbles to the finish
CLEAR INSTRUCTIONS: Comes with clear instructions so that you can start building and playing within minutes
FOSTERS STEM SKILLS: Playing and building with GraviTrax promotes problem solving, creativity and encourages cooperative play with others