Experience the power of gravity! The hexagonal risers and track tiles simply fit and stack atop the four baseplates any way young engineers can imagine to create all kinds of amazing marble-run contraptions. Connect between towers and levels with the sturdy track pieces that drop into place with hook-like ends at almost any degree. Then, get creative with the thrilling stunt pieces. There's a switch tile that switches back and forth with every marble that passes through, a vortex tile that sends marbles spinning into a drop, and the best part - A magnetic cannon. As marbles approach, the magnetism makes them accelerate until - SLAM - They hit the cannon, their kinetic energy transfers through to the marbles on the other side, and the furthest is sent flying fast! Detailed instructions and the included task booklet make it easy to get started with suggested builds. And after that... There's no end to the exploration and experimentation possibilities! Delve into the mesmerizing wonders of physics and engineering with the GraviTrax Starter Set. GraviTrax Starter Set Open-ended, hexagonal marble run building set Encourages fine motor skills, spatial reasoning, logic, planning, problem-solving, experimentation A thrilling adventure in physics and engineering Pieces simply stack and fit into place atop the baseplates Track pieces easily hook onto sides of tiles at nearly any degree Experiment with gravity, acceleration, kinetic energy, and more Construction plan booklet and task booklet provide an easy start - Get the creative gears spinning Features 2 transparent levels - Build multiple stories of marble-run excitement! Amazingly open-ended - Add more GraviTrax sets for even more possibilities - Sold separately High quality materials and construction - Lasting durability, exceptional building experience Contents: Detailed instructions, construction plan booklet, task booklet, 4 base plates, 2 transparent levels, 6 marbles, 40 large height tiles, 12 small height tiles, 21 curves, 3 junctions, 2 switches, 3-in-1 tile, vortex, launch pad, magnetic cannon, 3 long tracks, 6 medium tracks, 9 short tracks, finish line, 4 basic tiles, inserts for basic tiles (2 catchers, freefall, splash, landing)