GraviTrax Starter Set "Physics" Includes the rare Fischertechnik action

Includes the rare Fischertechnik action figure

Flashlight

Food-Grade Silicone

From the Bataan Death March to the sinking of the USS Indianapolis

Air instead of Flash

GraviTrax Starter Set "Physics" Includes the rare Fischertechnik actionGraviTrax With GraviTrax your child can design and build hi tech marble runs while using gravity, magnetism, kinetic energy, momentum, velocity, and problem solving to propel marbles to the finish. With this open ended construction set your child will have access to two manuals. In the first, he will be asked to build a marble run precisely as pictured. In the second, he will be told the exact pieces and a few placements, but he will need to complete