Best of all

Greg decides to take a leap of faith and turn his decisions over to chance

promoting eco-friendliness and sparking discussions on how each of us can contribute to a healthier planet

assuage parental fears

by 'crazi-color (shape only)

Gravitrax PRO Splitter Expansion Set owls Best of allSplit the directions of the marbles with the Splitter. See if the marbles have enough speed to roll across the trap door. If they roll too slow, the marbles will fall to awaiting tracks below and will go in different directions. Combine this accessory with any GraviTrax Starter Set. GraviTrax is a modular 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