Ravensburger GraviTrax PRO - Extension Vertical Splitter Outlet and four panels

and four panels

This is one of the best sellers of the range

stomach with a piece of food inside

problem solving

Ravensburger GraviTrax PRO - Extension Vertical Splitter Outlet and four panelsSplit the directions of the marbles with the Gravitrax Pro Vertical Splitter Split 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 Add on with the GraviTrax Pro Starter Set. This STEM system [Science, Technology, Engineering and Maths] is an ideal one to teach kids