Construction set:Contraptions 200 Plank Construction Set

Kids use the Contraptions play set, a toy designed to foster an understanding of physics and engineering concepts, to build ball tracks of stackable planks. Joining the pieces of the set is straightforward, but kids use their imagination and skills in problem solving to construct working ball tracks and marble runs. The sets are a product of MindWare, a company founded in the late 1990s, that specializes in high-end educational toys.