Beautiful Old Set of Divided Cube Teaching BlocksI can't find any others out there quite like these, but I'm pretty certain they were used as teaching tools for math many years ago, and they feel very much akin to old geometric solids and the like. I know for sure that I could spend many hours playing around with these, configuring them in different ways, and the large cube, divided in several parts, is very much a puzzling exercise to piece back together once taken apart. It also seems to me that,