This is a LEGO Education kit. When assembled, you can play a game where a weight shoots a basketball into a hoop. It helps children develop their thinking skills because they assemble it themselves and figure out how to make the shots successful. I think it's especially fun for preschoolers to elementary school students. In fact, something similar was used in elementary school classes. It's stored in a 100-yen store case, so I'll send it as is. The blocks are clean, but the instruction manual has some folds. LEGO programming materials, etc., have been attracting attention in recent years, so how about it?