All parts are pre-punched: no cutting out. The folds are pre-creased and can be easily folded. Simple instructions show the assembly. Only glue (for paper) and a cord for the crane are needed. Many possibilities to play with. Excavator, road roller, dump truck and crane are movable. Promotes spatial awareness and hand-eye coordination. With many individual parts: Excavator, crane, road roller, bulldozer, construction truck, 3 trucks (concrete mixer, dump truck, skip loader), 5 construction workers with tools, pylons, barrier signals and construction site signs.