This didactic set helps children to understand basic geometrical principles. By seeing, holding and playing children learn the meaning of bodies, surfaces, shapes, symetry and relations. It’s made of solid beechwood. Solids are 11 cm wide and 7 cm high/in diameter. They serve as model for better imagining and understanding of geometry. Bases of solids fit to each other. Byplaying with the set children learn about shapes, relations, symetry. Children attribute relevant properties to geometric bodies by touching them. Didactic value is upgraded with maching geometric faces for better understanding of surfaces, edges and corners.