A large wooden box containing a cylinder, cube, ellipsoid, cone, sphere, square-based pyramid, triangular-based pyramid, ovoid, rectangular prism and triangular prism. The solids are made of wood and are painted blue. The box includes 5 wooden plane figures and 3 wooden stands for curved solids. This material introduces the child to solid geometry and helps in the transition of understanding from the three-dimensional geometric solids to two-dimensional plane figures.