A large wooden box containing a cylinder, cube, ellipsoid, cone, sphere, square-based pyramid, triangular-based pyramid, ovoid, rectangular prism, and triangular prism painted in glossy blue.
To develop the child's stereognosis sense, which creates a mental picture through touch. To help make the child more aware of the basic shapes found in the cultural environment. Indirectly, to prepare the child for later work in Mathematics, especially geometry, by identifying solid shapes and exploring the relationships between their plane and curved surfaces.
Need help on how to use these? View this video