Set of 12 folding 2D3D geosolids including cube, cylinder, cone, triangular prism, square pyramid, triangular pyramid, rectangular pyramid, pentagonal pyramid, hexagonal pyramid, rectangular prism, pentagonal prism, and hexagonal prism. Ideal for exploring the properties of 3D solids, relationships between 2D shapes and 3D solids, volume and capacity, and surface area. Includes 12 solids made of durable plastic with rounded corners and edges, and 12 corresponding folding nets made from flexible plastic. Excellent hands-on tool for teaching and exploring volume, surface area and 2D3D properties. Compare volumes of different solids with the same height. The solids have an 8cm base. Activity guide included.