Each geometric shape folds flat illustrating 2-dimensional and 3-dimensional behavior. A net is folded to build the 3D shape. It helps a child to relate 2D representation with its corresponding 3D shape through hands-on experience. Folding shapes are a great way to teach area, perimeter, and volume in the classroom through hands-on experience. It also gives an intuitive idea to derive formulae for surface areas of solids. Set of 14 Nets of 7 Different Shapes