Students gain a unique understanding of area, nets, symmetry and more—with hands-on shapes that make geometry concepts easy to grasp! Our set includes 8 transparent, 3-D geometric forms—each labeled with its name…plus 8 flat plastic nets with easy-fold creases that let you fold them up and fit them inside. As students explore the shapes in solid and flat form, they learn to visualize the difference between 2-D and 3-D shapes, calculate surface area, explore volume and more. The cube measures approximately 3 1/8".