A Plethora of Polyhedra

So, just what is a polyhedron? we could say that a polyhedron is a simple closed surface in space whose boundary is composed of polygonal regions, but most middle school students would not understand this definition. Instead, involving students in an activity in which they actually create polyhedra enable them to understand the characteristics of different polyhedra and develop a clear definition for themselves. Once students gain a hands-on understanding of polyhedra, the shapes can be used to reveal a plethora of other geometric concepts.