Three-Dimensional Geometry

Fourth Grade PA students have been having fun and learning about Three-Dimensional objects through the investigation of the numbers of vertices, faces, and edges that various closed three-dimensional figures have. In one lesson they discovered that for any closed three-dimensional figure, the sum of the number of faces and vertices is two more than the number of edges (Euler's Formula). Building nets they are able to determine whether the net is a net for a closed three-dimensional figure or not. We will be completing our unit on geometry and beginning our literature unit after Thanksgiving Break.