**Unit 2: Basic Geometric Shapes 3D **

**Lesson 2: ****Basic Geometric 3D Shapes**

Properties of 3D Shapes

3D shapes have faces, edges and vertices.

Faces – a face, or sometimes referred to as a side, is a flat or curved surface. For example, a cuboid has six faces, a squared-based pyramid has five and a sphere has one.

Edges – An edge is where two faces meet. For example, a cuboid has 12 edges, a square-based pyramid has eight edges and a sphere has none.

Vertices – Vertices are the corners where edges meet. A cuboid has four vertices, a square-based pyramid has five vertices and a sphere has none.

Types of 3D shapes that children will learn and recognise are:

Cube

Cuboid

Sphere

Cylinder

Square-Based Pyramid

Triangular Prism

Pentagonal Pyramid

Hexagonal Prism

**2D and 3D Unit Summary**

**Self Study Links: **

- Study through the PPT entitled “3D Shapes Mental Math” provided
- 3d_shapes Mental Math
- Check your Neolms for Unit Test uploaded (Quizzes covered 2D and 3D Geometric Shapes)