Key learning points

1. Use everyday language to compare shapes e.g. wide, narrow, tall, short.
2. Be able to count the sides and vertices of different 2D shapes.
3. Understand how to sort shapes into two sets based on 'is' and 'is not' criteria.
4. Be able to guess sorting rules by looking at how shapes have been sorted into two sets.

Common misconception

Keywords

• Sides - The straight edges around the outside of a 2D shape.

• Vertices - The corners of a 2D or 3D shape, where two or more edges or sides meet.

• Rectangle - A 2D shape with 4 straight sides and 4 vertices.

• Triangle - A 2D shape with 3 straight sides and 3 vertices.