When a shape has a line of symmetry, it can be described as symmetrical.

Another term for a line of symmetry. If you were to fold a shape on its line of symmetry, both halves would match exactly.

If you were to fold a shape on its line of symmetry, both halves would match exactly.

Complete a symmetrical pattern

Maths

Identify different types of triangle

Explore, sort and classify triangles

Explore symmetry by joining two identical shapes

Investigate lines of symmetry in 2D shapes by folding

Find lines of symmetry in 2D shapes

Reflect polygons in a line of symmetry

Reflect polygons that are dissected by the line of symmetry

Diagonal lines of symmetry

Investigate symmetry and symmetrical patterns

In this unit pupils will pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes. In the future unit pupils will explain what area is and measure using counting as a strategy. They will make different shapes with the same area and compare the area of different shapes. 

In the prior unit pupils investigated ways to compose and decompose polygons. They investigated quadrilaterals with and without parallel and perpendicular sides. In this unit pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes.

In this unit pupils will complete and compose symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes.

Properties of 2D and 3D shapes and symmetry

Complete the sentence. When a shape can be folded in half and both sides are the same, the line where you folded is called the _________

What shape would go in this box to make the pattern symmetrical?

What shape is missing from this symmetrical pattern?

True or false. Sam has created a symmetrical pattern.

What shape should be added to make this pattern symmetrical?

How many equal sides and equal angles does an isosceles triangle have?

Complete the sentence. This triangle is  __________ .

__________ triangles have 3 equal sides and 3 equal angles.

This shape is symmetrical. One half of the shape is a __________ of the other side.

A shape has been folded in half. Which shape is it?

Complete a symmetrical pattern

Lesson outcome