### Teaching and Group Activities for Understanding

**Day 1 Teaching**

Display a pattern drawn on one side of a line of symmetry (see resources). Discuss the concept of ‘line of symmetry’ and begin to complete each pattern. Provide copies for children who complete each symmetrical pattern. Children create their own symmetrical patterns, colouring just 12 squares lines of symmetry.

**Group Activities**

-- Create symmetrical patterns across one or two lines of symmetry.

**Day 2 Teaching**

Draw an irregular but symmetrical hexagon. Ask children to say whether it has a line of symmetry. Then draw half of an irregular but symmetrical octagon. Children need to draw the other half. Discuss shapes with two lines of symmetry and draw one, identifying the two lines. Model how to use a mirror to check for symmetry, perhaps using the Symmetry ITP.**Group Activities**

Use the in-depth problem-solving investigation ‘Tremendous Tiles’ as today’s group activity.

Or, use these activities:

-- Identify the lines of symmetry on 2-D shapes; draw shapes with a given number of lines of symmetry.

-- Identify whether shapes are symmetrical. Draw the lines of symmetry on 2-D shapes.