Symmetry is an important idea in maths and science.

When a shape is exactly the same on both sides, as if it were reflected in a mirror along a line, it is said to have symmetry. Some examples of regular polygons that have symmetry are a square, a circle and an equilateral triangle.

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## Resources

#### Symmetry Knowledge Organiser

Members of Teaching Packs can download a comprehensive knowledge organiser to accompany this topic. It includes key information that your children can use for reference and research.

## Symmetry Facts

• When a shape or picture has symmetry, it is symmetrical.
• A shape or picture that does not have symmetry, is said to be asymmetrical.
• You can check if a shape is symmetrical by cutting it out of paper and seeing if it can be folded exactly into two halves, along a line of symmetry.
• Symmetry can be found in the natural world, for example in the honeycomb of a beehive or the arrangement of petals on a flower.
• The Taj Mahal is an example of a symmetrical building. Not only is the building symmetrical, in includes many symmetrical patterns in the floors and decorations.

## Videos

#### Intro to Symmetry

A wonderful video that can be used to introduce your children to the concept of symmetry.

Running time: 2:35

#### Symmetry Song for Kids

Running time: 3:14

#### The Symmetry Trick

Running time: 5:21

#### Create a Symmetrical Butterfly

An art demonstration that you can follow to create your own painting of a symmetrical butterfly.

Running time: 4:07

## Books

##### Look Twice

A card mirror is the key to this amazing exploration of visual and verbal connections. Each of the pictures can be transformed by means of the mirror into a pair of opposites.

##### What is Symmetry in Nature?

This fantastic reference book for children shows actual examples of symmetry in life.

##### Is It Symmetrical?

A wonderful book for younger children, with clear pictures and simple text, to introduce them to symmetry.

##### Seeing Symmetry

This clear and concise book explains different types of symmetry and shows you how to make your own symmetrical masterpieces.

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