Investigate lines of symmetry in 2D shapes by folding
I can use folding to investigate lines of symmetry in different 2D shapes.
Investigate lines of symmetry in 2D shapes by folding
I can use folding to investigate lines of symmetry in different 2D shapes.
Lesson details
Key learning points
- When you fold a shape on a line of symmetry, the two halves will match exactly.
- A line of symmetry is not always horizontal or vertical.
- Some quadrilaterals, such as a parallelogram, have no lines of symmetry.
- Others, such as a kite, have one line of symmetry. Others, such as a rectangle, can have more than one line of symmetry.
Common misconception
Children may not recognise a line of symmetry when it is neither horizontal nor vertical.
Allow opportunities for exploring lines of symmetry practically by folding cut outs of lots of different shapes. Encourage children to view and describe these in different orientations to help them see that a line of symmetry can be in any direction.
Keywords
Kite - A quadrilateral with two pairs of adjacent, equal sides.
Line of symmetry - If you were to fold a shape on its line of symmetry, both halves would match exactly.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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