# Shapes with the same areas can have different perimeters and vice versa

I know that shapes with the same area can have different perimeters and vice-versa.

# Shapes with the same areas can have different perimeters and vice versa

I know that shapes with the same area can have different perimeters and vice-versa.

## Lesson details

### Key learning points

- Area and perimeter are calculated from the side lengths of 2D shapes.
- Area is measured in square units.
- Perimeter is measured in units of length.

### Common misconception

It is highly common for pupils to mix up area and perimeter or to confuse the notations for the two.

Allow children plenty of opportunity to identify perimeter and area for the same shapes and discuss why the unit of measure is different. You may also wish to build in deliberate errors when modelling or into tasks for children to identify and check.

### Keywords

Area - Area is a measurement of a flat surface. It measures a 2D space.

Perimeter - The distance around a 2D shape is its perimeter.

### 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).

## Video

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