# Sort and classify shapes

Lesson

## Shapes of all kinds

When we look at shapes, there are many things we might notice about them, such as:

• their colour,
• how many sides they have,
• what kind of angles they have
• and whether they have straight or curved lines.

In this video, we look at these shapes and sort them using different features.

You can practice sorting some shapes yourself now.

## Shape sorters

It is possible that some shapes have more than one of the features we are looking at. A shape sorter helps us identify shapes that satisfy more than one of our rules. In Video 2 we see how a shape sorter can be used to group our shapes by different features.

Did you know?

A shape made up only of lines is called a polygon.

#### Worked Examples

##### Question 1

We are going to sort the following $6$6 shapes by colour.

1. Which shape sorter diagram is correct?

A

B

C

D

A

B

C

D

##### Question 2

We are going to sort the following $6$6 shapes by their angles.

1. Which shape sorter diagram is correct?

A

B

C

A

B

C

##### Question 3

We are going to sort the following $6$6 shapes by number of sides.

1. Which shape sorter diagram is correct?

A

B

C

A

B

C

### Outcomes

#### GM2-3

Sort objects by their spatial features, with justification.