# Identify position and number to find the odd one out

In this worksheet, students will identify an image that does not fit in with the rest of the group. The focus will be on position and number, so students will need to look at where shapes are and how many there are.

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Key stage:  KS 2

Curriculum topic:   Spatial and Non-Verbal Reasoning

Curriculum subtopic:   Odd One Out

Difficulty level:

#### Worksheet Overview

Welcome shape sorter.

We’ve got a bit of a problem we hoped you could help us with.

Our shape sorting robot seems to have malfunctioned and not sorted the shapes correctly.  Could you help us solve this issue?

Which of the shapes below is the odd one out and doesn’t fit well with the others?

a)         b)         c)         d)         e)

First, we need to look for something that four of the shapes have in common.

All of the images are made up of one large white circle and one small black circle.

It is always a useful idea to look at the position of shapes.

In shapes a, b, d and e, the black circle is on the edge of the white circle.

Shape c is therefore the odd one out as it has a black circle in the middle and not on the edge like the others.

Let’s try another one together:

Which shape below is the odd one out?

a)         b)         c)         d)         e)

First, we need to look for something that four of the shapes have in common.

All of the images are rectangles split into two equal pieces with smaller shapes in each half.

In questions like this, counting is really important. What could we count?

Shape a has 3 shapes on each side of the halfway line.

Shape b has 4 shapes on one side and 6 on the other.

Shape c has 5 shapes on each side of the line.

Shape d has 4 shapes on either side.

Shape e has 2 shapes on either side.

This means that image b is the odd one out as it has a different number of shapes in each section, unlike the other options.

It’s now your turn to identify the odd shape.

Remember to look at the position of shapes within the image and always see if there is something you can count.

Good luck shape sorter!

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