# Find Double Letter Codes

In this worksheet, students will identify a double letter code by identifying common features among images.

Key stage:  KS 2

Curriculum topic:   Spatial and Non-Verbal Reasoning

Curriculum subtopic:   Find the Missing Code

Difficulty level:

#### Worksheet Overview

Get ready to be a code breaker!

Each of the shapes below has a matching code. We need to crack the code and then apply it to an extra shape.

In this type of question, the first thing we need to look for is a letter that appears as a code more than once.

We can see the letter B twice. What do both of these shapes have in common?

They are both white faces with no shading, so the letter B must be used at the start of the code if the smiley face has no shading.

This means that a letter R at the start of the code must mean that the face is shaded.

What feature could the letter T refer to?

Both images with a T in their code have triangles on their heads. This must mean that the letter T is the code to show a triangular ‘hat’, whereas S must mean a square ‘hat’.

The final image is shaded so it will start with an R and it has a square ‘hat’ so it will end with an S.

So the correct answer is RS.

Let’s try another one:

Which code should be given to the final shape?

Let’s look for a letter that appears as a code more than once…That’s right, we can see the letter S twice.

What do both of the images linked by the letter S have in common?

They both have squares as the outside shape, so S must indicate that the outside shape is a square.

This means that M indicates a triangle as the outside shape and T indicates a circle.

So our final image must start with a T as the outside shape is a circle.

P appears as the second letter when the cross is not shaded and L appears when the cross is shaded.

Our final image needs to be given the code TP.

T for the outside circle and P for having an unshaded cross.

It’s now your turn to crack some codes!

Good luck detective.

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