We can choose any of the four pictures to be the one that doesn't belong, and we give the reason why we think it doesn't.
Here's an example:
Which one do you think is different, and why? You could write your answer as a comment.
Here's some of the things that the two classes thought:
|Sometimes we get a bit of a discussion going.|
This time, KM said the bottom right one was a diamond rather than a square.
Some children thought is was still a square, but slanting or turned round.