Check out the range of ‘Who’s the Imposter’ slides to help your students understand which element doesn’t match and why. These slides focus on place value from 100-1000. Each slide asks students to identify the imposter, justify their responses and explain their reasoning.

Use these as a warmup activity, daily maths tasks or even as a whole lesson to see the great mathematical brains in your classroom. You could have the students working individually, with a partner or even in a small group.

There are even matching student response cards to make this activity hands on and interactive as well as a recording sheet if you would like your students to record their answer and justification on paper.

Loving this ‘Who’s the Imposter’ activity? Why not try our other activities in this range:

• Who’s the Imposter? 3-Digit Numbers 
• Who’s the Imposter? 3D Objects