- Numerical twister: Like normal twister, but each spot has a number on. The caller calls out a number and you have to make a sum that is equal to it. Can increase difficulty by saying that the sum must include 3 numbers or must include a multiplication.
- Fractions and Decimals top trumps (google docs seems to mess it up a bit, but just click the link to download the original): Top trumps cards with a combination of decimals, fractions, large numbers and fractions of amounts. This is the one I see most potential problems with, and I will need to train my year 7s on what to do when the year 4s don't know how to work it out (hopefully they will be able to show them using a mini-whiteboard).
- Estimation game: pupils have sock puppets on (making it a bit more appealing, but also to make it harder to feel out the answer). They each grab at some beads in the middle then try to estimate how many they have. Once pupils get good at this, add a question at the end of guessing how much everyone has (activity stolen from here - just under 10 minutes in).
- Making shapes: Have a large elastic circle. Pupils step inside it and stretch it apart with their legs, trying to work out how to make different shapes (activity stolen from here).

I'm really hoping that I can pull this off. I'll let you know how it goes.