### Prompt Cards

These two group activities use mathematical reasoning - one is numerical, one geometric.

### Exploring Wild & Wonderful Number Patterns

EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.

### Worms

Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?

# Clever Keys

### Why do this problem?

This short challenge presents children with the opportunity of exploring number operations and practising mental arithmetic in a motivating context.

### Key questions

What kind of number is $15$?
How will you remember what you have pressed?
What have you tried so far?

### Possible extension

You could challenge children to explain how they would work out, say $24 \times 37$ if a particular number on the calculator was broken. How would they do it if the $2$ was broken? What about if the $1$ and $2$ were broken etc.?

### Possible support

Having calculators to hand will allow learners to check their ideas and they may need to be reminded to record the process in some way.