### Prompt Cards

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

### Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

### 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.

# Zargon Glasses

### Why do this problem?

This problem is good for children who are confident with large numbers but need practice in finding combinations using a systematic method.

### Key questions

What is the smallest number of lenses a family could need?
What is the greatest number of lenses a family could need?
How do you know you haven't got that combination already?

### Possible extension

Children could investigate what would happen if some of the families have five eyes.

### Possible support

It might be helpful for some children to use counters with either three or four dots on to represent the eyes.