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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# What's Left?

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### Month Mania

### Starfish Spotting

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Age 5 to 7

Challenge Level

- Problem
- Getting Started
- Student Solutions
- Teachers' Resources

You could start by making the table to use, then colouring in the
numbers counting in $2$s omitting $2$ itself.

Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?

How many starfish could there be on the beach, and how many children, if I can see 28 arms?