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### Number and algebra

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### Working mathematically

### Advanced mathematics

### For younger learners

# The Moons of Vuvv

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### Doplication

### Round and Round the Circle

### Making Cuboids

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Age 7 to 11

Challenge Level

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- Getting Started
- Student Solutions
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You could look at just two moons and work out how many years it
takes for them to coincide.

Which moons might it be good to look at first?

It might help to use a calculator and to jot your ideas on paper.

Which moons might it be good to look at first?

It might help to use a calculator and to jot your ideas on paper.

We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?

What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.

Let's say you can only use two different lengths - 2 units and 4 units. Using just these 2 lengths as the edges how many different cuboids can you make?