Prime numbers

problem

Numbers as Shapes

Age

5 to 7

Challenge level

Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?
game
Favourite

Dicey Array

Age

5 to 11

Challenge level

Watch the video of this game being played. Can you work out the rules? Which dice totals are good to get, and why?
problem
Favourite

Statement Snap

Age

7 to 11

Challenge level

You'll need to know your number properties to win a game of Statement Snap...
problem

Swimming Pool Tiles

Age

7 to 11

Challenge level

This activity creates an opportunity to explore all kinds of number-related patterns.
problem

Prompt Cards

Age

7 to 11

Challenge level

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

Tom's Number

Age

7 to 11

Challenge level

Work out Tom's number from the answers he gives his friend. He will only answer 'yes' or 'no'.
problem

A Conversation Piece

Age

7 to 11

Challenge level

Take the number 6 469 693 230 and divide it by the first ten prime numbers and you'll find the most beautiful, most magic of all numbers. What is it?
problem
Favourite

Round and Round the Circle

Age

7 to 11

Challenge level

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.
problem
Favourite

Two Primes Make One Square

Age

7 to 11

Challenge level

Can you make square numbers by adding two prime numbers together?
problem

Penta Primes

Age

7 to 11

Challenge level

Using all ten cards from 0 to 9, rearrange them to make five prime numbers. Can you find any other ways of doing it?