Use these four dominoes to make a square that has the same number of dots on each side.

If you hang two weights on one side of this balance, in how many different ways can you hang three weights on the other side for it to be balanced?

In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.

Here are some rods that are different colours. How could I make a dark green rod using yellow and white rods?

What could the half time scores have been in these Olympic hockey matches?

Use the information about Sally and her brother to find out how many children there are in the Brown family.

There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. Can you use the information given to find out how many eggs are in each basket?

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

Start with three pairs of socks. Now mix them up so that no mismatched pair is the same as another mismatched pair. Is there more than one way to do it?

Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?

Can you work out how to balance this equaliser? You can put more than one weight on a hook.

Can you hang weights in the right place to make the equaliser balance?

An environment which simulates working with Cuisenaire rods.

Annie and Ben are playing a game with a calculator. What was Annie's secret number?

What two-digit numbers can you make with these two dice? What can't you make?

Can you put these times on the clocks in order? You might like to arrange them in a circle.

Try this matching game which will help you recognise different ways of saying the same time interval.

Ram divided 15 pennies among four small bags. He could then pay any sum of money from 1p to 15p without opening any bag. How many pennies did Ram put in each bag?

An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.

This challenge is about finding the difference between numbers which have the same tens digit.

Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?

Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of 3 dominoes?

Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?

Can you fill in the empty boxes in the grid with the right shape and colour?

Sort the houses in my street into different groups. Can you do it in any other ways?

An activity centred around observations of dots and how we visualise number arrangement patterns.

How could you estimate the number of pencils/pens in these pictures?

Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?

This problem is designed to help children to learn, and to use, the two and three times tables.

Complete the squares - but be warned some are trickier than they look!

Can you use the numbers on the dice to reach your end of the number line before your partner beats you?

"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?

Some children were playing a game. Make a graph or picture to show how many ladybirds each child had.

My coat has three buttons. How many ways can you find to do up all the buttons?

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

My cube has inky marks on each face. Can you find the route it has taken? What does each face look like?

There were chews for 2p, mini eggs for 3p, Chocko bars for 5p and lollypops for 7p in the sweet shop. What could each of the children buy with their money?

Can you sort these triangles into three different families and explain how you did it?

Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?

Ben and his mum are planting garlic. Use the interactivity to help you find out how many cloves of garlic they might have had.