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A resource to try once children are familiar with number lines, and they have begun to use them for addition. It could be a good way to talk about subtraction. Leah and Tom each have a number line. Can you work out where their counters will land?

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Use your mouse to move the red and green parts of this disc. Can you make images which show the turnings described?

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

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These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?

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Shut the Box game for an adult and child. Can you turn over the cards which match the numbers on the dice?

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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?

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You have a set of the digits from 0 â€“ 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?

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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?

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Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?

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This is a game for two players. Can you find out how to be the first to get to 12 o'clock?

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Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

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Strike it Out game for an adult and child. Can you stop your partner from being able to go?

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In this investigation, you are challenged to make mobile phone numbers which are easy to remember. What happens if you make a sequence adding 2 each time?

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This is an adding game for two players. Can you be the first to reach the target?

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Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?