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A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.

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Got It game for an adult and child. How can you play so that you know you will always win?

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

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I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?

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Does this 'trick' for calculating multiples of 11 always work? Why or why not?

Can you find any perfect numbers? Read this article to find out more...

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Factors and Multiples game for an adult and child. How can you make sure you win this game?

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Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

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A game in which players take it in turns to choose a number. Can you block your opponent?

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Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?

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A game for 2 or more people. Starting with 100, subratct a number from 1 to 9 from the total. You score for making an odd number, a number ending in 0 or a multiple of 6.

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Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?

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Given the products of adjacent cells, can you complete this Sudoku?

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Can you complete this jigsaw of the multiplication square?

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Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.

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Can you fill in this table square? The numbers 2 -12 were used to generate it with just one number used twice.

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In this maze of hexagons, you start in the centre at 0. The next hexagon must be a multiple of 2 and the next a multiple of 5. What are the possible paths you could take?

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Play this game and see if you can figure out the computer's chosen number.

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In this problem we are looking at sets of parallel sticks that cross each other. What is the least number of crossings you can make? And the greatest?

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How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?

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Can you sort numbers into sets? Can you give each set a name?

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Find the words hidden inside each of the circles by counting around a certain number of spaces to find each letter in turn.

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In a square in which the houses are evenly spaced, numbers 3 and 10 are opposite each other. What is the smallest and what is the largest possible number of houses in the square?

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In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?

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Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?

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Investigate the sum of the numbers on the top and bottom faces of a line of three dice. What do you notice?

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Factor track is not a race but a game of skill. The idea is to go round the track in as few moves as possible, keeping to the rules.

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Are these statements always true, sometimes true or never true?

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How many different rectangles can you make using this set of rods?

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The planet of Vuvv has seven moons. Can you work out how long it is between each super-eclipse?

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Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number. Can you sort out the clues and find the number?

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Imagine a wheel with different markings painted on it at regular intervals. Can you predict the colour of the 18th mark? The 100th mark?

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Can you predict when you'll be clapping and when you'll be clicking if you start this rhythm? How about when a friend begins a new rhythm at the same time?

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Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.

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Can you work out how to make each side of this balance equally balanced? You can put more than one weight on a hook.

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Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

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Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

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56 406 is the product of two consecutive numbers. What are these two numbers?

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Katie and Will have some balloons. Will's balloon burst at exactly the same size as Katie's at the beginning of a puff. How many puffs had Will done before his balloon burst?

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On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?

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These red, yellow and blue spinners were each spun 45 times in total. Can you work out which numbers are on each spinner?

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An investigation that gives you the opportunity to make and justify predictions.

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Can you find different ways of creating paths using these paving slabs?

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An environment which simulates working with Cuisenaire rods.

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Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

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Complete the magic square using the numbers 1 to 25 once each. Each row, column and diagonal adds up to 65.