Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Challenge Level

Move just three of the circles so that the triangle faces in the opposite direction.

Challenge Level

What is the greatest number of squares you can make by overlapping three squares?

Challenge Level

Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.

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Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?

Challenge Level

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Challenge Level

Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.

Challenge Level

There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

Challenge Level

Take it in turns to make a triangle on the pegboard. Can you block your opponent?

Challenge Level

Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.

Challenge Level

Use the interactivity to find all the different right-angled triangles you can make by just moving one corner of the starting triangle.

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

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First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.

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Board Block game for two. Can you stop your partner from being able to make a shape on the board?

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How many different triangles can you draw on the dotty grid which each have one dot in the middle?

Challenge Level

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

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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.

Challenge Level

Is it possible to place 2 counters on the 3 by 3 grid so that there is an even number of counters in every row and every column? How about if you have 3 counters or 4 counters or....?

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What shaped overlaps can you make with two circles which are the same size?

Challenge Level

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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Place six toy ladybirds into the box so that there are two ladybirds in every column and every row.

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Can you put the numbers 1 to 8 into the circles so that the four calculations are correct?

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Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?

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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?

Challenge Level

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

Challenge Level

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

Challenge Level

Place the numbers 1 to 10 in the circles so that each number is the difference between the two numbers just below it.

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Can you find all the different triangles on these peg boards, and find their angles?

Challenge Level

How many different triangles can you make on a circular pegboard that has nine pegs?

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What do the numbers shaded in blue on this hundred square have in common? What do you notice about the pink numbers? How about the shaded numbers in the other squares?

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Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?

Challenge Level

A train building game for two players. Can you be the one to complete the train?

Challenge Level

In this game you are challenged to gain more columns of lily pads than your opponent.

Challenge Level

These interactive dominoes can be dragged around the screen.

Challenge Level

Stop the Clock game for an adult and child. How can you make sure you always win this game?

Challenge Level

Have a go at this well-known challenge. Can you swap the frogs and toads in as few slides and jumps as possible?

Challenge Level

Ahmed has some wooden planks to use for three sides of a rabbit run against the shed. What quadrilaterals would he be able to make with the planks of different lengths?

Challenge Level

Train game for an adult and child. Who will be the first to make the train?

The 2012 primary advent calendar features twenty-four of our posters, one for each day in the run-up to Christmas.

Challenge Level

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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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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Use the interactivity to move Pat. Can you reproduce the graphs and tell their story?

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Can you match pairs of fractions, decimals and percentages, and beat your previous scores?

Challenge Level

Practise your tables skills and try to beat your previous best score in this interactive game.

Challenge Level

Play this well-known game against the computer where each player is equally likely to choose scissors, paper or rock. Why not try the variations too?