This game challenges you to locate hidden triangles in The White Box by firing rays and observing where the rays exit the Box.
Can you beat Piggy in this simple dice game? Can you figure out Piggy's strategy, and is there a better one?
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
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.
A game for 1 person. Can you work out how the dice must be rolled from the start position to the finish? Play on line.
What shaped overlaps can you make with two circles which are the same size? What shapes are 'left over'? What shapes can you make when the circles are different sizes?
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Can you put the 25 coloured tiles into the 5 x 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?
Can you work out what is wrong with the cogs on a UK 2 pound coin?
An animation that helps you understand the game of Nim.
This activity challenges you to make collections of shapes. Can you give your collection a name?
A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.
How can the same pieces of the tangram make this bowl before and after it was chipped? Use the interactivity to try and work out what is going on!
What is the greatest number of squares you can make by overlapping three squares?
Here is a chance to play a version of the classic Countdown Game.
Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.
How good are you at estimating angles?
A game in which players take it in turns to choose a number. Can you block your opponent?
What happens when you turn these cogs? Investigate the differences between turning two cogs of different sizes and two cogs which are the same.
What shape is the overlap when you slide one of these shapes half way across another? Can you picture it in your head? Use the interactivity to check your visualisation.
Watch this film carefully. Can you find a general rule for explaining when the dot will be this same distance from the horizontal axis?
Choose 13 spots on the grid. Can you work out the scoring system? What is the maximum possible score?
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.
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?
Can you match the halves in this interactive game?
Calculate the fractional amounts of money to match pairs of cards with the same value.
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....?
Train game for an adult and child. Who will be the first to make the train?
Arrange any number of counters from these 18 on the grid to make a rectangle. What numbers of counters make rectangles? How many different rectangles can you make with each number of counters?
How many triangles can you make using sticks that are 3cm, 4cm and 5cm long?
If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?
Can you see why 2 by 2 could be 5? Can you predict what 2 by 10 will be?
Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?
Board Block game for two. Can you stop your partner from being able to make a shape on the board?
Imagine a wheel with different markings painted on it at regular intervals. Can you predict the colour of the 18th mark? The 100th mark?
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
An interactive game to be played on your own or with friends. Imagine you are having a party. Each person takes it in turns to stand behind the chair where they will get the most chocolate.
Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.
Stop the Clock game for an adult and child. How can you make sure you always win this game?
Here are some rods that are different colours. How could I make a yellow rod using white and red rods?
Use the interactivity or play this dice game yourself. How could you make it fair?
Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.
These interactive dominoes can be dragged around the screen.
Try out the lottery that is played in a far-away land. What is the chance of winning?
Use this animation to experiment with lotteries. Choose how many balls to match, how many are in the carousel, and how many draws to make at once.
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?
A tool for generating random integers.
Choose a symbol to put into the number sentence.
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?