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.
Match the halves.
Work out the fractions to match the cards with the same amount of money.
What are the coordinates of the coloured dots that mark out the tangram? Try changing the position of the origin. What happens to the coordinates now?
A game for 2 people that everybody knows. You can play with a friend or online. If you play correctly you never lose!
An interactive activity for one to experiment with a tricky tessellation
A variant on the game Alquerque
Move just three of the circles so that the triangle faces in the opposite direction.
A generic circular pegboard resource.
A card pairing game involving knowledge of simple ratio.
An odd version of tic tac toe
Use the interactivity to find out how many quarter turns the man must rotate through to look like each of the pictures.
Take it in turns to place a domino on the grid. One to be placed horizontally and the other vertically. Can you make it impossible for your opponent to play?
A game for 2 people that can be played on line or with pens and paper. Combine your knowledege of coordinates with your skills of strategic thinking.
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Twenty four games for the run-up to Christmas.
Our 2008 Advent Calendar has a 'Making Maths' activity for every day in the run-up to Christmas.
Choose 13 spots on the grid. Can you work out the scoring system? What is the maximum possible score?
Train game for an adult and child. Who will be the first to make the train?
A train building game for 2 players.
Complete the squares - but be warned some are trickier than they look!
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
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?
How have the numbers been placed in this Carroll diagram? Which labels would you put on each row and column?
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?
Incey Wincey Spider game for an adult and child. Will Incey get to the top of the drainpipe?
An interactive game for 1 person. You are given a rectangle with 50 squares on it. Roll the dice to get a percentage between 2 and 100. How many squares is this? Keep going until you get 100. . . .
NRICH December 2006 advent calendar - a new tangram for each day in the run-up to Christmas.
If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?
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?
Use your mouse to move the red and green parts of this disc. Can you make images which show the turnings described?
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!
How many right angles can you make using two sticks?
This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
Can you work out how to balance this equaliser? You can put more than one weight on a hook.
Can you find just the right bubbles to hold your number?
If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?
Imagine a wheel with different markings painted on it at regular intervals. Can you predict the colour of the 18th mark? The 100th mark?
Use the interactivity or play this dice game yourself. How could you make it fair?
Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.
Starting with the number 180, take away 9 again and again, joining up the dots as you go. Watch out - don't join all the dots!
A game to be played against the computer, or in groups. Pick a 7-digit number. A random digit is generated. What must you subract to remove the digit from your number? the first to zero wins.
Exchange the positions of the two sets of counters in the least possible number of moves
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?
Take it in turns to make a triangle on the pegboard. Can you block your opponent?
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
Find out how we can describe the "symmetries" of this triangle and investigate some combinations of rotating and flipping it.
Use the Cuisenaire rods environment to investigate ratio. Can you find pairs of rods in the ratio 3:2? How about 9:6?
Use the blue spot to help you move the yellow spot from one star to the other. How are the trails of the blue and yellow spots related?