This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
Stop the Clock game for an adult and child. How can you make sure you always win this game?
A game for 2 people that everybody knows. You can play with a
friend or online. If you play correctly you never lose!
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?
Exchange the positions of the two sets of counters in the least possible number of moves
A generic circular pegboard resource.
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!
A card pairing game involving knowledge of simple ratio.
An interactive activity for one to experiment with a tricky tessellation
Investigate how the four L-shapes fit together to make an enlarged
L-shape. You could explore this idea with other shapes too.
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Choose 13 spots on the grid. Can you work out the scoring system? What is the maximum possible score?
Using angular.js to bind inputs to outputs
Train game for an adult and child. Who will be the first to make the train?
Our 2008 Advent Calendar has a 'Making Maths' activity for every
day in the run-up to Christmas.
A train building game for 2 players.
Watch this film carefully. Can you find a general rule for
explaining when the dot will be this same distance from the
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?
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?
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.
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.
Find out how we can describe the "symmetries" of this triangle and
investigate some combinations of rotating and flipping it.
Can you fit the tangram pieces into the outline of Little Fung at the table?
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?
Can you fit the tangram pieces into the outline of this brazier for roasting chestnuts?
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
Take it in turns to make a triangle on the pegboard. Can you block your opponent?
Use the Cuisenaire rods environment to investigate ratio. Can you
find pairs of rods in the ratio 3:2? How about 9:6?
Can you fit the tangram pieces into the outlines of these people?
You'll need two dice to play this game against a partner. Will Incey Wincey make it to the top of the drain pipe or the bottom of the drain pipe first?
Can you fit the tangram pieces into the outline of this telephone?
An odd version of tic tac toe
Can you fit the tangram pieces into the outline of this shape. How would you describe it?
Complete the squares - but be warned some are trickier than they
Use your mouse to move the red and green parts of this disc. Can
you make images which show the turnings described?
Can you fit the tangram pieces into the outlines of Mai Ling and Chi Wing?
Use the interactivity to find out how many quarter turns the man
must rotate through to look like each of the pictures.
Can you fit the tangram pieces into the outline of Little Ming playing the board game?
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 fit the tangram pieces into the outlines of these clocks?
If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?
How many right angles can you make using two sticks?
Can you fit the tangram pieces into the outlines of the chairs?
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 is the greatest number of squares you can make by overlapping
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
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?
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.