Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
An odd version of tic tac toe
Work out the fractions to match the cards with the same amount of
Play this well-known game against the computer where each player is
equally likely to choose scissors, paper or rock. Why not try the
Match the halves.
A game for 2 people that everybody knows. You can play with a
friend or online. If you play correctly you never lose!
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?
Twenty four games for the run-up to Christmas.
A train building game for 2 players.
This was a problem for our birthday website. Can you use four of these pieces to form a square? How about making a square with all five pieces?
Complete the squares - but be warned some are trickier than they
A card pairing game involving knowledge of simple ratio.
Move just three of the circles so that the triangle faces in the
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. . . .
An interactive activity for one to experiment with a tricky tessellation
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 can be played on line or with pens and paper. Combine your knowledege of coordinates with your skills of strategic thinking.
A generic circular pegboard resource.
Our 2008 Advent Calendar has a 'Making Maths' activity for every
day in the run-up to Christmas.
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?
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.
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?
Train game for an adult and child. Who will be the first to make the train?
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?
Using angular.js to bind inputs to outputs
Choose 13 spots on the grid. Can you work out the scoring system? What is the maximum possible score?
NRICH December 2006 advent calendar - a new tangram for each day in
the run-up to Christmas.
Incey Wincey Spider game for an adult and child. Will Incey get to the top of the drainpipe?
If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?
Use your mouse to move the red and green parts of this disc. Can
you make images which show the turnings described?
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?
Yasmin and Zach have some bears to share. Which numbers of bears
can they share so that there are none left over?
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 the interactivity to sort these numbers into sets. Can you give
each set a name?
Can you make the green spot travel through the tube by moving the
yellow spot? Could you draw a tube that both spots would follow?
Investigate the smallest number of moves it takes to turn these
mats upside-down if you can only turn exactly three at a time.
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
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!
Board Block game for two. Can you stop your partner from being able to make a shape on the board?
You have 4 red and 5 blue counters. How many ways can they be
placed on a 3 by 3 grid so that all the rows columns and diagonals
have an even number of red counters?
Stop the Clock game for an adult and child. How can you make sure you always win this game?
Exchange the positions of the two sets of counters in the least possible number of moves
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.
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?
Find out how we can describe the "symmetries" of this triangle and
investigate some combinations of rotating and flipping it.
How many right angles can you make using two sticks?
Use the Cuisenaire rods environment to investigate ratio. Can you
find pairs of rods in the ratio 3:2? How about 9:6?
Take it in turns to make a triangle on the pegboard. Can you block your opponent?