Move just three of the circles so that the triangle faces in the
NRICH December 2006 advent calendar - a new tangram for each day in
the run-up to Christmas.
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?
Twenty four games for the run-up to Christmas.
A generic circular pegboard resource.
A game for 2 people that everybody knows. You can play with a
friend or online. If you play correctly you never lose!
Play this well-known game against the computer where each player is
equally likely to choose scissors, paper or rock. Why not try the
Our 2008 Advent Calendar has a 'Making Maths' activity for every
day in the run-up to Christmas.
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?
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Match the halves.
Use the interactivity to find out how many quarter turns the man
must rotate through to look like each of the pictures.
Exchange the positions of the two sets of counters in the least possible number of moves
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?
A train building game for 2 players.
Complete the squares - but be warned some are trickier than they
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 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 game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
Incey Wincey Spider game for an adult and child. Will Incey get to the top of the drainpipe?
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?
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
An odd version of tic tac toe
A card pairing game involving knowledge of simple ratio.
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
How many right angles can you make using two sticks?
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?
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?
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 outline of Granma T?
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!
Work out the fractions to match the cards with the same amount of
Investigate how the four L-shapes fit together to make an enlarged
L-shape. You could explore this idea with other shapes too.
Imagine a wheel with different markings painted on it at regular
intervals. Can you predict the colour of the 18th mark? The 100th
Can you fit the tangram pieces into the outlines of these clocks?
Can you fit the tangram pieces into the outlines of these people?
Can you fit the tangram pieces into the outline of this brazier for roasting chestnuts?
Can you fit the tangram pieces into the outline of Little Fung at the table?
Can you fit the tangram pieces into the outline of the child walking home from school?
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.
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.
Can you fit the tangram pieces into the outlines of the chairs?
Can you fit the tangram pieces into the outlines of the lobster, yacht and cyclist?
Can you fit the tangram pieces into the outline of this telephone?
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.
Use the Cuisenaire rods environment to investigate ratio. Can you
find pairs of rods in the ratio 3:2? How about 9:6?
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?