
Two stones
This game is known as Pong hau k'i in China and Ou-moul-ko-no in Korea. Why not challenge a friend to play it with you?

Air nets

More less is more

Matching fractions, decimals and percentages

Factors and multiples game
A game in which players take it in turns to choose a number. Can you block your opponent?

Twinkle twinkle



Prime magic

Colour in the square

Dominoes

Got it
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.

Remainders
I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?

Pentanim

Low go

Fifteen
Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.


Two and two
How many solutions can you find to this sum? Each of the different letters stands for a different number.

Domino magic rectangle
An ordinary set of dominoes can be laid out as a 7 by 4 magic rectangle in which all the spots in all the columns add to 24, while those in the rows add to 42. Try it! Now try the magic square...

Tea cups

Eight dominoes





American billions


Can they be equal?

Colourful cube

Multiples Sudoku
Each clue in this Sudoku is the product of the two numbers in adjacent cells.


Sticky numbers

Gabriel's problem

What's it worth?
There are lots of different methods to find out what the shapes are worth - how many can you find?

Frogs

Reflecting squarely
In how many ways can you fit all three pieces together to make shapes with line symmetry?

Cinema problem
A cinema has 100 seats. How can ticket sales make £100 for these different combinations of ticket prices?

Shady symmetry

Special numbers
My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?

Square it
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Sociable cards

Consecutive seven

What numbers can we make?
Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?

Olympic records

Substitution cipher

Odds, evens and more evens
Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...

Take ten sticks

Magic letters

Factors and multiples puzzle

Olympic measures

Cayley


3388


Connect three
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

Crossing the bridge
Four friends must cross a bridge. How can they all cross it in just 17 minutes?

Zin obelisk


Fibonacci surprises
Play around with the Fibonacci sequence and discover some surprising results!

Marbles in a box

1 step 2 step

Making rectangles, making squares

Tower of Hanoi
The Tower of Hanoi is an ancient mathematical challenge. Working on the building blocks may help you to explain the patterns you notice.


Bow tie

Take three from five
Caroline and James pick sets of five numbers. Charlie tries to find three that add together to make a multiple of three. Can they stop him?

Last biscuit
Can you find a strategy that ensures you get to take the last biscuit in this game?

Peaches today, peaches tomorrow...

Always a multiple?
Think of a two digit number, reverse the digits, and add the numbers together. Something special happens...

Opposite vertices
Can you recreate squares and rhombuses if you are only given a side or a diagonal?

Squares in rectangles

Product Sudoku
The clues for this Sudoku are the product of the numbers in adjacent squares.

Where can we visit?

Route to infinity

Domino tetrads

One, three, five, seven

Tourism

Cuboids

Instant insanity
Given the nets of 4 cubes with the faces coloured in 4 colours, build a tower so that on each vertical wall no colour is repeated, that is all 4 colours appear.

Times right

Soma - so good
