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?
Factors and Multiples Game
A game in which players take it in turns to choose a number. Can you block your opponent?
Twinkle Twinkle
More Less is More
Air Nets
Matching Fractions, Decimals and Percentages
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
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.
Tea Cups
Eight Dominoes
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...
Olympic Measures
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?
Dicey Operations
Who said that adding, subtracting, multiplying and dividing couldn't be fun?
Forwards Add Backwards
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.
Consecutive Seven
Colourful Cube
Substitution Cipher
Gabriel's Problem
Take Ten Sticks
Factors and Multiples Puzzle
Cayley
Fractions jigsaw
American Billions
Can they be equal?
Multiples Sudoku
Sticky Numbers
What's it worth?
There are lots of different methods to find out what the shapes are worth - how many can you find?
Frogs
Sociable Cards
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?
Reflecting Squarely
In how many ways can you fit all three pieces together to make shapes with line symmetry?
Olympic Records
Odds, Evens and More Evens
Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...
Cinema Problem
A cinema has 100 seats. How can ticket sales make £100 for these different combinations of ticket prices?
Magic Letters
Last Biscuit
Can you find a strategy that ensures you get to take the last biscuit in this game?
Peaches today, Peaches tomorrow...
Overlaps
Fibonacci Surprises
Play around with the Fibonacci sequence and discover some surprising results!
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
3388
Temperature
Connect Three
crossing the bridge
Zin Obelisk
Marbles in a box
1 Step 2 Step
Making Rectangles, Making Squares
Tower of Hanoi
Always a multiple?
Opposite vertices
Can you recreate squares and rhombuses if you are only given a side or a diagonal?
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?
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.