Can you put the 25 coloured tiles into the 5 x 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
Watch this film carefully. Can you find a general rule for explaining when the dot will be this same distance from the horizontal axis?
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
Here is a chance to play a version of the classic Countdown Game.
This article gives you a few ideas for understanding the Got It! game and how you might find a winning strategy.
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
How good are you at estimating angles?
A game for 2 players that can be played online. Players take it in turns to select a word from the 9 words given. The aim is to select all the occurrences of the same letter.
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.
In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?
Calculate the fractional amounts of money to match pairs of cards with the same value.
A game for two people that can be played with pencils and paper. Combine your knowledge of coordinates with some strategic thinking.
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.
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.
An interactive activity for one to experiment with a tricky tessellation
Imagine a wheel with different markings painted on it at regular intervals. Can you predict the colour of the 18th mark? The 100th mark?
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Is it possible to place 2 counters on the 3 by 3 grid so that there is an even number of counters in every row and every column? How about if you have 3 counters or 4 counters or....?
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Can you match the halves in this interactive game?
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?
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?
How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?
An animation that helps you understand the game of Nim.
A train building game for two players. Can you be the one to complete the train?
Use the clues to colour each square.
Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?
Choose 13 spots on the grid. Can you work out the scoring system? What is the maximum possible score?
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.
The 2012 primary advent calendar features twenty-four of our posters, one for each day in the run-up to Christmas.
Train game for an adult and child. Who will be the first to make the train?
Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?
Stop the Clock game for an adult and child. How can you make sure you always win this game?
A game in which players take it in turns to choose a number. Can you block your opponent?
Here are some rods that are different colours. How could I make a yellow rod using white and red rods?
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?
An odd version of tic tac toe
Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?
Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?
Practise your number bonds whilst improving your memory in this matching pairs game.
This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
Practise your tables skills and try to beat your previous best score in this interactive game.
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
Can you complete this jigsaw of the multiplication square?
A card pairing game involving knowledge of simple ratio.
Play this well-known game against the computer where each player is equally likely to choose scissors, paper or rock. Why not try the variations too?
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?