Challenge Level

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.

Challenge Level

Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?

Challenge Level

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?

Challenge Level

Watch this film carefully. Can you find a general rule for explaining when the dot will be this same distance from the horizontal axis?

Challenge Level

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.

Challenge Level

In this game you are challenged to gain more columns of lily pads than your opponent.

Challenge Level

A game for two people that can be played with pencils and paper. Combine your knowledge of coordinates with some strategic thinking.

Challenge Level

Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

Challenge Level

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?

Challenge Level

Use the Cuisenaire rods environment to investigate ratio. Can you find pairs of rods in the ratio 3:2?

Challenge Level

A train building game for two players. Can you be the one to complete the train?

This article gives you a few ideas for understanding the Got It! game and how you might find a winning strategy.

Challenge Level

Calculate the fractional amounts of money to match pairs of cards with the same value.

Challenge Level

Train game for an adult and child. Who will be the first to make the train?

Challenge Level

Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?

The 2012 primary advent calendar features twenty-four of our posters, one for each day in the run-up to Christmas.

Challenge Level

Practise your number bonds whilst improving your memory in this matching pairs game.

Challenge Level

This is a game for two players. Can you find out how to be the first to get to 12 o'clock?

Challenge Level

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

Challenge Level

Practise your tables skills and try to beat your previous best score in this interactive game.

Challenge Level

Stop the Clock game for an adult and child. How can you make sure you always win this game?

Challenge Level

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?

Challenge Level

How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?

Challenge Level

Here are some rods that are different colours. How could I make a yellow rod using white and red rods?

Challenge Level

Can you work out how to make each side of this balance equally balanced? You can put more than one weight on a hook.

Challenge Level

Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.

Challenge Level

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.

Challenge Level

Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?

Challenge Level

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?

Challenge Level

Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.

Challenge Level

What is the greatest number of squares you can make by overlapping three squares?

Challenge Level

These interactive dominoes can be dragged around the screen.

Challenge Level

First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.

Challenge Level

In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?

Challenge Level

This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

Challenge Level

Here is a chance to play a version of the classic Countdown Game.

Challenge Level

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Challenge Level

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....?

Challenge Level

What shaped overlaps can you make with two circles which are the same size?

Challenge Level

Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.

Challenge Level

Use the interactivity to find out how many quarter turns the man must rotate through to look like each of the pictures.

Challenge Level

Can you complete this jigsaw of the multiplication square?

Challenge Level

Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.