Place six toy ladybirds into the box so that there are two ladybirds in every column and every row.
Can you cover the camel with these pieces?
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?
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?
Ben and his mum are planting garlic. Use the interactivity to help you find out how many cloves of garlic they might have had.
Sort the houses in my street into different groups. Can you do it in any other ways?
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?
Hover your mouse over the counters to see which ones will be removed. Click to remover them. The winner is the last one to remove a counter. How you can make sure you win?
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....?
Here are some rods that are different colours. How could I make a dark green rod using yellow and white rods?
How many different rhythms can you make by putting two drums on the wheel?
Can you work out how to balance this equaliser? You can put more than one weight on a hook.
A tetromino is made up of four squares joined edge to edge. Can this tetromino, together with 15 copies of itself, be used to cover an eight by eight chessboard?
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
Use the interactivity to find all the different right-angled triangles you can make by just moving one corner of the starting triangle.
What happens when you try and fit the triomino pieces into these two grids?
Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.
How many different triangles can you make on a circular pegboard that has nine pegs?
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?
This problem is based on a code using two different prime numbers less than 10. You'll need to multiply them together and shift the alphabet forwards by the result. Can you decipher the code?
How many triangles can you make using sticks that are 3cm, 4cm and 5cm long?
Use the clues to colour each square.
Try out the lottery that is played in a far-away land. What is the chance of winning?
Have a go at this well-known challenge. Can you swap the frogs and toads in as few slides and jumps as possible?
Place the numbers 1 to 10 in the circles so that each number is the difference between the two numbers just below it.
Find out what a "fault-free" rectangle is and try to make some of your own.
Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?
If you hang two weights on one side of this balance, in how many different ways can you hang three weights on the other side for it to be balanced?
Can you find all the different ways of lining up these Cuisenaire rods?
Move just three of the circles so that the triangle faces in the opposite direction.
In your bank, you have three types of coins. The number of spots shows how much they are worth. Can you choose coins to exchange with the groups given to make the same total?
A game for 2 people that everybody knows. You can play with a friend or online. If you play correctly you never lose!
Choose a symbol to put into the number sentence.
How have the numbers been placed in this Carroll diagram? Which labels would you put on each row and column?
Find out how we can describe the "symmetries" of this triangle and investigate some combinations of rotating and flipping it.
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Stop the Clock game for an adult and child. How can you make sure you always win this game?
Can you find all the different triangles on these peg boards, and find their angles?
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
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.
Use the interactivity to investigate what kinds of triangles can be drawn on peg boards with different numbers of pegs.
Can you fit the tangram pieces into the outlines of the lobster, yacht and cyclist?
Twenty four games for the run-up to Christmas.
Can you fit the tangram pieces into the outline of Granma T?
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
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?
Can you see why 2 by 2 could be 5? Can you predict what 2 by 10 will be?
Can you make a train the same length as Laura's but using three differently coloured rods? Is there only one way of doing it?
Explore the different tunes you can make with these five gourds. What are the similarities and differences between the two tunes you are given?