In this game for two players, you throw two dice and find the product. How many shapes can you draw on the grid which have that area or perimeter?
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....?
Only one side of a two-slice toaster is working. What is the quickest way to toast both sides of three slices of bread?
How long does it take to brush your teeth? Can you find the matching length of 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 can you say about these shapes? This problem challenges you to create shapes with different areas and perimeters.
A thoughtful shepherd used bales of straw to protect the area around his lambs. Explore how you can arrange the bales.
How will you go about finding all the jigsaw pieces that have one peg and one hole?
Hover your mouse over the counters to see which ones will be removed. Click to remove them. The winner is the last one to remove a counter. How you can make sure you win?
Place the numbers 1 to 10 in the circles so that each number is the difference between the two numbers just below it.
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?
Can you shunt the trucks so that the Cattle truck and the Sheep truck change places and the Engine is back on the main line?
What is the best way to shunt these carriages so that each train can continue its journey?
Swap the stars with the moons, using only knights' moves (as on a chess board). What is the smallest number of moves possible?
10 space travellers are waiting to board their spaceships. There are two rows of seats in the waiting room. Using the rules, where are they all sitting? Can you find all the possible ways?
Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?
Take a rectangle of paper and fold it in half, and half again, to make four smaller rectangles. How many different ways can you fold it up?
Can you put the numbers 1 to 8 into the circles so that the four calculations are correct?
This practical challenge invites you to investigate the different squares you can make on a square geoboard or pegboard.
My local DIY shop calculates the price of its windows according to the area of glass and the length of frame used. Can you work out how they arrived at these prices?
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
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.
Can you work out how many cubes were used to make this open box? What size of open box could you make if you had 112 cubes?
This task challenges you to create symmetrical U shapes out of rods and find their areas.
Design an arrangement of display boards in the school hall which fits the requirements of different people.
Place six toy ladybirds into the box so that there are two ladybirds in every column and every row.
Can you find all the ways to get 15 at the top of this triangle of numbers? Many opportunities to work in different ways.
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?
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
How many different ways can you find of fitting five hexagons together? How will you know you have found all the ways?
Find the sum and difference between a pair of two-digit numbers. Now find the sum and difference between the sum and difference! What happens?
This challenge, written for the Young Mathematicians' Award, invites you to explore 'centred squares'.
Using different numbers of sticks, how many different triangles are you able to make? Can you make any rules about the numbers of sticks that make the most triangles?
Each of the main diagonals of this sudoku must contain the numbers 1 to 9 and each rectangle width the numbers 1 to 4.
A Sudoku that uses transformations as supporting clues.
Tom and Ben visited Numberland. Use the maps to work out the number of points each of their routes scores.
Try out the lottery that is played in a far-away land. What is the chance of winning?
What is the largest 'ribbon square' you can make? And the smallest? How many different squares can you make altogether?
What is the smallest cuboid that you can put in this box so that you cannot fit another that's the same into it?
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?
A game for 2 people. Take turns placing a counter on the star. You win when you have completed a line of 3 in your colour.
Two sudokus in one. Challenge yourself to make the necessary connections.
Investigate all the different squares you can make on this 5 by 5 grid by making your starting side go from the bottom left hand point. Can you find out the areas of all these squares?
How many different rectangles can you make using this set of rods?
60 pieces and a challenge. What can you make and how many of the pieces can you use creating skeleton polyhedra?
How many DIFFERENT quadrilaterals can be made by joining the dots on the 8-point circle?
Have a go at this game which has been inspired by the Big Internet Math-Off 2019. Can you gain more columns of lily pads than your opponent?
What is the smallest number of tiles needed to tile this patio? Can you investigate patios of different sizes?
A dog is looking for a good place to bury his bone. Can you work out where he started and ended in each case? What possible routes could he have taken?
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.