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?
Design an arrangement of display boards in the school hall which fits the requirements of different people.
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 shunt the trucks so that the Cattle truck and the Sheep truck change places and the Engine is back on the main line?
Building up a simple Celtic knot. Try the interactivity or download the cards or have a go on squared paper.
How will you go about finding all the jigsaw pieces that have one peg and one hole?
In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?
What is the best way to shunt these carriages so that each train can continue its journey?
Find your way through the grid starting at 2 and following these operations. What number do you end on?
If you split the square into these two pieces, it is possible to fit the pieces together again to make a new shape. How many new shapes can you make?
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?
What is the smallest cuboid that you can put in this box so that you cannot fit another that's the same into it?
Use the three triangles to fill these outline shapes. Perhaps you can create some of your own shapes for a friend to fill?
This task, written for the National Young Mathematicians' Award 2016, involves open-topped boxes made with interlocking cubes. Explore the number of units of paint that are needed to cover the boxes. . . .
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?
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?
A toy has a regular tetrahedron, a cube and a base with triangular and square hollows. If you fit a shape into the correct hollow a bell rings. How many times does the bell ring in a complete game?
A magician took a suit of thirteen cards and held them in his hand face down. Every card he revealed had the same value as the one he had just finished spelling. How did this work?
How many different ways can you find of fitting five hexagons together? How will you know you have found all the ways?
Can you cover the camel with these pieces?
Swap the stars with the moons, using only knights' moves (as on a chess board). What is the smallest number of moves possible?
How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?
What happens when you try and fit the triomino pieces into these two grids?
In this town, houses are built with one room for each person. There are some families of seven people living in the town. In how many different ways can they build their houses?
How many DIFFERENT quadrilaterals can be made by joining the dots on the 8-point circle?
What is the least number of moves you can take to rearrange the bears so that no bear is next to a bear of the same colour?
Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?
For this task, you'll need an A4 sheet and two A5 transparent sheets. Decide on a way of arranging the A5 sheets on top of the A4 sheet and explore ...
Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?
Can you work out what shape is made when this piece of paper is folded up using the crease pattern shown?
Investigate the number of paths you can take from one vertex to another in these 3D shapes. Is it possible to take an odd number and an even number of paths to the same vertex?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?
On which of these shapes can you trace a path along all of its edges, without going over any edge twice?
A game for two players. You'll need some counters.
How many balls of modelling clay and how many straws does it take to make these skeleton shapes?
Here you see the front and back views of a dodecahedron. Each vertex has been numbered so that the numbers around each pentagonal face add up to 65. Can you find all the missing numbers?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
Can you cut up a square in the way shown and make the pieces into a triangle?
Move four sticks so there are exactly four triangles.
Can you make a 3x3 cube with these shapes made from small cubes?
Can you work out what shape is made by folding in this way? Why not create some patterns using this shape but in different sizes?
Make a cube out of straws and have a go at this practical challenge.
We can cut a small triangle off the corner of a square and then fit the two pieces together. Can you work out how these shapes are made from the two pieces?
Here are shadows of some 3D shapes. What shapes could have made them?
Have you ever tried tessellating capital letters? Have a look at these examples and then try some for yourself.
What are the next three numbers in this sequence? Can you explain why are they called pyramid numbers?
This challenge involves eight three-cube models made from interlocking cubes. Investigate different ways of putting the models together then compare your constructions.
You want to make each of the 5 Platonic solids and colour the faces so that, in every case, no two faces which meet along an edge have the same colour.
Can you split each of the shapes below in half so that the two parts are exactly the same?