Arrange 3 red, 3 blue and 3 yellow counters into a three-by-three square grid, so that there is only one of each colour in every row and every column
Jack has nine tiles. He put them together to make a square so that two tiles of the same colour were not beside each other. Can you find another way to do it?
In a bowl there are 4 Chocolates, 3 Jellies and 5 Mints. Find a way to share the sweets between the three children so they each get the kind they like. Is there more than one way to do it?
Put 10 counters in a row. Find a way to arrange the counters into five pairs, evenly spaced in a row, in just 5 moves, using the rules.
The Zargoes use almost the same alphabet as English. What does this birthday message say?
What is the smallest number of jumps needed before the white rabbits and the grey rabbits can continue along their path?
Seven friends went to a fun fair with lots of scary rides. They decided to pair up for rides until each friend had ridden once with each of the others. What was the total number rides?
There are lots of different methods to find out what the shapes are worth - how many can you find?
Place eight dots on this diagram, so that there are only two dots on each straight line and only two dots on each circle.
These activities focus on finding all possible solutions so if you work in a systematic way, you won't leave any out.
Only one side of a two-slice toaster is working. What is the quickest way to toast both sides of three slices of bread?
Can you use this information to work out Charlie's house number?
Use the clues to work out which cities Mohamed, Sheng, Tanya and Bharat live in.
My cousin was 24 years old on Friday April 5th in 1974. On what day of the week was she born?
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
Six friends sat around a circular table. Can you work out from the information who sat where and what their profession were?
In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?
When newspaper pages get separated at home we have to try to sort them out and get things in the correct order. How many ways can we arrange these pages so that the numbering may be different?
Sitting around a table are three girls and three boys. Use the clues to work out were each person is sitting.
These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.
This challenge, written for the Young Mathematicians' Award, invites you to explore 'centred squares'.
You cannot choose a selection of ice cream flavours that includes totally what someone has already chosen. Have a go and find all the different ways in which seven children can have ice cream.
Using the statements, can you work out how many of each type of rabbit there are in these pens?
Place eight queens on an chessboard (an 8 by 8 grid) so that none can capture any of the others.
If we had 16 light bars which digital numbers could we make? How will you know you've found them all?
Nina must cook some pasta for 15 minutes but she only has a 7-minute sand-timer and an 11-minute sand-timer. How can she use these timers to measure exactly 15 minutes?
How could you put eight beanbags in the hoops so that there are four in the blue hoop, five in the red and six in the yellow? Can you find all the ways of doing this?
This magic square has operations written in it, to make it into a maze. Start wherever you like, go through every cell and go out a total of 15!
These are the faces of Will, Lil, Bill, Phil and Jill. Use the clues to work out which name goes with each face.
A merchant brings four bars of gold to a jeweller. How can the jeweller use the scales just twice to identify the lighter, fake bar?
Lolla bought a balloon at the circus. She gave the clown six coins to pay for it. What could Lolla have paid for the balloon?
Make a pair of cubes that can be moved to show all the days of the month from the 1st to the 31st.
Arrange eight of the numbers between 1 and 9 in the Polo Square below so that each side adds to the same total.
Tim had nine cards each with a different number from 1 to 9 on it. How could he have put them into three piles so that the total in each pile was 15?
When intergalactic Wag Worms are born they look just like a cube. Each year they grow another cube in any direction. Find all the shapes that five-year-old Wag Worms can be.
Use the clues to find out who's who in the family, to fill in the family tree and to find out which of the family members are mathematicians and which are not.
I was in my car when I noticed a line of four cars on the lane next to me with number plates starting and ending with J, K, L and M. What order were they in?
There are seven pots of plants in a greenhouse. They have lost their labels. Perhaps you can help re-label them.
The Vikings communicated in writing by making simple scratches on wood or stones called runes. Can you work out how their code works using the table of the alphabet?
Systematically explore the range of symmetric designs that can be created by shading parts of the motif below. Use normal square lattice paper to record your results.
These activities focus on finding all possible solutions so working in a systematic way will ensure none are left out.
Can you create jigsaw pieces which are based on a square shape, with at least one peg and one hole?
Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!
These activities lend themselves to systematic working in the sense that it helps to have an ordered approach.
Winifred Wytsh bought a box each of jelly babies, milk jelly bears, yellow jelly bees and jelly belly beans. In how many different ways could she make a jolly jelly feast with 32 legs?
If you have three circular objects, you could arrange them so that they are separate, touching, overlapping or inside each other. Can you investigate all the different possibilities?
You have 5 darts and your target score is 44. How many different ways could you score 44?
Use the numbers and symbols to make this number sentence correct. How many different ways can you find?
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
The challenge here is to find as many routes as you can for a fence to go so that this town is divided up into two halves, each with 8 blocks.