Lee was writing all the counting numbers from 1 to 20. She stopped
for a rest after writing seventeen digits. What was the last number
25 students are queuing in a straight line. How many are there
between Julia and Jenny?
In this problem, we're investigating the number of steps we would
climb up or down to get out of or into the swimming pool. How could
you number the steps below the water?
Buzzy Bee was building a honeycomb. She decided to decorate the
honeycomb with a pattern using numbers. Can you discover Buzzy's
pattern and fill in the empty cells for her?
This problem challenges you to find out how many odd numbers there
are between pairs of numbers. Can you find a pair of numbers that
has four odds between them?
Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?
What could these drawings, found in a cave in Spain, represent?
Reasoning based on this Japanese activity.
Can you find a path from a number at the top of this network to the
bottom which goes through each number from 1 to 9 once and once
A game played with a standard pack of cards.
How many legs do each of these creatures have? How many pairs is
Which comes next in each pattern of dominoes?
Here is a version of the game 'Happy Families' for you to make and
Imagine a pyramid which is built in square layers of small cubes.
If we number the cubes from the top, starting with 1, can you
picture which cubes are directly below this first cube?
Find the words hidden inside each of the circles by counting around
a certain number of spaces to find each letter in turn.
Help share out the biscuits the children have made.
Daisy and Akram were making number patterns. Daisy was using beads
that looked like flowers and Akram was using cube bricks. First
they were counting in twos.
This is a game in which your counters move in a spiral round the snail's shell. It is about understanding tens and units.
You'll need two dice to play this game against a partner. Will Incey Wincey make it to the top of the drain pipe or the bottom of the drain pipe first?
There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?
In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.
If you have ten counters numbered 1 to 10, how many can you put
into pairs that add to 10? Which ones do you have to leave out?
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
Can you each work out the number on your card? What do you notice?
How could you sort the cards?
Exactly 195 digits have been used to number the pages in a book.
How many pages does the book have?
Can you complete this jigsaw of the 100 square?
In how many ways could Mrs Beeswax put ten coins into her three
puddings so that each pudding ended up with at least two coins?
Noah saw 12 legs walk by into the Ark. How many creatures did he see?
Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?
Place the numbers 1 to 8 in the circles so that no consecutive
numbers are joined by a line.
In this game, you can add, subtract, multiply or divide the numbers
on the dice. Which will you do so that you get to the end of the
number line first?
In a square in which the houses are evenly spaced, numbers 3 and 10
are opposite each other. What is the smallest and what is the
largest possible number of houses in the square?
Can you work out how to win this game of Nim? Does it matter if you
go first or second?
Some children were playing a game. Make a graph or picture to show
how many ladybirds each child had.
Solve this Sudoku puzzle whose clues are in the form of sums of the
numbers which should appear in diagonal opposite cells.
Can you follow the rule to decode the messages?
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?
An activity centred around observations of dots and how we visualise number arrangement patterns.
In this investigation we are going to count the number of 1s, 2s,
3s etc in numbers. Can you predict what will happen?
Dotty Six is a simple dice game that you can adapt in many ways.
Can you design a new shape for the twenty-eight squares and arrange
the numbers in a logical way? What patterns do you notice?
Kimie and Sebastian were making sticks from interlocking cubes and
lining them up. Can they make their lines the same length? Can they
make any other lines?
Helen Joyce interviews the neuropsychologist Brian Butterworth
whose research has shown that we are all born with a "built-in"
sense of cardinal number.
Can you deduce the pattern that has been used to lay out these
This article for teachers describes a project which explores
thepower of storytelling to convey concepts and ideas to children.
Investigate the different ways these aliens count in this
challenge. You could start by thinking about how each of them would
write our number 7.
"Ip dip sky blue! Who's 'it'? It's you!" Where would you position
yourself so that you are 'it' if there are two players? Three
How would you count the number of fingers in these pictures?