There are 17 results
Broad Topics > Numbers and the Number System > Representing numbers
Eightness of Eight
Age 5 to 7 Challenge Level:
What do you see as you watch this video? Can you create a similar video for the number 12?
Roman Numerals
Age 7 to 11 Challenge Level:
Can you find some examples when the number of Roman numerals is fewer than the number of Arabic numerals for the same number?
Three Neighbours
Age 7 to 11 Challenge Level:
Look at three 'next door neighbours' amongst the counting numbers. Add them together. What do you notice?
Dotty Six
Age 5 to 11 Challenge Level:
Dotty Six is a simple dice game that you can adapt in many ways.
Even and Odd
Age 5 to 7 Challenge Level:
This activity is best done with a whole class or in a large group. Can you match the cards? What happens when you add pairs of the numbers together?
Neighbourly Addition
Age 7 to 14 Challenge Level:
I added together some of my neighbours house numbers. Can you explain the patterns I noticed?
Dotty Six for Two
Age 5 to 11 Challenge Level:
Dotty Six game for an adult and child. Will you be the first to have three sixes in a straight line?
Models in Mind
Age 3 to 14
This article looks at how models support mathematical thinking about numbers and the number system
Matching Numbers
Age 5 to 7 Challenge Level:
Can you find different ways of showing the same number? Try this matching game and see!
Balance Power
Age 11 to 18 Challenge Level:
Using balancing scales what is the least number of weights needed to weigh all integer masses from 1 to 1000? Placing some of the weights in the same pan as the object how many are needed?
A Story about Absolutely Nothing
Age 7 to 18
This article for the young and old talks about the origins of our number system and the important role zero has to play in it.
Arrow Arithmetic 1
Age 14 to 16 Challenge Level:
The first part of an investigation into how to represent numbers using geometric transformations that ultimately leads us to discover numbers not on the number line.
Multiplication Series: Illustrating Number Properties with Arrays
Age 5 to 11
This article for teachers describes how modelling number properties involving multiplication using an array of objects not only allows children to represent their thinking with concrete materials,. . . .
Multiplication Series: Number Arrays
Age 5 to 11
This article for teachers describes how number arrays can be a useful reprentation for many number concepts.
A Romantic Riddle
Age 7 to 11 Challenge Level:
Read this riddle and see if you can work out how the trees must be planted.
