There are 22 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?
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?
Napier's Location Arithmetic
Age 14 to 16 Challenge Level:
Have you seen this way of doing multiplication ?
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?
Twizzles Venture Forth
Age 14 to 16 Challenge Level:
Where we follow twizzles to places that no number has been before.
Twizzle Twists
Age 14 to 16 Challenge Level:
Make the twizzle twist on its spot and so work out the hidden link.
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.
Twizzle Wind Up
Age 14 to 16 Challenge Level:
A loopy exploration of z^2+1=0 (z squared plus one) with an eye on winding numbers. Try not to get dizzy!
Arrow Arithmetic 2
Age 14 to 16 Challenge Level:
Introduces the idea of a twizzle to represent number and asks how one can use this representation to add and subtract geometrically.
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.
