There are 20 results
Broad Topics > Numbers and the Number System > Representing numbers
Dotty Six
Stage: 1 and 2 Challenge Level: 
Dotty Six is a simple dice game that you can adapt in many ways.
Even and Odd
Stage: 1 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
Stage: 4 Challenge Level:
Have you seen this way of doing multiplication ?
Dotty Six for Two
Stage: 1 and 2 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
Stage: Early years, 1, 2 and 3
This article looks at how models support mathematical thinking about numbers and the number system
Matching Numbers
Stage: 1 Challenge Level:
Can you find different ways of showing the same number? Try this matching game and see!
Balance Power
Stage: 3, 4 and 5 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
Stage: 4 Challenge Level:
Where we follow twizzles to places that no number has been before.
Twizzle Twists
Stage: 4 Challenge Level:
Make the twizzle twist on its spot and so work out the hidden link.
A Story about Absolutely Nothing
Stage: 2, 3, 4 and 5
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
Stage: 4 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
Stage: 4 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
Stage: 4 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
Stage: 1 and 2
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,. . . .
Fibonacci's Three Wishes 1
Stage: 2 and 3
First or two articles about Fibonacci, written for students.
Multiplication Series: Number Arrays
Stage: 1 and 2
This article for teachers describes how number arrays can be a useful reprentation for many number concepts.
A Romantic Riddle
Stage: 2 Challenge Level:
Read this riddle and see if you can work out how the trees must be planted.
