Reading, writing and representing numbers

problem
That number square

Age

5 to 11

Challenge level

Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?
problem
How would we count?

Age

5 to 11

Challenge level

An activity centred around observations of dots and how we visualise number arrangement patterns.
article
Models in mind

This article looks at how models support mathematical thinking about numbers and the number system
problem
Take three numbers

Age

7 to 11

Challenge level

What happens when you add three numbers together? Will your answer be odd or even? How do you know?
problem
Dotty six

Age

5 to 11

Challenge level

Dotty Six is a simple dice game that you can adapt in many ways.
problem
Number match

Age

5 to 7

Challenge level

Can you work as a group to match these numbers?
problem
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?
problem
Galley division

Age

14 to 16

Challenge level

Can you explain how Galley Division works?
problem
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?
problem
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.