Reading, writing and representing numbers

article
Activities on the Gattegno chart

In this article, Alf outlines six activities using the Gattegno chart, which help to develop understanding of place value, multiplication and division.
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.
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
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?
problem
Stone age counting

Age

5 to 7

Challenge level

What could these drawings, found in a cave in Spain, represent?
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
Number match

Age

5 to 7

Challenge level

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

Age

5 to 7

Challenge level

Can you find different ways of showing the same number? Try this matching game and see!
interactivity
Favourite

Dominoes environment

Age

5 to 11

Challenge level

These interactive dominoes can be dragged around the screen.
problem
Dotty six

Age

5 to 11

Challenge level

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