Ratio and proportion

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By Laura Ward

Ratio and Proportion are linked closely with multiplication, division and fractions. Scaling problems, such as making a number ten times larger, or finding half the size of an amount, are the solid foundation on which ratio and proportion are built. This article provides a range of creative activities that can be used across Key Stage One and Key Stage Two, sparking discussions and developing children’s reasoning around these ideas.


In the curriculum

Ratio and proportion

Although the 2014 curriculum does not use the terms ‘ratio’ and ‘proportion’ until Year 6, the basis of these concepts can be found across both Key Stages.

In a nutshell, ratio describes how one amount relates to another, for example:

“¾ of the class are boys and ¼ of the class are girls”

“for every 100g of flour I need to use 1 egg”.

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