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Nuffield Foundation
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Integers
The module, from the Nuffield Foundation, focuses on addition, subtraction, multiplication and division of directed numbers. The approach is the highly unusual one of representing directed numbers by equivalence classes of ordered pairs. This representation is supported by the use of a cardboard ‘machine’ which the authors call an ‘Integerminator’ – essentially a physical and visual way of representing the ordered pairs.
This module consists of 10 workcards and associated teacher’s notes. The teachers' notes provide information on the theoretical underpinning of the work; whereas the cards develop addition, subtraction, multiplication and division of directed numbers by a highly unusual approach using ordered pairs.
The workcards are a single set intended to be used sequentially.
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