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Expanding and Factorising Quadratics - Difference of Two Squares
Key Stage: 4 ★

What do you notice about the product of the two numbers either side of a prime? Can you prove your observation?

This problem involves a significant 'final challenge' which can either be tackled on its own or after working on a set of related 'building blocks' designed to lead students to helpful insights. It is well suited for students who are working on the difference of two squares.

This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.


The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
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Review

4

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colm1405

12 years ago
4

An interesting little task which gets pupils thinking and allows for plenty of guided discussion. This might be best used either as a starter for an investigation or simply as a settler activity

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