article
An alphanumeric
Freddie Manners, of Packwood Haugh School in Shropshire solved an
alphanumeric without using the extra information supplied and this
article explains his reasoning.
Reasoning, convincing and proving
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Symmetric tangles
The tangles created by the twists and turns of the Conway rope
trick are surprisingly symmetrical. Here's why!
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Proving
These tasks provide opportunities for learners to get better at proving, whether through proof by exhaustion, proof by logical argument, proof by counter example or generic proof.
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Reasoning, convincing and proving - short problems
A collection of short Stage 3 and 4 problems requiring Reasoning, Convincing and Proving.