Puzzle Critic
@puzzlecritic
Maths teacher, author of Elastic Numbers amzn.to/2najKp8, Problem Solving In GCSE Mathematics amzn.to/2D6YBkO and A Ring Of Cats And Dogs amzn.eu/d/hHSV8QI
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http://puzzlecritic.wordpress.com 11-04-2016 21:41:32
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