Phantom X

Readers must pit their wits against Professor Fiendish in the Foul Formula Challenge and Chainsaw Charlie and his gruesome gang discover that even the simplest maths can be murderous. Using a host of hilarious characters, Kjartan Poskitt presents all the tricks, tips and shortcuts to maths they don' [...]
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Readers must pit their wits against Professor Fiendish in the Foul Formula Challenge and Chainsaw Charlie and his gruesome gang discover that even the simplest maths can be murderous. Using a host of hilarious characters, Kjartan Poskitt presents all the tricks, tips and shortcuts to maths they don't teach at school.