Maths books don't have to be dull! Join Johnny Ball as he explores the history of maths and measuring and shows why maths it's a fundamental, incredible, magical way to find out how everything works. From pi, the amazing number that's vital for so much of everyday life, to perfect proportions (did you know Leonardo da Vinci worked out a person's ear is one-third the length of their face), discover how numbers, from ancient times to the modern day, have enabled us to explore, build and discover just about everything. With puzzles to solve, conundrums to crack and incredible tricks to show to friends, Johnny Ball will teach your child to become a mathmagician!