Did you realize how much maths you are already using when playing computer games, planning a journey, or baking a cake? This book shows how to expand the knowledge you've already got, how your brain works things out, and how you can get even better at all sorts of maths. Explore amazing algebra, puzzling primes, super sequences, and special shapes. Challenge yourself with quizzes to answer, puzzles to solve, codes to crack, and geometrical illusions to inspire you, and meet the big names and even bigger brains who made mathematical history, such as Pythagoras, Grace Hopper, and Alan Turing. Whether you're a maths mastermind, numbers nerd, or completely clueless with calculations, train your brain to come out on top.