Become a super spy, crack codes and train your brain! By using maths and logic to solve and navigate the codes, kids will build great skills to help them with problem solving and reasoning. Developed by Dr Gareth Moore, an expert in the field, this book will have your kids cracking codes in no time! Reveal secret messages with codes used by real-life spies Use maths to crack into mysterious safes Become a master tech-decoder using logic, and more Discover cryptic co-ordinates to hunt down hidden treasure …and much more! Including amazing alphabet and number codes, grids, and picture puzzles. Don’t worry, if kids get stuck, there are tips and subtle clues to help improve code-breaking skills. With full-colour graphics and illustrations throughout, this book is as eye-catching as it is entertaining.