Jon Chapman – författare

Train your brain to be quicker, sharper and more acute by challenging yourself with these puzzles and games. This book does much more than give you the skills to tackle maths with confidence - instead it shows you how, by learning to solve practical problems and perfecting your mental arithmetic, you can strengthen all your key thinking skills and astonish your friends and family. This is the ultimate mental workout - and the only one to show you how these fun and diverting number games will actually make you smarter, quicker and more acute than any of your peers.