This book is the legacy of twenty years of mathematics teaching. During this time the author searched for motivational techniques, mnemonics, insightful proofs, and serious applications of humour to aid his teaching. The result is an amazing book: part philosophy, part humour, and completely fascinating. This is one of the best ``methods'' books ever written in the field of teaching elementary mathematics. Anybody interested in the psychology of learning or teaching mathematics will find this book a treasure.