How Machines Work

　　A unique interactive guide to understanding simple machines and mechanisms. Each spread introduces you to a key mechanical principle, for example levers, gears and pulleys. You then put these into practice by building working models using the perforated workshop board and colour-coded machine parts. A timeline on every spread explores how each machine has been used throughout history. With a hands-on approach that brings theories to life, this is a must for budding engineers.

作者簡介

　　Nick Arnold is best known for his Horrible Science series. He has always regarded himself as a writer rather than specifically a science writer, and his background is journalism and publishing. Allan Sanders studied illustration at Manchester Metropolian University and the Royal College of Art in London, and has had the good fortune to work for clients including The Economist, The Guardian, New Scientist, Vodaphone and Penguin USA. Allan's simple everyman characters often find themselves in humorous situations.