The Mighty Machines series. Mighty machines in full color for the kids who love them. In the Mighty Machines series, vivid color photographs of machines at work jump off the page. Large type describes the machines, their parts and their uses. Glossaries explain essential terms, and suggested activities add to the fun. The big format and vibrant designs make the books perfect for kids to read alone or share with a friend. With their lively designs and topics that are always a favorite with kids, these books offer popular subject matter and excellent value. Traveling down the highway, kids often see spiderlike harvesters and dust-raising tractors working in a field and wonder what these extraordinary vehicles are doing. This book shows all kinds of wheeled farm equipment at work, including: Tractors and their enormous wheels Plows Seed drills Field weeders and crop sprayers Vegetable harvesters Combine harvesters Straw balers The sport and fun of a tractor race!