On nearly every construction site, cranes are hard at work lifting heavy materials. The largest cranes are used to build skyscrapers and oil rigs while smaller gantry cranes can help factory workers move heavy boxes from place to place. In this informative, approachable text, young readers will discover different types of cranes and how workers use them every day. With full color photographs, young readers will see cranes up close and learn about

Earthmovers are used on construction sites and to build roads every day, but what is an earthmover? Bulldozers, wheel loaders, and dump trucks are just some of the amazing mega machines young readers will discover in this text. With the ability to move, scrape, and flatten dirt, each mega machine has an important dirty job to do, and they do it well! With stunning photographs and informative, approachable text, young readers will learn more about

Submarines are underwater ships used by militaries around the world. This mega machine can be over 550 feet long and can carry up to 160 crew members on board. The fastest submarine, the Soviet submarine K-222, can reach speeds of over 50 mph! Young readers will love learning about this underwater mega machine. With approachable, informative text paired with full color photographs of submarines, readers will discover how submarines work and what