Bookverdict.com

Gr 3–5—An anthropomorphic beaver and snail provide a brief history of engines and 25 hands-on activities that demonstrate the concepts presented. A time line at the beginning of the text spotlights key advancements in engine engineering. An introductory chapter quickly explains the use of catapults and siege engines, the earliest steam engines, and modern engines. Subsequent chapters focus on clockwork motors, heat, electric, pneumatic, and hydraulic engines. Sprinkled throughout each chapte...Log In or Sign Up to Read More