Invention Hunters Discover How Machines Work - Korwin Briggs

A fun, kid-friendly introduction to simple machines, with clear explanations, diagrams, and humor. In this first book in the Invention Hunters series, the scientists explore a construction site with a young guide and discover how pulleys, cranks, and levers help power tools and machines, from jackhammers and dump trucks to toilets. Perfect for curious kids and budding engineers, this paperback also explores science, physics, and history. Mai mult