How the Human Body Works

This engaging, hands-on, fold-out book takes readers on an exciting trip inside the human body. Children can learn fascinating facts about the body's organs, systems, and much more. How many muscles are there in the human body? Why do people have different hair, skin, and eye colors? Why do we cough? Lift the flaps, play the board game, and assemble the mega puzzle to learn all about the human body!