How Things Work: Discover Secrets and Science Behind Bounce Houses, Hovercraft, Robotics, and Everything in Between (National Geographic Kids)

How Things Work: Discover Secrets and Science Behind Bounce Houses, Hovercraft, Robotics, and Everything in Between (National Geographic Kids)

How Things Work: Inside Out: Discover Secrets and Science Behind Trick Candles, 3D Printers, Penguin Propulsions, and Everything in Between

The Way Things Work: Newly Revised Edition: The Newly Revised Edition-From levers to lasers, windmills to wi-fi, a visual guide to the world of machines.