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

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

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

How Things Work: Then and Now