Humans have been inventing tools and machines for a long time. This wonderful, high-interest book presents concepts about both simple and complex machines in comic-book format. Readers learn key, at-level ideas about engineering and technology through silly illustrations, funny captions, and interesting real-world examples about drones, GPS, robotics, bicycles, and more. A quiz at the end reviews essential points in the accessible text, allowing readers to self-evaluate their understanding.