The Robot Book: Build and Control 20 Electric Gizmos, Moving Machines, and Hacked Toys

This addition to the Science in Motion series takes readers through the basics of creating their own robots, often repurposing parts and motors from old toys, outdated cell phones, and more (motorized toothbrushes form the basis for several projects in a section devoted to “vibrational robots”). Step-by-step instructions, b&w photographs, and materials lists make each project manageable and clear, while “Robot Science” sections illuminate the mechanics underlying them (“You pulling on a string represents a muscle pulling on a tendon,” Mercer explains after readers have created an articulated humanoid hand using only cardboard, drinking straws, and string). It’s a solid starting point for readers with an interest in circuitry or engineering—or who simply like to take things apart to see how they work. Ages 9–up. Agent: Kathryn Green, Kathryn Green Literary Agency. (Oct.)