Robots are taking over the world! Meet some of the most amazing machines man has ever created, from battlefield 'bots to amazing androids, in "Master Engineer: Robots." Before robots existed, people imagined them. In fact, more than 500 years ago, Leonardo da Vinci sketched plans for a mechanical knight. Since then, engineers have come a long way, introducing the first modern humanoid robot, Elektro, (who could count on his fingers!) in 1939, to today's sophisticated humanoid robots that can speak, walk, do chores and more. Throughout the book, cool photographs and diagrams bring science to life, while engaging text explains the evolution of the robot. Once kids discover the engineering behind robots, they can build a giant model (three feet, two inches tall!) of a humanoid robot using the kit included with the book. Eat your heart out, C-3PO!