Ceceri-s cartoon-illustrated activity book, an addition to the Build It Yourself series, introduces readers to robotics, with information on its history, different robot technologies, and the evolution of the field. Readers are invited to construct their own basic robots, including a pressure sensor that uses an LED light bulb, a watch battery, and aluminum foil; and a model solenoid (used in devices like car door locks), which requires a battery, insulated wire, drinking straws, and other materials. Light in tone but dense with information, this guide should appeal to those who already have a strong interest in the topic and are ready for a hands-on challenge. Ages 9-12. (Aug.)