This text provides a blueprint for high-school science teachers who want to bring the laser into their classrooms. The book is also recommended for first- and second-year college students. Requiring only a low-cost, low-power laser, it presents a series of experiments exploring the interaction of light with matter for in-class demonstrations or student activities. Quick-reference instructions help the reader identify needed equipment, follow recommended safety practices and select desired experiments, each of which is rated according to conceptual and experimental difficulty.