"Lecture-Tutorials for Introductory Astronomy, 3rd Edition" by Edward E. Prather is an educational resource designed to enhance the understanding of key concepts in introductory astronomy courses. This edition features a series of interactive tutorials that encourage active learning and critical thinking, allowing students to engage with complex topics through collaborative discussions and problem-solving activities. The tutorials cover a range of subjects, from celestial mechanics to the nature of light, aiming to deepen students' comprehension and foster a more meaningful connection with astronomical concepts. By integrating these tutorials into traditional lectures, educators can create a more dynamic and effective learning environment.