The lessons in Engaging in Astronomical Inquiry reflect an innovative approach to learning astronomy by putting the student at the center of each and every lesson. Students decide what topics they want to study, create their own research questions, design their own strategies to pursue evidence, and defend their scientific conclusions based on the data collected. The student learns to think like a scientist. Requiring no equipment beyond a computer and an internet connection, this unique set of inquiry activities can be used in conjunction with any introductory astronomy text, or on its own.