State and national science standards call for teaching elementary students about day/night cycles, seasons, and the phases of the moon. As educators, we must find ways to make this content meaningful and accessible for young students. This is no small task, as these phenomena have fascinated mankind for thousands of years! In this six-week course, participants will learn how to use scientific inquiry to foster exploration?and ultimately understanding?about the movements of the earth, moon, and sun. This course is written from an inquiry standpoint; therefore, participants will work to construct their own knowledge about natural phenomena (through the use of shadow trackers and moon journals) as they learn how to integrate inquiry strategies into classroom instruction. Specific content knowledge, such as learning the reason for day/night cycles, phases of the moon, and the reasons for seasons are integrated into this course. Likewise, participants will learn how to facilitate inquiry-based learning in their classroom, from thinking about why inquiry is important to posing questions that promote discovery. Content-rich articles, video clips, and online resources will form the background of the course; and asynchronous discussion boards will promote participant interaction, communication, and learning. Participants will be expected to complete and submit a Final Product by the end of the course.