No Prep Sub Plans: Earth’s Rotation & Revolution | Earth-Sun Model Project | Grades 4–8 Help students explore the movements of Earth and how they shape everyday life with this engaging astronomy research and group project! Students investigate Earth’s rotation, revolution, axial tilt, seasons, moon phases, and tides while designing a model that demonstrates day/night and yearly cycles. This ready-to-use activity combines Earth science, astronomy, critical thinking, and collaboration in a forma