This resource from Annenberg Learner is a welcome find for K-6 educators looking to boost their content knowledge in Earth and Space Science. Over eight sessions, participants are provided the opportunity to become better informed of students' science conceptions and develop new understandings of how this content can be integrated into classrooms. After browsing the Homepage, Course Overview, and Course Structure, interested readers can dive right in. Each Session provides helpful information, via videos, text, and visuals, on a range of topics, such as the Earth's Solid Membrane: Soil (Session 1) and a Journey to the Earth's Interior (session 3). Along the way, readers may click on A Closer Look, Children's Ideas, and Featured Classroom links to fill out the experience. While this site is designed for classroom teachers, the information and presentation make it interesting for anyone who wants to refresh their basic knowledge of our planet.