The Teaching Commons brings together high-quality open educational resources from leading colleges and universities. The Teaching Commons includes open access textbooks, course materials, lesson plans, multimedia, and more. Educators and researchers can use the Teaching Commons to discover teaching materials, adopt content for their courses, or create and share their own work. The Teaching Commons is built on the Digital Commons platform, which offers authors a powerful set of tools-- including multimedia support, versioning, embedded comments, and geo-location. Teaching Commons shows how OERs can be used to create courses.