Learning Objects sources include wikis, lesson plans, short videos, software, and other tools. Each source offers different search capabilities and conditions of use vary.
| Source | Description |
|---|---|
 | Large collection of OER supported by ISKME |
 | UC Davis Chemistry textbook on a Wiki platform |
 | Hosted by the California State University System, one of the oldest sources (1997) of OER |
 | A searchable source of digitized primary sources held in the U.S. National Archives |
 | Boundless creates texts based on Creative Commons licensed material. The supporting materials, e.g. quizzes, lesson plans, are licensed as a subscription service. |
 | A rich and growing source of Open Access video, images, texts, web ephemera--invaluable resource for all instruction areas |
 | The National Science Digital Library is a catalog of instructional materials for many levels of student; project funded by the National Science Foundation, maintained by UCAR staff |
 | Developed as an open source answer to Pearson's MyMathLab. |
 | Growing collection of open online courses with supporting materials in STEM, as well as language and social science. |
 | Lumen Learning is a non-profit company producing open courses. To access the modules a free account with Canvas is needed. |
 | Open Physics educational resources; supported by NSDL. |
 | The National Center for Case Study Teaching in Science at the University at Buffalo supports the development of case teaching in the sciences. |
 | Advanced Distributed Learning of the Department of Defense hosts a Creative Commons licensed repository of 3D models |
 | Started by ADL this repository is a rich source of learning objects with Creative Commons licensing. |
 | Mathematics Commons hosts instructional materials for primary to post-secondary courses. |