Open Educational Resources (OER) are teaching and learning materials that you may freely use and reuse at no cost, and without needing to ask permission. Unlike copyrighted resources, OER have been authored or created by an individual or organization that chooses to retain few, if any, ownership rights.
In some cases, that means you can download a resource and share it with colleagues and students. In other cases, you may be able to download a resource, edit it in some way, and then re-post it as a remixed work. How do you know your options? OER often have a Creative Commons license or other permission to let you know how the material may be used, reused, adapted, and shared.
ISKME: ISKME is an independent, education nonprofit whose mission is to improve the practice of continuous learning, collaboration, and change in the education sector. Established in 2002, ISKME conducts social science research, develops research-based innovations, and facilitates innovation that improves knowledge sharing in education. Based in Silicon Valley’s Half Moon Bay, California, ISKME supports innovative teaching and learning practices throughout the globe, and is well-known for its pioneering open education initiatives. ISKME also assists policy makers, foundations, and education institutions in designing, assessing, and bringing continuous improvement to education policies, programs, and practice. As such, ISKME helps schools, colleges, universities, and the organizations that support them expand their capacity to collect and share information and create open knowledge-driven environments focused on learning and success.
OER Commons allows you to search for OER resources by subject and education level. You can post materials here as well.
You can use these tools for searching:
Lumen: With Lumen you can access textbooks and course materials. Lumen offers a paid service for helping instructors manage OER resources, but you can browse the course materials for free.