Open Educational Resources (OER) are teaching and learning materials that you may freely use and reuse, without charge. Open Educational Resources are different from other resources a teacher may use in that OER have been given limited or unrestricted licensing rights. That means they have been authored or created by an individual or organization that chooses to retain few, if any, ownership rights. For some of these resources, that means you can download the resource and share it with colleagues and students. For others, it may be that you can download a resource, edit it in some way, and then re-post it as a remixed work. OER often have a Creative Commons or GNU license that state specifically how the material may be used, reused, adapted, and shared.