Open Educational Resources (OER) are teaching and learning materials that you may freely use and reuse at no cost. Unlike fixed, copyrighted resources, OER have been authored or created by an individual or organization that chooses to retain few, if any, ownership rights (OER Commons, CC BY-SA). The US Department of Education includes in its definition that OER are materials in the public domain (free of copyright protection) or ones that are available for use by intellectual property licenses that allow free use or repurposing by others, such as Creative Commons.
