It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Open Educational Resources (OER) are teaching, learning, and research resources that are:
Created by college and university professors
Digital in a majority of cases
Free to access and use
Free to copy, share, adapt and modify, with few or no copyright restrictions (under an open licence or released to the public domain)
The last characteristic mentioned above is what differentiates OER from most copyrighted works on the Internet. There are many types of OER such as open textbooks, videos, lesson plans, interactive exercises, and tutorials.