Open Educational Resources (OER) are teaching, learning, and research materials that are either (a) in the public domain or (b) licensed in a manner that provides everyone with free and perpetual permission to engage in the 5R activities for educational purposes: Retain, Reuse, Revise, Remix, and Redistribute.
Some free resources, such as Google Books or HathiTrust, may appear to be open. Because they require licensing or a paid subscription by the institution to access in full, they are considered paid resources.
The resources included in this guide are free to access and use, and vary from course material aggregators to specific textbooks.
To find material from off-campus, consider the following: