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Open Educational Resources (OER)

Links to online open-access textbooks and other "open" educational resources.

OER Collections and Search Engines

open educational resources - book stack with plug 


There are many more collections of OER available than what we have listed on the main page of this guide. Below are a selection of well-regarded, robust OER collections. 

Judging the Quality of OER

One concern that is often raised about OER is that of quality. Faculty members are often concerned that openly available resources may be substandard or include unverified information. In order to judge the quality of OER, one can take the following into consideration:

  • Who is the author? Is information regarding author and contributors given? Are these individuals active in their fields? Do they hold verified credentials that show they are knowledgable and reliable individuals?
  • What is the institutional affiliation of authors or repositories? Is the author of an OER affiliated with a college, university, or organization? Did you discover the OER on a website that is curated by a university or educational organization or institution? 
  • Has the OER been peer-reviewed? If so, by whom? Some OER collections, such as OpenStax College and MERLOT, provide peer-review to their listed materials. In the case of MERLOT, these are individuals with "Expertise in the scholarship of their field, excellence in teaching, experience in using technology in teaching and learning, and connections to professional organizations in their discipline." Instructors can review any comments or ratings made by peer reviewers to help determine the quality of OER. 
  • Has the OER been reviewed by community members? If so, by whom? Some OER collections allow for users to provide their own reviews of listed materials. Users may include their names and institutional affiliations. By looking at reviews, you can see what others have to say about the quality and accuracy of OER content.