WCC met its “20 by 2020” goal to develop and provide open educational resources, or OERs, in place of textbooks for 20 courses. OERs are free, publicly accessible and openly licensed media—including print and digital materials—that can serve as an alternate or enhancement to traditional, usually commercially produced, media.
https://www.washtenawvoice.com/2019/11/19/open-educational-resources-save-students-2-8-million/