Open Educational Resources (OER) are "teaching, learning, and research resources that reside in the public domain or have been released under an intellectual property license that permits their free use and re-purposing by others."
OER include digital learning materials such as:
open textbooks | courses | syllabi | lectures | assignments | quizzes | lab activities | games | simulations
Learn more: What is OER?
There are many reasons instructors might want to use OER:
A recent Florida Virtual Survey<http://www.openaccesstextbooks.org/pdf/2016_Florida_Student_Textbook_Survey.pdf> of over 22,000 students found that 66.5% of students did not purchase the required textbook / course materials solely due to cost. Just yesterday, Inside Higher Ed<https://www.insidehighered.com/digital-learning/article/2018/07/16/measuring-impact-oer-university-georgia?utm_source=Inside+Higher+Ed&utm_campaign=e3f54e4e71-DNU_COPY_01&utm_medium=email&utm_term=0_1fcbc04421-e3f54e4e71-197454733&mc_cid=e3f54e4e71&mc_eid=857a64156f> shared how the University of Georgia has saved students 3.2 million in textbook cost since 2013 by utilizing OER. In addition, they found that switching to OER increased the number of A and A-minus grades students received by 5.50 percent and 7.73 percent, respectively. The number of students who withdrew or were awarded D or F grades (known as the DFW rate) fell by 2.68 percent.