"Open Educational Resources (OER) are teaching, learning, and research materials in any medium- digital or otherwise- that reside in the public domain or have been released under an open license that permits no-cost access, use, adaptation and redistribution by others with no or limited restrictions." (UNESCO, 2018)
"OER" Fort Hays State University, www.fhsu.edu/oer/
"Since 1978, the cost of textbooks in the U.S. has risen 812%...Within Maryland alone, 2-year and 4-year students spend over $263 million a year in textbooks." -Maryland Open Source Textbook (M.O.S.T.) Initiative
Rajiv Jhangiani. (2020, Mar 5). Open Digital Futures: Supporting Social Justice & Pedagogical Innovation. Concordia University.