Advocacy Instructional Materials OER Video 
Iterating Toward Openness
MARCH 21, 2023
At some point over the last decade, open educational resources (OER) advocacy in US higher education became zero textbook costs (ZTC) advocacy. The idea of “zero textbook costs” makes a kind of sense when you believe that the ideal instructional materials are books.
Iterating Toward Openness
MAY 8, 2019
The most recent issue of IRRODL included an article titled Effectiveness of OER Use in First-Year Higher Education Students’ Mathematical Course Performance: A Case Study , by Juan I. This was justified by the fact that there is a lack of empirical evidence to support expanding the use of OER. Venegas-Muggli and Werner Westermann.
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