This document summarizes a presentation given by Carl S. Blyth from the University of Texas at Austin on the affordances of openness and open educational resources (OER) for foreign language materials in the 21st century. Blyth defines OER and open education, discusses the benefits they provide to students and teachers, and addresses some of the challenges of using OER, such as lack of awareness, need for training and support, quality control, findability issues, and sustainability concerns. The presentation provides an overview of how OER can help address the rising costs of educational materials while increasing access, adaptability, and opportunities for collaboration.