A lot of foundational material already exist for adoption. As subject matter experts however, they are cautioned to evaluate the quality of the OER they adopt and adapt. Below is a list of ten (10) recommended OER sites, across disciplines, which can serve as a good reference point for teaching resources.
https://www.myjoyonline.com/opinion/moving-open-educational-resources-from-fringes-to-mainstream-an-unintended-consequence-of-covid-19-pandemic/
