Judith Pena-Shaff (Psychology) and William Altman (Broome Community College) published an article in the Journal on Excellence in College Teaching. The article, Case-based instruction using asynchronous online discussions: A synthesis (2009)" describes the implementation of a teaching strategy combining case-based instruction (CBI) and asynchronous online discussions in two large educational psychology classes.
https://www.ithaca.edu/intercom/article.php/2009102609345449