Open educational resources (OER) are increasingly attractive options for reducing educational costs, yet controlled studies of their efficacy are lacking. The current study addressed many criticisms of past research by accounting for course and instructor characteristics in comparing objective student learning outcomes across multiple sections of…

The concept of "non-disposable assignments" (NDAs), including those referred to as "renewable assignments," has grown in popularity in recent years in select education circles, particularly alongside an enthusiastic push toward open pedagogy. Unfortunately, little organized literature exists to effectively define, implement,…