Background: Learning-by-teaching is a generative learning strategy in which students are told they will have to teach what they are learning to others. Although learning-by-teaching has been shown to be effective in some cases, few studies have established guidelines for how to optimize the benefits of learning-by-teaching as a generative learning…

The cognitive theory of multimedia learning (CTML) describes a set of empirically tested principles that technical and professional communication research largely acknowledges as important to the design of presentation slides. However, presenters often run into difficulties understanding how to apply CTML principles to contexts in which it has not…