The purpose of this research was to examine differences between students at high and low levels of interactions, their perceived online presence (teaching, cognitive, and social), and the level of actual cognitive presence in asynchronous case-based discussions. The results revealed that among three online presences, teaching presence was the…

With the development of technology and the normalization of COVID-19 pandemic prevention and control, asynchronous online learning is becoming popular. However, it is still to be explored on how to enhance students' learning engagement and knowledge construction. Based on this, we used content analysis to explore the roles of teaching strategies…