As teaching technical writing online becomes more widespread, teachers and scholars are identifying ways to increase teaching/learning efficacy. One way of accomplishing this goal is by continually reflecting on different types of student ethos being constructed in an online course. The changes that occur in the ethos development process can be contextualized through activity theory, which emphasizes the dynamic, evolving nature of social environments. Activity theory's focus on cultural history and tools makes it ideal for exploring active communication among multiple participants in an online technical communication environment. The triangle of human activity adapted and developed by
Engeström (1987) Engeström, Y. 1987. Learning by expanding: An activity theoretical approach to developmental research., Helsinki, Finland: Orienta-Konsultit Oy. Google Scholar] provides a framework for exploring ethos as an object within an online course's activity system.