Asynchronous online discussions (AODs) are often used to promote critical thinking in online courses; however, recent research suggests that levels of critical thinking in discussions remain low. Furthermore, there is a lack of consensus in the literature about the definition of critical thinking and many of the existing studies focus on one…

This article reports on a case study conducted to examine the instructional strategies utilized, teacher and student attitudes, and student achievement when a sixth-grade teacher and her 19 students implemented a hypermedia, problem-based learning unit. Results revealed that the teacher used questioning, peer support, group and individual…