Problem-based learning (PBL) is regarded as an effective learning strategy to enhance cognition not only in traditional learning but also in e-learning. In e-learning settings, blogs and micro-blogs can plausibly provide a platform to conduct PBL. Recently, most studies on blogs and micro-blogs have respectively probed satisfaction and learning…

Argumentative activity has been found beneficial for construction of knowledge and evaluation of information in some conditions. Many theorists in CSCL and some empiricists have suggested that graphical representations may help in this endeavor. In the present study, we examine effects of type of ontology and of synchronicity in students that…

Much has been written recently about the role of talk in content-area learning, including science learning. However, there is still much to be learned about how teachers begin to engage students in the kinds of peer-to-peer conversations that help them make sense of their investigations in science and that advance their conceptual understandings.…

The purpose of this qualitative exploratory case study was to determine the pedagogical value of Wiki technology-enhanced instruction for middle grade students. The sample consisted of three Wiki projects representative of work from 6th, 7th, and 8th grade middle school students. The examination of the data collected from the three samples of Wiki…