This paper reports on a project started in 1993 to provide preservice teachers with opportunities to engage in an extended conversation with a middle school student using a computer and a modem. The Apple Computer Co. donated the initial equipment to the College of Education at Wayne State University and to the Detroit Open School, Detroit Public…

Computer-mediated social learning contexts have become increasingly popular over the last few years; yet existing models of students' cognitive-affective states have been slower to adopt dyadic interaction data for predictions. Here, we explore the possibility of capitalizing on the inherently social component of collaborative learning by using…

This research evaluates the psychometric properties of short-answer response items under a variety of grading rules in the context of a mobile learning platform in Africa. This work has three main findings. First, we introduce the concept of a differential device function (DDF), a type of differential item function that stems from the device a…