Teacher-led whole class discussions are essential when it comes to guiding students' construction of knowledge, and recent studies on teaching and learning emphasize the need for more student-centered teaching methods. In previous studies, the extent to which different types of communication take place in the classroom have been extensively…

Argumentation has been the emphasis of many studies during the last decade. However, previous studies have not identified why some students are more successful than others, and what are students' characteristics of argumentation, especially when working collaboratively. The purpose of this study was to identify how young students construct…

Investigates the nature of small-group social interactions in the mediation of children's science learning. Reports that the teacher mediated the children's small-group science learning through discourse that negotiated children's status, actions, and meaning, as well as through discourse that established the normative structure of the small…