'Taking part' in conversations requires different activities from the interactants depending on the kind of conversation. This article investigates co-constructions in oral peer group discussions of elementary school children from grades 2 to 6 (7-12 years old). Although dissent is the starting point of argumentations, negotiating processes in…

Argumentation in science involves offering and responding to claims, providing and asking for evidence or justifications, and analyzing those claims to formulate a decision (Gross 1990). The authors' experience with students, including those who are English learners, suggests that many young science students benefit from language frames to…