Developmental research and educational practice involve conversations between children and adults. The conversational aspects of these situations have rarely been occasions for reflection. Discrepancies between the child's expectations and the adult's intentions can lead to misunderstanding, for example, at school or during a research interview.…

In this paper we focus on the role of signs in students' perceptive processes underpinning the generalization of numeric-geometric patterns. Based on a videotaped Grade 9 classroom group activity undertaken by three students and framed by a cultural-semiotic theoretical perspective, we carry out a microgenetic analysis of an elementary form of…

The authors investigated the microlevel processes of collaborative reasoning in heterogeneous peer dyads working on an open-design task in elementary geometry. Special attention was paid to the nature of student social interaction, problem-solving strategies, and mathematical language and how they shape collaborative problem-solving processes.…