Discourse Patterns and Collaborative Scientific Reasoning in Peer and Teacher-Guided Discussions

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Abstract

Abstract In this study we examined the discourse components, interaction patterns, and reasoning complexity of 4 groups of 12 Grade 8 students in 2 science classrooms as they constructed mental models of the nature of matter, both on their own and with teacher guidance. Interactions within peer and teacher-guided small group discussions were videotaped and audiotaped, transcribed, and analyzed in a variety of ways. The key act of participants in both peer and teacher-guided groups was working with weak or incomplete ideas until they improved. How this was accomplished differed somewhat depending on the presence or absence of a teacher in the discussion. Teachers acted as a catalyst in discussions, prompting students to expand and clarify their thinking without providing direct information. Teacher-guided discussions were a more efficient means of attaining higher levels of reasoning and higher quality explanations, but peer discussions tended to be more generative and exploratory. Students' discourse was more varied within peer groups, and some peer groups attained higher levels of reasoning on their own. Ideas for using the results of these analyses to develop teachers' and students' collaborative scientific reasoning skills are presented.

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