KMID : 1059520100540050611
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Journal of the Korean Chemical Society 2010 Volume.54 No. 5 p.611 ~ p.620
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Exploring the Structure and the Content of Chemistry Teacher¡¯s Explanations on Gases unit of ChemistryI from the Perspective of ¡¯Persuasion¡¯
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Ko Ki-Hwan
Lee Sun-Kyung
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Abstract
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The purpose of this study was to explore the structure and content of chemistry teacher¡¯s explanations from the perspective of ¡¯persuasion¡¯. Especially, this study was to explore how the argument structure and the conceptual change constructs in chemistry teachers¡¯ explanations were established and interacted. Data were collected from chemistryI classes considering the gas unit which includes kinetic theory of gas, Graham¡¯s law, Boyle¡¯s law, and Charles¡¯ law. The classes were vediotaped and transcribed. The transcriptions were analyzed with Toulmin¡¯s argument frame and the two constructs of conceptual change model; the conceptual ecology and the status of a conception to interpret the persuasive structure and content of the teacher¡¯s explanations. As the results of this study, four explanatory discourses which show various persuasive explanations in chemistry classes. Based on this results, discussion and implications for effective teachers¡¯ explanations in chemistry classes were presented.
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KEYWORD
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Persuasion, Chemistry class, Teacher¡¯s explanation, Argument structure, Conceptual change model
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