KMID : 1059520210650010037
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Journal of the Korean Chemical Society 2021 Volume.65 No. 1 p.37 ~ p.47
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Analysis of Cognition Levels related to Acid-Base Models in High School Science-Gifted Students
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Ryu Eun-Ju
Paik Seoung-Hey
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Abstract
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In this study, the model cognition level of high school science-gifted students about the two types of acid-base models taught in secondary schools was analyzed. In order to find out the model cognition level of students, 12 items were developed based on the acid-base reaction and the dissociation reaction of acids and bases. The subjects of the study were 95 students of two science-gifted schools. As a result of the questionnaire analysis, model cognition levels were analyzed 6 levels in the context of consistency, inconsistency, and unexplainable scope of the two models. In the acid-base reaction item, the largest percentage of students cognized only understanding of the two models. In the acid-base dissociation reaction item, they understood the two models and perceived the ¡®Known Ignorance¡¯ that cognizes the limitations of one model. However, there was only one student who perceived the limitations of both models and all of the ¡®Unknown Ignorance¡¯ that the model could not explain. Through this, we argued that there is a need for educational efforts to raise the model cognition level of sciencegifted students.
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KEYWORD
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Acid-base models, High school science-gifted students, Model cognition level, Perception of ¡®Ignorance¡¯
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