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KMID : 1059520150590060499
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Journal of the Korean Chemical Society
2015 Volume.59 No. 6 p.499 ~ p.507
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Knowledge State Analysis of Ionic Equation for Middle School Students
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Yoon Heo-Jeong
Lee Yoon-Ha
Kim Young-Shin
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Abstract
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The purpose of this study is to investigate middle school students' understanding of ionic equation. Two hundreds and nineteen middle school students were participated in the study. After six class hours of learning 'electrolyte and ion' unit, instrument was implemented to evaluate students' understanding of ionic process and ability to write ionic equation. We analyzed the influence of characteristics of ionic compounds on correct answer rate. In addition, knowledge state of students required for writing ionic equation was analyzed. The results were as follows: First, ionic compounds tested were categorized into six groups. The correct answer rate was different depending on the characteristics of each group. Second, knowledge state required for writing ionic equation was structured. Based on results some suggestion were made to develope effective learning strategy for understanding ionic equation.
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KEYWORD
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Ionic equation, Ionic compound, Chemical formulae, Knowledge state analysis methods
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