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http://dx.doi.org/10.5012/jkcs.2018.62.3.243

A Comparison of Middle School Students' Macroscopic and Microscopic Conceptions Related to the Properties of Substances  

Lee, Jaewon (Department of Chemistry Education, Seoul National University)
Lee, Byoungjin (Department of Chemistry Education, Seoul National University)
Noh, Taehee (Department of Chemistry Education, Seoul National University)
Publication Information
Journal of the Korean Chemical Society / v.62, no.3, 2018 , pp. 243-252 More about this Journal
Abstract
In this study, we compared 8th graders' macroscopic and microscopic conceptions related to the properties of substances. A test for the basic particle concept and a test for the macroscopic and microscopic concepts of melting point, solubility, and density were developed and administered to 371 students. Their responses were classified into 4 categories on the bases of their understanding of the macroscopic and microscopic concepts. The proportions and characteristics of each category were also analyzed. The analyses of the results revealed that the students who understood the macroscopic concepts had various misconceptions at the microscopic level. Many students had difficulty in understanding not only microscopic concepts but macroscopic concepts. The microscopic responses of the students who did not understand the macroscopic concepts hardly corresponded with their macroscopic level responses. The students who responded correctly to the test for the basic particle concept also had difficulty in understanding the concept of the properties of substances. When they understood the macroscopic concepts, the proportions of the students who understood the microscopic concepts were high. On the bases of the results, educational implications for effective teaching and learning of concepts related to the properties of substances and for improving the future national curricular are discussed.
Keywords
Properties of substances; Macroscopic concept; Microscopic concept;
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Times Cited By KSCI : 10  (Citation Analysis)
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