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http://dx.doi.org/10.5467/JKESS.2022.43.6.762

Conceptual Structure Analysis of Metamorphic Rock by Earth Science Teachers Using Semantic Network Analysis  

Duk Ho Chung (Division of Science Education/Science Education Institute, Jeonbuk National University)
Chul Min Lee (Division of Science Education/Science Education Institute, Jeonbuk National University)
Publication Information
Journal of the Korean earth science society / v.43, no.6, 2022 , pp. 762-776 More about this Journal
Abstract
The purpose of this study was to determined the conceptual structure used by earth science teachers to classify metamorphic rocks as well as the criteria applied in the process of classifying metamorphic rocks. To this end, the researchers collected verbal data uttered in the process of classifying metamorphic rock using think-aloud from 21 earth science teachers in middle and high schools in Jeollabuk-do, Republic of Korea. The collected verbal data were analyzed using the semantic network analysis method, and the following results were obtained. First, in the process of classifying metamorphic rocks, earth science teachers classified them based on characteristics such as color, compositional minerals, and particle size, which can be generally observed in rocks, and foliation that appears in metamorphic rocks. Second, earth science teachers recognize the classification criteria for metamorphic rocks and focus on metamorphism such as contact metamorphism or regional metamorphism. However, there were cases where rocks were mistakenly classified through incorrect identification. Therefore, it is necessary to provide sufficient observational information about, and experience of, metamorphic rocks to enable earth science teachers to recognize and relate to the scientific process of identifying metamorphic rocks through the phenomena observed.
Keywords
classification of metamorphic rock; earth science education; semantic network analysis; conceptual structure;
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