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KMID : 1059520230670040241
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Journal of the Korean Chemical Society
2023 Volume.67 No. 4 p.241 ~ p.252
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The Effect of Classes Using the Scratch for Quasi-Microscopic Representation Approaches in Dynamic Equilibrium Learning
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Lee Seong-Jae
Kim Sung-Ki
Mei-Yao Wu
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Abstract
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This study aims to increase students' understanding of equilibrium, one of the many concepts in chemistry that students find difficult. Dynamic equilibrium must be dealt with at the sub-microscopic level where the real and the representation overlap in order to microscopically understand the constant motion and interaction of particles and to understand the macroscopic characteristics expressed through this. However, as a result of analyzing 9 Chemistry I textbooks, the expression approach for equilibrium had some limitations. As a strategy to understand equilibrium at a sub-microscopic approach, the classes using scratch were consisted of a total of 4 hours, and it was implemented with 56 students. The classes were composed of 6 steps, and it was designed to understand equilibrium step by step. As a result of comparing the pre-test and posttest, the number of students who got both the microscopic and macroscopic explanations of chemical equilibrium correct increased largely. Through this, it was possible to get a glimpse of the applicability of classes using scratch as the approach strategy of the sub-microscopic representation.
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KEYWORD
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Sub-microscopic representation, Scratch, Dynamic equilibrium, Equilibrium
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