Definition and explanation of core concepts of thermodynamics in physics textbooks according to the 2015 revised science curriculum

초록

The purpose of this study is to identify the characteristics of the thermodynamic concepts presented in the physics textbooks according to the 2015 revised science curriculum and to draw implications for physics teaching. For this purpose, we analyzed the thermodynamic contents related to the laws of thermodynamics in 13 kinds of physics textbooks in terms of the types of definitions and the explanations of related terms. The results of this study are as follows: First, ‘internal energy’, ‘first law of thermodynamics’, and ‘thermal efficiency’, which are content elements of the curriculum, were defined in all textbooks, but other terms were used without definition in some textbooks. Second, many terms were differently defined or had mixed definitions. Third, the results that the first law of thermodynamics was expressed as Q = ∆U + W and the second law of thermodynamics was presented as the Calvin-Planck statement showed that the thermodynamics contents were described mainly by using the heat engine. © 2019 The Korean Physical Society. All rights reserved.

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