Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Analysis of the Conceptual Understanding of In-service and Pre-service Earth Science Teachers about 'Stellar Evolution'

현직 및 예비 지구과학교사의 '별의 진화'에 대한 개념 이해 분석

  • Ha, Min-Kyoung (Department of Earth Science Education, Korea National University of Education) ;
  • Sohn, Jungjoo (Department of Earth Science Education, Korea National University of Education)
  • 하민경 (한국교원대학교 지구과학교육과) ;
  • 손정주 (한국교원대학교 지구과학교육과)
  • Received : 2019.10.06
  • Accepted : 2019.10.29
  • Published : 2019.10.31
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Abstract

This study analyzes the conceptual understanding of in-service and pre-service earth science teachers about the H-R diagrams and evolution of stars using conceptual status analysis categories. The results show that (a) many teachers use unscientific language in the Intelligibility range, (b) teachers are categorized in Low scientific inquiry ability related to graph creation and unscientific analogy for scientific concept which is hightly corelated to the possibility of misunderstanding in the teaching process, and (c) pre-service teachers lack the understanding of the secondary science curriculum. It is necessary to develop pre-service curriculum that can be applied to the school site. In the category of Plausibility range, (d) both groups understood the cosmological meaning of stellar evolution. However, pre-service teachers do not specifically explain the mechanism of a star. In the category of Fruitfulness range, in-service teachers come up with educational problems reflecting the academic characteristics of earth science and apply their knowledge to actual problem solving. On the other hand, pre-service teachers show high nonresponse ratio, they do not see the H-R diagram and the evolution of stars as a practical concept. In the analysis process, both groups are found to have many unscientific conceptions about the H-R diagram and evolution of stars. Therefore, it is suggested that caution be used in developing a professional development program of earth science teachers.

본 연구는 현직 및 예비 지구과학교사의 H-R도와 별의 진화에 대한 개념 이해 상태를 알아보기 위해 개념 지위 분석틀을 활용하여 수행하였다. 이해 가능성 영역에서 현직교사의 비과학적 용어 사용이 다수 발견되었고, 그래프작성에서 낮은 과학적 탐구 능력과 개념에 대한 비과학적 비유가 발견되어 교수 과정에서 잘못된 개념 전달의 가능성이 확인되었다. 예비교사는 중등교육과정 연계 문항에서 다수의 오류를 보였으며, 이와 관련하여 학교 현장에 적용이 더 잘 될 수 있도록 예비교사 교육 과정의 개선이 필요하겠다. 개연성 영역에서, 두 집단 모두 별의 진화가 갖는 우주론적 의미를 이해하고 있었으나, 예비교사의 별의 실제기작에 대한 설명이 구체적이지 않았다. 유용성 영역에서, 현직교사는 지구과학의 학문적 특성을 반영한 교육적 고민을 하고 있었고, 지식을 현실 문제해결에 활용, 적용하려는 경향이 높았다. 반면, 예비교사는 높은 무응답률을 보여 H-R도와 별의 진화를 실용적 개념으로 파악하지 않는 것으로 확인되었다. 결과적으로, 두 집단 모두에서 H-R도와 별의 진화에 대한 비과학적 개념이 다수 발견되어 교사 교육 및 교수 학습 계획 수립 시 주의가 필요함을 확인할 수 있었다.

Keywords

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