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Analysis of Secondary School Students' System Thinking on the Cycle of Matter in Earth System: Considering the Impact of Human Activity on the Cycle

지구 시스템 내 물질 순환에 대한 중·고등학교 학생들의 시스템 사고 분석: 인간의 활동이 순환에 미치는 영향을 고려하여

  • Received : 2021.09.28
  • Accepted : 2021.12.08
  • Published : 2021.12.31

Abstract

The purpose of this study is to analyze the level and characteristics of system thinking of middle and high school students on cycle of matter in the Earth system considering the impact of human activities on the cycle. For this purpose, we developed items for assessment and assessment rubric through the analysis of 2015 revised curriculum and applying systems thinking, respectively. Middle and high school students who participated in the Korea Earth Science Olympiad were the subjects of this study. The level of system thinking was determined using the assessment rubric for student responses collected using items for assessment. The characteristics of system thinking were identified using word analysis. Based on these, the improvement of the curriculum considering the impact of human activities was discussed. The results of the study are as follows: first, the system thinking level of most secondary school students was low in identifying or classifying system elements for matter cycle, and high levels, such as system relationship or generalization of patterns, were found to be relatively small. It was found that students had a higher level of system thinking in the carbon cycle than in the water cycle. Second, in terms of the characteristics of system thinking about water cycle, water was recognized as a major system element and mainly related with evaporation between atmosphere and other system elements. Whereas, in the carbon cycle, carbon dioxide was regarded as a major system element, and photosynthesis and respiration were represented in relation with the biosphere. Third, for education considering the impact of human activities on the matter cycle in the Earth system, it is proposed improving the curriculum considering the socio-ecological system by extending the existing earth system.

이 연구의 목적은 인간 활동의 영향을 고려하여 지구 시스템 내에서 물질 순환에 대한 중·고등학생들의 시스템 사고의 수준과 특성을 분석하는 것이다. 이를 위해 2015 개정 교육과정 분석을 통해 평가 문항을 개발하였으며, 시스템 사고를 적용하여 평가 루브릭을 개발하였다. 한국 지구과학 올림피아드에 참여한 중·고등학생을 연구 대상으로 하였다. 평가 문항을 이용하여 수집된 학생 응답을 평가 루브릭을 이용하여 시스템 사고 수준을 결정하였으며, 단어 분석을 이용하여 시스템 사고의 특성을 파악하였다. 이를 토대로 인간 활동의 영향을 고려한 교육과정 개선을 논의하였다. 연구 결과는 다음과 같다: 첫째, 대다수 중등학교 학생의 시스템 사고수준이 물질의 순환에 대한 시스템 요소를 확인하거나 분류하는 낮은 수준이었으며, 시스템 연관이나 경향의 일반화와 같은 높은 수준은 상대적으로 적은 비율인 것으로 나타났다. 물의 순환보다 탄소의 순환에서 학생들의 시스템 사고 수준이 높은 것으로 나타났다. 둘째, 물질 순환에 대한 시스템 사고의 특성은 물의 순환에서는 물을 주요 시스템 요소로 인지한 상태로 기권과 다른 시스템 요소 간에 주로 증발로 연관을 나타내고 있었다. 탄소의 순환에서는 이산화 탄소를 주요 시스템 요소로 간주하여 생물권과의 연관으로 광합성과 호흡을 표상하고 있었다. 셋째, 지구 시스템 내 물질의 순환에서 인간 활동의 영향을 고려한 교육을 위해서 기존의 지구 시스템에서 확장하여 사회-생태 시스템을 고려한 교육과정의 개선을 제언하였다.

Keywords

Acknowledgement

이 논문은 2018년도 강원대학교 국립대학 육성사업비로 연구하였음.

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