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Related Conception s to Earth System and Applying of Systems Thinking about Carbon Cycle of the Preservice Teachers  

Jeong, Jin-Woo (Department of Earth Science Education, Korea National University of Education)
kyung, Jai-Bok (Department of Earth Science Education, Korea National University of Education)
Koh, Yeong-Koo (Department of Earth Science Education, Cheongwon National University)
Youn, Seok-Tae (Department of Earth Science Education, Cheongwon National University)
Kim, Hai-Gyoung (Department of Earth Science Education, Gwangju National University of Education)
Oh, Kang-Ho (Department of Earth Science Education, Cheongwon National University)
Moon, Byoung-Chan (Department of Earth Science Education, Korea National University of Education)
Publication Information
Journal of the Korean earth science society / v.25, no.8, 2004 , pp. 684-696 More about this Journal
Abstract
Using six preservice teachers as subjects, this was purpose to research about concepts in understanding carbon cycle, which of concepts were related to the conception of the system, and finally whether or not the systems thinking was sufficiently around carbon cycle. To achieve this study purpose , an instrument related to carbon cycle was developed and administered to the six teachers. The study found that a total of 42 conceptions within the system were concepts related to carbon cycle. The consisted of 15 conceptions in atmosphere, 11 in atmosphere 9 in hydrosphere, and 7 in lithosphere. In aspect of applying the system thinking, 4 subjects who couldn't compose the feedback loop in their causal map failed to apply this type of thinking. The other two who applied systems thinking had 2 and 1 feedback loop each, in their causal maps. But, one of the feedback loop from the subject who made two was based on unscientific reasoning. As a result, the subjects had lower understanding of concepts related to carbon cycle in lithosphere than in atmosphere, atmosphere, and hydrosphere. Futhermore, the subjects' application of the earth systems thinking on carbon was at a low standard.
Keywords
systems thinking; carbon cycle; earth system;
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