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High School Students' Ideas and Analysis of Responses Types to Alternative Hypotheses about Cause of Dinosaur Extinction  

Park, Hyeong-Geun (Anyang High School)
Jeong, Jin-Woo (Korea National University of Education)
Jung, Jae-Gu (Korea National University of Education)
Publication Information
Journal of The Korean Association For Science Education / v.24, no.5, 2004 , pp. 959-976 More about this Journal
Abstract
The purpose of this study was to investigate high school students' ideas related with dinosaur extinction, to classify students' responses types with alternative hypotheses of inconsistent with their ideas, and then to examine their cognitive conflict levels and the degree of ideas change. To investigate students' ideas, we analyzed responses 98 eleventh graders of a high school in Anyang area. The results of this study were as follows: First, most of the students responded a large scale asteroid impact with the cause of dinosaur extinction, and rest of them responded changed Earth's climate accompanying tectonic activity, extreme volcanic activity, shortage of food, disease(virus) and decrease of their habitat. Also, they thought that dinosaur was exterminated not by just one reason but by several complex reasons. Second, the students' responses of alternative hypotheses were classified into six types: rejection, reinterpretation, uncertainty, belief decrease, partial theory change, and theory change. Third, except rejection and reinterpretation types, other four types were arousing of cognitive conflict and the percentage of the students who felt cognitive conflict was 62.3% and that of the students who took the theory change was just 6.1 %.
Keywords
dinosaur extinction; alternative hypotheses; responses types;
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Times Cited By KSCI : 4  (Citation Analysis)
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