초파리 유전 실험 결과 해석에서 보인 중학교 과학영재들의 설명모형 탐색
Exploring Science-Gifted Middle School Students' Explanatory Models for Interpreting Data from Drosophila Breeding Experiments
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초록
The purpose of this study is to explore explanatory models of science-gifted middle school students for interpreting data from Drosophila breeding experiments. Small group discussions of science-gifted students were recorded and transcribed. The results of this study reveal that the students showed four types of alternative explanatory models that consisted of (1) a list of fragmented genetic con- ceptions, (2) conceptions of genes without chromosomes, (3) conceptions of genes and chromosomes without gene loci, and (4) conceptions of the relation between genes and chromosomes without differentiating sex chromosomes from autosomal ones. Conceptual scheme of Gene-Chromosome Explanatory Model was drawn based on the traits of students’ alternative explanatory models. It can be used to identify various alternative models that students may have while learning genetics, and help students to develop scientific models.
Abstract
The purpose of this study is to explore explanatory models of science-gifted middle school students for interpreting data from Drosophila breeding experiments. Small group discussions of science-gifted students were recorded and transcribed. The results of this study reveal that the students showed four types of alternative explanatory models that consisted of (1) a list of fragmented genetic con- ceptions, (2) conceptions of genes without chromosomes, (3) conceptions of genes and chromosomes without gene loci, and (4) conceptions of the relation between genes and chromosomes without differentiating sex chromosomes from autosomal ones. Conceptual scheme of Gene-Chromosome Explanatory Model was drawn based on the traits of students’ alternative explanatory models. It can be used to identify various alternative models that students may have while learning genetics, and help students to develop scientific models.
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