교사들의 진화 개념 이해 향상을 위한 논변활동 프로그램 효과 분석
Analyzing the Effect of Argumentation Program for Improving Teachers' Conceptions of Evolution
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초록
이 연구는 생명과학교사들의 진화개념 향상을 위한 논변활동 프로그램을 개발하고 이를 교사교육에 적용하여 진화개념에 대한 논변활동 특성을 분석함으로써 효과를 알아보고자 하는 것이었다. 이를 위해먼저 진화를 이해하는데 필요한 주요 개념들을 문헌 조사를 통해 추출하여 ‘변이’, ‘변이의 유전’, ‘경쟁’, ‘자연선택과 적응’, ‘차등적 생식력’, ‘개체군 내 개체분포의 변화’, ‘대진화’를 주요개념으로 선정하였고, 각각의 개념에 대한 논변활동 질문지를 개발하였다. ADI모형을 변형한 7단계로 이루어진 순환적 논변활동 학습모형도 개발하였다. 총 7회에 대학원 교과교육 수업에 적용하였다. 현직 생명과학교사 4명과 예비 생명과학교사 2명을 대상으로 남, 여 3명씩 두 개의 소집단으로 구성하여 논변활동을 진행하였다. 프로그램이 진행되는 동안 녹음을 통한 담화와 논변글쓰기의 자료를 수집하여 분석하였다. 논변글쓰기는 ‘설명의 충분성’, ‘설명의 개념적 수준’, ‘증거의 수준’, ‘정당화의적절성’의 4가지 범주를 기준으로 논변의 질 수준을 분석하여 사전사후에 진화개념의 변화 정도를 확인하였고, 담화분석을 통해 진화주요개념에 대한 논변활동 특성을 분석하였다. 논변글쓰기와 담화를 분석한 결과 개발된 논변활동 모형과 프로그램은 생명과학교사들의 진화개념 이해 향상에 효과적이었다. 이 연구는 논변활동을 통한 교수학습 전략이 생명과학교사교육을 위한 효과적인 진화개념학습 전략이될 수 있음을 보여주었다.
Abstract
This study aims to develop biology teachers' education program based on argumentation activity about core concepts of evolution and to analyze the characteristics of core concepts of evolution learned during the program. The eight core concepts of evolution in this study were variation, heritability of variation, competition, natural selection, adaptation, differential reproductive rate of individuals, changes in genetic pool within a population, and macroevolution. The performances of teachers participating in the program were compared before and after argumentation activities; consisting of seven sessions on the eight core concepts of evolution. The process of the program was specially designed by learning cycle model for teacher education, consisting of seven phases: identification of the task, production of a tentative argument, small group’s written argument, share arguments with the other groups, reflective discussion, final written argument, and organization by an instructor. Participants in the study were two pre-service biology teachers and four in-service biology teachers. The results suggest that biology teachers reduced the teleological explanation for biological evolution and improve its adequacy after the intervention. Teachers lacked the opportunity to discuss variation, heritability of variation, competition, and macroevolution because science textbooks lack information on the concepts of biological evolution. The results of this study suggest that because the argumentation program developed for teachers helps to improve understanding the concepts of evolution and to reduce inadequate conceptions in biology, teacher education programs using argumentation activity and eight core concepts of evolution will play a role for efficient evolution education for biology teachers.
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