전지의 연결방법에 따른 전류의 특성에 대한 초등교사들의 이해도 향상 프로그램 개발 및 적용

Abstract

The purpose of this study is to develop the elementary teachers' teaching professionalism through improving content knowledge on the characteristics of currents according to the connection methods of batteries. The theoretical basis of this study is the conclusion of Hyun's research(2010). His research showed that the relation of the relative magnitude of load resistance and the internal resistance of a battery can determine the characteristics of the currents in electric circuits with a series or a parallel connection of batteries. Therefore, this study is divided into two parts. First, the understanding improvement program for elementary teachers about the characteristics of currents according to the connection methods of batteries was developed. The contents of program is based on the misconceptions appeared in the survey results of elementary school teachers' understanding on the characteristics of currents according to the connection methods of batteries. The program was constructed to do an experiment on the size of currents according to the connection methods of batteries proposed the elementary school science textbooks and then inquire out why the results did not well come out. It was also constructed to generalize naturally from the level of phenomena to the level of realizing the cause and specific cause on the characteristics of currents according to the connection methods of batteries. Worksheet development framework was based on Driver's conceptual change model which was effective for the change of misconception. Second, the understanding improvement program for elementary teachers about the characteristics of currents according to the connection methods of batteries is intervened to 15 of elementary school teachers. The teachers were divided into five small groups, each small group was composed of three teachers. Each group implemented the program for three hours. The teachers were tested the questionnaire on the characteristics of current according to connection of batteries before and after the program conducting. The conceptual changes of elementary school teachers on the characteristics of currents according to the connection methods of batteries were investigated and were analyzed by quantitative and qualitative methods. As the results of the analysis on the degree of understanding and the level of the concept through pre and post test, the understanding improvement program for elementary teachers about the characteristics of currents according to the connection methods of batteries was effective to improve teachers' quantitative and qualitative concept. The results of this study may be used to develop program of teaching professionalism related to electricity and magnetism for the elementary teachers and secondary science teachers and make new science textbooks.