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Science Teachers' Perception of the Refractive Index of Media

굴절률에 대한 과학교사들의 인식

  • Park, Sang-Tae (Department of Physics Education, Kongju National University) ;
  • Yeom, Jun-Hyeok (Department of Physics Education, Kongju National University) ;
  • Yoon, Yeo-Won (Department of Physics Education, Kongju National University) ;
  • Seok, Hyojun (Department of Physics Education, Kongju National University)
  • 박상태 (공주대학교 물리교육과) ;
  • 염준혁 (공주대학교 물리교육과) ;
  • 윤여원 (공주대학교 물리교육과) ;
  • 석효준 (공주대학교 물리교육과)
  • Received : 2017.08.16
  • Accepted : 2017.09.15
  • Published : 2017.12.25

Abstract

This research aims at investigating science teachers' perception of the refractive index of materials, and thus achieving proper information transmission and teaching of refractive index. Specifically, we have made questionnaires on what physical factors influence the refractive index of a liquid easily available in secondary schools. It was found that 80.0% of science teachers perceived that the density has the greatest influence on the refractive index, among a variety of factors such as molecular structure, the number of molecules per unit volume, mass of each molecule, and the wavelength of light, to mention just a few. This may be due to the fact that current textbooks deal with the refraction of light based on analogy to a mechanical wave. Such a misunderstanding may lead to confusion and misunderstanding for students.

본 연구는 과학교사를 대상으로 물질의 굴절률에 대한 인식을 조사하여, 굴절률에 대한 올바른 정보 전달과 수업 지도의 시사점을 주는데 그 목적이 있다. 구체적으로 설문지를 제작하여, 현장에서 구하기 용이한 액체들의 굴절률에 영향을 주는 요인들에 대한 교사들의 인식을 조사하였다. 연구 결과 분자의 구조, 단위 부피당 분자 수 및 분자의 질량, 빛의 파장 등 다양한 요인들 중, 과학 교사들의 80.0%는 밀도가 굴절률에 가장 크게 영향을 미칠 것이라고 인식하는 것으로 나타났다. 이는 기존의 교과서에서 빛과 역학적 파동의 유사성에 기초하여 굴절을 설명하는 것에 의해 발생한 오개념으로, 과학교사들의 이러한 인식은 학생들에게 오개념을 심어줄 가능성이 크다.

Keywords

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