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The Elementary School Teachers' Thoughts of the Classification Criteria for Evaporation and Boiling Concept in the Heating and Non- Heating Conditions

가열과 비가열 상황에서 증발과 끓음 개념에 대한 초등교사들의 분류 기준에 대한 생각

  • Paik, Seoung-Hey (Department of Chemistry Education, Korea National University of Education) ;
  • Kim, Yang Ah (Department of Chemistry Education, Korea National University of Education)
  • 백성혜 (한국교원대학교 화학교육과) ;
  • 김양아 (한국교원대학교 화학교육과)
  • Received : 2014.04.02
  • Accepted : 2015.05.16
  • Published : 2015.08.31

Abstract

The purpose of this study was to survey the elementary school teachers' thoughts of the classification criteria for evaporation and boiling concept in the heating and non-heating conditions. For this purpose, we conducted a survey and interviews with 37 elementary school teachers. When the heating conditions were presented, many teachers thought evaporation phenomena as boiling. In opposite condition, many teachers thought boiling phenomena as evaporation. This means that teachers‘ thought of boiling phenomena was connected with heating conditions and evaporation phenomena with non-heating conditions. In addition, the classification criteria to distinguish evaporation and boiling phenomena depending on the heating and non-heating conditions were not coherent. In this study, we suggested that a various cases beyond the typical case must be presented in the textbooks and teaching in order to avoid confusion of thoughts related to evaporation and boiling concepts.

Keywords

Evaporation;Boiling;Heating situation;No heating situation;Elementary school teacher

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