Communications of Mathematical Education (한국수학교육학회지시리즈E:수학교육논문집)

Korean Society of Mathematical Education (한국수학교육학회)
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Textbook analysis on the application of concave polygons in congruence and symmetrical teaching and learning

합동과 대칭의 교수학습에서 오목다각형의 활용에 대한 교과서 분석

  • Kang, Yunji (Seoul Hongyeon Elementary School)
  • 강윤지 (서울홍연초등학교)
  • Received : 2024.05.13
  • Accepted : 2024.06.08
  • Published : 2024.06.30
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Abstract

Congruences and symmetry are familiar concepts that can be encountered in everyday life. In order to effectively understand and acquire these concepts, the role of appropriate visual examples is important. This analysis examined various visual examples used in the process of learning the concepts of congruence and symmetry in elementary mathematics textbooks and focused on the use of convex polygons and concave polygons. As a result of the analysis, various types of polygons were used as visual examples for teaching and learning of congruence and symmetry in textbooks. The frequency of use of concave polygons was higher in the order of congruence, line symmetry, and point symmetry, and it was confirmed that it was used more frequently in the process of exploring properties than in the introduction of the concept. Based on these results, a plan to utilize concave polygons in teaching and learning of congruence and symmetry was sought.

합동과 대칭은 일상생활에서 접할 수 있는 친숙한 개념으로, 이러한 개념을 효과적으로 이해하고 습득하기 위하여 적절한 시각적 예시의 역할이 중요하다. 본 연구에서는 초등 수학 교과서에서 합동과 대칭 개념을 학습하는 과정에서 제시되는 시각적 예시를 살펴보았으며 오목다각형의 활용에 초점을 맞추어 분석하였다. 분석 결과, 교과서에서 다양한 형태의 다각형이 합동과 대칭의 교수학습을 위한 시각적 예시로 활용되고 있었고 합동, 선대칭도형, 점대칭도형의 순서로 오목다각형의 활용 빈도가 높게 나타났다. 또한, 개념의 도입보다 성질 탐구에서 오목다각형이 더 자주 활용되는 것을 확인하였다. 이러한 분석 결과를 바탕으로 합동과 대칭의 교수학적 시사점을 모색하였다.

Keywords

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