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다각형의 등주문제: Geometer's Sketchpad로 수학적 추론과 정당화하기

On the Isoperimetric Problem of Polygons: the mathematical reasoning and proof with the Geometer's Sketchpad

  • Choi, Keunbae (Dept. of Math. Edu., Teachers College, Jeju National University)
  • 투고 : 2018.04.25
  • 심사 : 2018.06.27
  • 발행 : 2018.09.30

초록

이 논문에서는, 영재학생들을 위한 학습 자료의 관점에서, 선행연구(최근배, 2009, 2011; 이재운, 최근배, 2015)에서 미비한 점이 있는 짝수 각형의 등주문제를 해결하는 과정을 Geometer's Sketchpad로 추론하고 정당화하는 아이디어를 논의하고 있으며, 주된 아이디어는 두 가지의 변형([그림 III-1]과 [그림 III-3])을 사용하는데 나타나는 수학화의 과정이다. 여기에 사용된 아이디어는 제주대학교 영재교육원 수학반 심화과정 프로그램 (등주문제 또는 디도여왕의 문제, 2004년부터 현재까지) 운영 중에 도출된 것이다.

In this paper, we deal with the isoprimetric problem of polygons from the point of view of learning materials for elementary gifted students. The isoperimetric problem of the polygon of odd degree can be solved by E-transformation(see Figure III-1) and M-transformation(see Figure III-3). But in the case of even degree's polygon, it is quite difficult to solve the problem because of the connected components of diagonals (here we consider the diagonals forming triangle with two adjacent sides of polygon). The primary purpose of this paper is to give an idea to solve the isoperimetric problem of polygons of even degree using the properties of ellipse. This idea is derived from the programs of the Institute of Science Education for Gifted Students in the Jeju National University.

키워드

참고문헌

  1. Kang, M. B. et el., Understanding of Elementary Mathematics Education, Kyungmoon Press. Seoul.
  2. Lee, K. Y. (1998). A Study on the Isoperimetric Problems, Graduate School of Education, SungKyunKwan University
  3. Lee, Jaeun & Choi, Keunbae. (2015). 다각형의 등주문제에서 등각의 문제 고찰, East Asian Math. J. 31(4), pp. 447-460.
  4. Choi, Keunbae. (2009). A Study on the Isoperimetric Problem in a Plane focused on the Gestalt's View for the mathematically gifted Students in the elementary School, Journal of Korea Society of Educational Studies in Mathematics School Mathematics, 11(2), 227-241.
  5. Choi, Keunbae. (2011). A Study on the Teaching Design of the Isoperimetric Problem on a Plane for Mathematically gifted students in the Elementary School -focused on the geometric methods-, J. Korean Soc. Math. Ed. Ser. A: The Mathematical Education, 50(4), 441-466.
  6. Choi, Keunbae. & Chae, J. L. A Study on the Abstraction of Learning Materials from the Isoperimetric Problem to Develop a Spatial Sense, Journal of Korea Society of Educational Studies in Mathematics School Mathematics, 16(4), 677-690.
  7. Blasjo, V. (2005). The Evolution of the Isoperimetric Problem, The American Mathematical Monthly, 112, 526-566. https://doi.org/10.1080/00029890.2005.11920227
  8. Demjanenko, S. (2008). The Isoperimetric Inequality: A History of the Problem, Proofs and Applications. http://astrophysicsgeek.files.wordpress.com/2008/04/paper_final.pdf
  9. Freudenthal, H. (1973). Mathematics as an educational task. Reidel: Dortrecht.
  10. Hildebrandt, S. & A. Tromba (1996). The Parsimonious Universe: Shape and Form in the Natural World, Springer-Verlag New York, Inc.
  11. Siegel, A. Historical Review of the Isoperimetric Theorem in 2-D, and its place in Elementary Plane Geometry. preprint. http://www.cs.nyu.edu/faculty/siegel/SCIAM.pdf
  12. Spivak, M. (1979), A Comprehensive Introduction to Differential Geometry, vol. 4, 2nd ed., Publish or Perish, Berkeley, CA.
  13. Tapia, R. A. (2009). The Remarkable Life of the Isoperimetric Problem: The World's Most Influential Mathematics Problem. http://www.princeton.edu/-wmassey/CAARMS15/PDF/Tapia.pdf