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http://dx.doi.org/10.7468/mathedu.2014.53.4.493

A case study on high school students' mental image in the process of solving regular polyhedron problems  

Hong, Gap Lyung (Daegu Science High School)
Kim, Won Kyung (Korea National University of Education)
Publication Information
The Mathematical Education / v.53, no.4, 2014 , pp. 493-507 More about this Journal
Abstract
The purpose of this study is to analyze how high school students form and interpret the mental image in the process of solving regular polyhedron problems. For this purpose, a set of problems about the regular polyhedron's vertex is developed on the base of the regular polyhedron's duality and circulation. and applied to 2 students of the 12th graders in D high school. After 2 hours of teaching and learning and another 2 hours of mental image-analysis process, the following research findings are obtained. Fisrt, a student who recorded medium high-level grade in the national scholastic test can build the dynamic image or the patten image in the process of solving regular polyhedron's vertex problems by utilizing the 3D geometry program. However, the other student who recorded low-level grade can build the concrete-pictorial image. Second, pattern image or dynamic image can help students solve the regular polyhedron's vertex problems by proper transformation of informations and the mental images while the concrete-pictorial image does not help. Hence, it is recommended that the mathematics teachers should develop teaching and learning materials about the regular polyhedron's duality and circulation and also give students suitable questions to build the various mental images.
Keywords
Regular polyhedron; Mental image; 3D dynamic geometric program;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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