• Proceedings of the Korea Society of Mathematical Education Conference
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• 2007.06a
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• pp.33-36
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• 2007

• Journal of Elementary Mathematics Education in Korea
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• v.1 no.1
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• pp.123-140
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• 1997

Researchers have insisted that mathematics should be learned not as a product but as a process. Nevertheless school mathematics has chosen ‘top-down’ method and has usually instilled into the mind of students the mathematical concepts in the form of product. Consequently school mathematics has been teamed by students without the process of inquiring and mathematical thinking. According to Freudenthal, it is a major source of all problems of mathematics education. He suggested mathematising as the method for 'teaching to think mathematically' 'Teaching to think mathematically' through the process of mathematization, interpreting and analysing mathematics as an activity, is a means to embody the purpose of mathematics education.

• Communications of Mathematical Education
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• v.15
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• pp.129-134
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• 2003

수학과의 평가는 수학의 학습 내용에 대한 학생들의 성취도를 다양한 유형의 평가기법을 이용하여 파악하고, 이를 통해 수학교육의 질을 관리하는데 그 목적이 있다. 그러나 지금까지의 대부분의 평가는 수학교육의 본질이라 할 수 있는 학습자의 수학적 사고력을 제대로 측정하지 못하고 단편적인 수학적 지식을 결과 위주로 평가하는 데 만족해 왔다. 한편으로는 지극히 교과서적이고 인위적인, 단지 문제를 위한 수학 문제는 수학 무용론을 부추기기도 하였다(박경미, 1998). 이와 같은 수학과의 위기를 탈출하기 위해서는 결과만을 고려하는 선다형의 문제가 아닌 과정을 중시하는 서술형 주관식 문제, 기능 위주의 고립된 수학적 지식을 측정한 학업성취 결과보다는 수학 학습에 대한 태도나 노력, 관심, 탐구적 활동 그리고 성향 등 정의적 영역의 평가가 절실히 요구된다. 따라서 기존의 지필 검사를 뛰어넘는 다양한 평가의 틀이 요구된다 하겠다. 이런 점에서 1999학년도부터 시행되고 있는 고등학교에서의 수행평가는 변화하는 교육기조의 교수 ${\cdot}$ 학습에 대한 적절한 평가의 한 방법이라 생각된다. 이에 본 연구는 다양한 평가의 틀 가운데 수학과 수행평가에 관한 고찰을 통해서 현장에서의 수행평가활용 방법을 찾는데 있다.

• Journal of the Korean School Mathematics Society
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• v.17 no.3
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• pp.359-384
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• 2014

The purpose of this study is inquire the reaction and adaptability of the mathematically gifted student, in the case of introduce learning materials based on GeoGebra in real class. The study program using GeoGebra consist of 'construction of fundamental figures', 'making animation with using slider tools' (graph of a function, trace of a figure, definite integral, fixed point, and draw a parametric curve), make up the group report after class. In detail, 1st to 15th classes are mainly problem-solving, and topic-exploring classes. To analyze the application effects of developed learning materials, divide students in four groups and lead them to make out their own creative products. In detail, guide students to make out their own report about mathematical themes that based on given learning materials. Concretely, build up the program to make up group report about their own topics in six weeks, after learning on various topics. Expert panel concluded that developed learning materials are successfully stimulate student's creativity in various way, after analyze of the student's activities. Moreover, those learning programs also contributed to the develop of the mathematical ability to thinking that necessary to writing a report. As well, four creative products are assessed as connote mathematically gifted student's creative thinking and meaningful elements in mathematical aspects.

• Communications of Mathematical Education
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• v.19 no.1 s.21
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• pp.167-189
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• 2005

본고에서는 영재교육에서 실제 학습자료의 부족과 이산수학의 중요성이 부각되고 있는 최근의 동향을 감안하여, 초등학교 영재교육에 적용 가능한 이산수학 프로그램을 개발하고자 한다. 우선 프로그램의 개발에 선행하여 관련 이론에 대한 고찰을 하였으며 제 7차 초등학교 수학과 교육과정의 이산수학 관련 내용을 분석하석 교육과정의 내용을 심화 ${\cdot}$ 발전할 수 있는 방안에 초점을 두었다. 특히 이산수학과 관련된 기존의 수학학습 프로그램들은 대부분 순수 수학적 이론을 제시하고 그에 따른 문제를 풀어보는 형식으로 구성되어 있는데, 본고에서는 이산수학의 이론을 중심으로, 문제해결에서 알고리즘적으로 사고하는 능력을 키울 수 있도록 하는 것에 초점을 두어 프로그램을 개발하고자 한다. 즉, 프로그램 자체가 하나의 수학적 원리를 탐구해 가는 과정이 되는 것이다. 또한 이산수학이 수학적 문제해결 학습과 연관됨에 착안하여 프로그램은 Polya의 문제해결학습을 바탕으로 구성하고자 한다.

• Journal of Gifted/Talented Education
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• v.21 no.2
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• pp.269-286
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• 2011

The purpose of this thesis is to examine difficulties students face in the inquiry activities of quadratic surface throughout mathematically gifted students' analogical inference and the influence of Cabri 3D in students' inquiry activities. For this examination, students' inquiry activities were observed, data of inferring quadratic surface process was analyzed, and students were interviewed in the middle of and at the end of their activities. The result of this thesis is as following: First, students had difficulties to come up with quadratic surfaced graph in the inquiry activity of quadratic surface and express the standard type equation. Secondly, students had difficulties confirming the process of inferred quadratic surface. Especially, students struggled finding out the difference between the inferred quadratic surface and the existing quadratic surface and the cause of it. Thirdly, applying Cabri 3D helped students to think of quadratic surface graph, however, since it could not express the quadratic surface graph in a perfect form, it is hard to say that Cabri 3D is helpful in the process of confirming students' inferred quadratic surface.

• School Mathematics
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• v.17 no.2
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• pp.355-376
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• 2015

This study aims to inspect the effect of the yungbokhap education on the development of students' mathematical competence by analyzing students' mathematical discourse in math-based yungbokhap instruction designed by Moon(2014). Specifically, this research focused on the analysis of students' participation structure. The reuslts shows that the students' competence for mathematical communication and inquiry has been improved through the instruction. In particular, the students were increasingly engaged with consensual talk. Also, in the beginning stage, the students tended to unconditionally criticize for others' mathematical opinion. Through the class participation, they gradually developed the competence to express their mathematical ideas to their peers with reasonable mathematical bases. These results suggests that the mathematics-based yungbokhap instruction has positively contributed to the improvement of students' mathematical competence. Based on the results, this paper presented implications for mathematics-based yungbokhap instrcution.

• Journal of the Korean earth science society
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• v.27 no.6
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• pp.591-605
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• 2006

The purpose of this study is to investigate the relationship between lunar and earth rotation, by quantitatively describing the rotation of lunar configuration which is observed during the lunar diurnal motion. Our research suggests that observation of the lunar diurnal motion could be used as a study topic in the earth science courses. The rotation of the lunar configuration is an apparent phenomenon that can be seen when an observer. standing on the ground. looks at the moon as if the lunar dark configuration rotates on the basis of horizontal line. In spite its competence as a study topic because it is observable by naked eyes, there are only few major textbooks that introduce this phenomenon with regard to the earth rotation. Therefore, this study induced the mathematical principle of the lunar rotation in detail and proposed that this could be developed as a scientific inquiry through practical observation. In addition, an analytical proof and qualitative method of explanation of the lunar reverse rotation were also presented.

• Journal of Educational Research in Mathematics
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• v.16 no.1
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• pp.59-78
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• 2006

As a theoretical background for this research, the literatures which focus on the rationale of teaching and learning of connecting with mathematics and science in calculus were investigated. And teaching and learning material of connecting with mathematics and science in calculus was developed. And then, based on the case study using this material, the research questions were analyzed in depth. Students could understand mean-velocity, instant-velocity, and acceleration in the experimenting process of constant acceleration movement. Also Students could understand fundamental ideas that instant-velocity means slope of the tangent line at one point on the time-displacement graph and rate of distance change means rate of area change under a time-velocity graph.

• The Mathematical Education
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• v.41 no.3
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• pp.341-360
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• 2002

The purpose of the study was to investigate the effectiveness of dynamic software in solving high school analytic geometry problems compared with traditional algebraic approach. Three high school students who have revealed high performance in mathematics were involved in this study. It was considered that they mastered the basic concepts of equations of plane figure and curves of secondary degree. The research questions for the study were the followings: 1) In what degree students understand relationship between geometric approach and algebraic approach in solving geometry problems? 2) What are the difficulties students encounter in the process of using the dynamic software? 3) In what degree the constructions of geometric figures help students to understand the mathematical concepts? 4) What are the effects of dynamic software in constructing analytic geometry concepts? 5) In what degree students have developed the images of algebraic concepts? According to the results of the study, it was revealed that mathematical connections between geometric approach and algebraic approach was complementary. And the students revealed more rely on the algebraic expression over geometric figures in the process of solving geometry problems. The conceptual images of algebraic expression were not developed fully, and they blamed it upon the current college entrance examination system.