• Communications of Mathematical Education
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• v.26 no.1
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• pp.51-69
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• 2012

The cognition of an intrinsic attribute play an important role in the process of theoretical generalization. It is the aim of this paper to study how the theoretical generalization is made. First of all, we suggest the What-if-only-strategy(WIOS) which is the strategy helping the cognition of an intrinsic attribute. And we propose the process of the theoretical generalization that go on the cognitive stage, WIOS stage, conjecture stage, justification stage and insight into an intrinsic attribute in order. We propose the process of generalization adding the concrete process cognizing an intrinsic attribute to the existing process of generalization. And we applied the proposed process of generalization to two mathematical theorem which is being managed in middle school. We got a conclusion that the what-if-only strategy is an useful method of generalization for the proposition. We hope that the what-if-only strategy is helpful for both teaching and learning the mathematical generalization.

• Communications of Mathematical Education
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• v.11
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• pp.171-180
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• 2001

적응하기에 너무나 빠른 속도로 정보의 물결이 굽이치는 현실에서, 초등교육 현장은 지, 덕, 체를 겸비한 조화로운 인간 교육, 즉 참된 인간 교육의 필요성이 강조되고 있다. 그러나 교육 자체의 본질과 목적에 비추어 조화로운 인간을 육성하기 위한 기초교육이 어떤 모습을 띠어야 할 것인가에 대한 문제의식에서 Pestalozzi의 기본 사상, 초등교육의 원리, 수학교육학의 체계를 고찰해 봄으로써 우리의 초등수학교육에 시사하는 바를 찾고자 한다.

• Journal of Educational Research in Mathematics
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• v.25 no.4
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• pp.617-630
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• 2015

A perspective of the nature of teacher knowledge has a significant impact on why and how we study teacher knowledge. The purpose of this study was to explore the mathematics knowledge in teaching (MKiT) in terms of meanings, characteristics, and analytic methods. MKiT regards teacher knowledge as practical knowledge that has meanings only when it is employed in teaching mathematics. Various components of teacher knowledge interact one another in teaching mathematics. Given this, teacher knowledge is regarded as an organism specific to teaching contexts and it needs to be analyzed by observing lessons or a teacher's actions related directly to the lessons. This paper is expected to induce research on teacher knowledge from the MKiT perspective and urge researchers to have a profound understanding of the nature and analytic methods of teacher knowledge. Some implications of future research are included.

• Journal for History of Mathematics
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• v.10 no.2
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• pp.82-88
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• 1997

수학 기초의 위기에 대한 직관주의적 대안은 파격적인 것이었다. 수학을 지나치게 축소시켰다고 비난을 받기도 하지만 역리의 제거라는 측면만 본다면 직관주의는 성공적이라고 할 수 있었다. 본고는 직관주의를 개관하고 직관주의가 가지는 보다 철학적이고 본질적인 측면을 직관주의의 창시자인 Brouwer의 수학관과 세계관에서 찾는다.

• Journal of Elementary Mathematics Education in Korea
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• v.14 no.1
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• pp.65-80
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• 2010

The aims of our study are to investigate the nature of mathematical reasoning and the teaching of mathematical reasoning in school mathematics. We analysed the process of shaping deduction in ancient Greek based on Netz's study, and discussed on the comparison between his study and Freudenthal's local organization. The result of our analysis shows that mathematical reasoning in elementary school has to be based on children's natural language and their intuitions, and then the mathematical necessity has to be formed. And we discussed on the sequences and implications of teaching of the sum of interior angles of polygon composed the discovery by induction, justification by intuition and logical reasoning, and generalization toward polygons.

• Journal for History of Mathematics
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• v.21 no.1
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• pp.139-156
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• 2008

We investigate the inducing method of irrational numbers in junior high school, under algebraic as well as geometric point of view. Also we study the treatment of irrational numbers in the 7th national curriculum. In fact, we discover that i) incommensurability as essential factor of concept of irrational numbers is not treated, and ii) the concept of irrational numbers is not smoothly interconnected to that of rational numbers. In order to understand relationally the incommensurability, we suggest the method for inducing irrational numbers using construction in junior high school.

• Communications of Mathematical Education
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• v.18 no.3 s.20
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• pp.243-253
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• 2004

수학은 그 근본이 창조적인 활동이다. 창조성은 그것의 본질적인 아름다움을 통해서나 현실 세계문제에 응용되는 방식 중의 하나로 개발될 수 있다. 수많은 위대한 수학자들은 수학의 응용에 진실로 흥미를 가져왔으며, 물리적 현상의 수학적 규명으로부터 새로운 수학이론개발의 영감을 얻어왔다. 우리는 이번연구에서 수학적 모델이 어떻게 형성되고 사용되는지를 살펴보고 수학의 응용 단계에 대하여 연구해 볼 것이다. 그 수학의 응용 예시로써 스포츠, 환경, 인구에 대해 다루어 볼 것이다.

• Journal for History of Mathematics
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• v.21 no.4
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• pp.19-48
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• 2008

In this paper, the life of Emmy Noether is reviewed in context of today's society where progress in social and educational equality for women have not significantly impacted the participation of women mathematician at the highest level of mathematics study. Recent studies have shown that there is little or no gender difference in mathematics performance if the women are treated equally in the country. Yet, the number of women scientists/mathematicians at the university level or related research centers are very low for all countries including the U.S. as well as Korea. Emmy Noether became a mathematician in early 20th century Germany where women were discouraged(not allowed) from even studying mathematics at the University. She overcame gender, racial, and social prejudices of the time to become one of the greatest mathematicians of the 20th century as a founding contributor of Abstract Algebra. Overcoming all the difficulties to focus on the study of mathematics to contribute at the highest level of mathematics provides an example of leadership for both men and women that is relevant today. Especially for women, Emmy Noether's life is a study in perseverance for the love of mathematics that proves that there is no gender difference even at the highest level of mathematics.

• Journal for History of Mathematics
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• v.14 no.2
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• pp.69-76
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• 2001

This paper aims to show an inner, basic harmony between metaphysics and current directions in mathematics and in the philosophy of mathematics. In this attempt, the general truths of metaphysics and the truths particularly relevant to the nature of mathematical abstraction serve as speculative guides in ordering the content and discussing the nature of the multiple questions lie between and disputed frontiers of metaphysics and mathematics.

• Journal for History of Mathematics
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• v.16 no.4
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• pp.53-58
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• 2003

The aim of this paper is to outline a nature of pure mathematics up to the point at which its main theses can be clearly grasped and compared with other philosophical positions. Also, We analyze the contents and discuss the nature of questions which lie in pure mathematics.