• East Asian mathematical journal
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• 제29권2호
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• pp.207-239
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• 2013

This research is a study on student's understanding fundamental concepts of mathematical curriculum, especially in geometry domain. The goal of researching is to analyze student's concepts about that domain and get the mathematical teaching methods. We developed various questions of descriptive assessment. Then we set up the term, procedure of research for the understanding student's knowledge of geometric figures. And we analyze the student's understanding extent through investigating questions of descriptive assessment. In this research, we concluded that most of students are having difficulty with defining the fundamental concepts of mathematics, especially in geometry. Almost all the students defined the fundamental conceptions of mathematics obscurely and sometimes even missed indispensable properties. And they can't distinguish between concept definition and concept image. Prior to this study, we couldn't identify this problem. Here are some suggestions. First, take time to reflect on your previous mathematics method. And then compile some well-selected questions of descriptive assessment that tell us more about student's understanding in geometric concepts.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제26권1호
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• pp.15-28
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• 2023

학교 수학에서 수학 용어의 의미를 통해 수학적 개념이 학습되기 때문에 학습자는 수학 용어를 정확하게 이해하고 알맞게 사용해야 한다. 그러나 초등 수학 교과서와 실생활에서 사용하는 수학 용어의 의미가 다르게 인식될 수 있으며 이러한 불일치는 학습자의 수학 용어 이해에 혼란을 야기할 수 있다. 따라서 학교 수학에서의 의미와 실생활에서의 의미를 살펴보기 위하여 초등 수학 교과서와 국어사전에서 서술하는 수학 용어의 의미를 비교 분석하여 수학 용어를 학습하는 과정에 대한 교수학적 시사점을 제공하고자 하였다. 분석 결과, 교과서의 의미와 국어사전의 의미가 유사하게 나타나는 경우도 있으나 각각의 의미가 일치하지 않는 경우, 각각의 의미가 가리키는 대상이 다른 경우가 나타났다. 이러한 경우 학습자의 혼란을 막기 위하여 교과서의 의미와 국어사전의 의미 간 차이를 인식하고 각각의 의미를 보완하여 지도할 필요가 있다.

• 한국수학교육학회지시리즈A:수학교육
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• 제47권2호
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• pp.197-219
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• 2008

Unlike ordinary situations, deifinitions play a very important role in mathematics education in schools. Mathematical concepts have been mainly acquired by given definitions. However, according to didactical intentions, mathematics education in schools has employed mathematical concepts and definitions with less strict forms than those in pure mathematics. This research mainly discusses definitions used in geometry (promising) course in primary schools to cope with possibilities of creating misconception due to this didactical transformation. After analyzing problems with potential misconceptions, a survey was conducted $\underline{with}$ 80 primary school teachers in Jeju to investigate their recognitions in meaning of mathematical concepts in geometry and attitudes toward teaching. Most of the respondents answered they taught their students while they knew well about mathematical definitions in geometry but the respondents sometimes confused mathematical concepts of polygons and circles. Also, they were aware of problems in current mathematics textbooks which have explained figures in small topics (classes). Here, several suggestions are proposed as follows from analyzing teachers' recognitions and researches in mathematical viewpoints of definitions (promising) in geometric figures which have been adopted by current mathematics textbooks in primary schools from the seventh educational curriculum. First, when primary school students in their detailed operational stage studying figures, they tend to experience $\underline{a}$ collision between concept images acquired from activities to find out promising and concept images formed through promising. Therefore, a teaching method is required to lessen possibility of misconceptions. That is, there should be a communication method between defining conceptual definitions and Images. Second, we need to consider how geometric figures and their elements in primary school textbooks are connected with fundamental terminologies laying the foundation for geometrical definitions and more logical approaches should be adopted. Third, the consistency with studying geometric figures should be considered. Fourth, sorting activities about problems in coined words related to figures and way and time of their introductions should be emphasized. In primary schools mathematics curriculum, geometry has played a crucial role in increasing mathematical ways of thoughts. Hence, being introduced by parts from viewpoints of relational understanding should be emphasized more in textbooks and teachers should teach students after restructuring this. Mathematics teachers should help their students not only learn conceptual definitions of geometric figures in their courses well but also advance to rigid mathematical definitions. Therefore, that's why mathematics teachers should know meanings of concepts clearly and accurately.

• 대한수학교육학회지:학교수학
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• 제17권2호
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• pp.289-308
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• 2015

본 연구는 수학적 과정을 중심으로 한국, 중국, 일본, 미국의 초등 수학과 교육과정을 비교 분석한 것이다. 분석 결과 4개국에서 강조하는 수학적 과정을 모두 포괄할 수 있는 10가지의 요소 즉, 개념 원리 법칙 기능의 학습, 수학적 문제해결력, 수학적 추론 능력, 수학적 의사소통 능력, 수학적 표현 능력, 수학적 연결 능력, 수학적 창의력, 수학적 인성, 자기주도적 학습 능력, 긍정적 태도를 추출하였고, 이에 대한 교육과정별 공통점과 차이점을 분석하였다. 이를 토대로 우리나라의 수학과 교육과정 개발과 관련한 시사점을 제안한다.

• East Asian mathematical journal
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• 제27권2호
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• pp.181-202
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• 2011

The study was planned to analyze the figure concepts teachers have according to the years of experiences based on the two aspects, the subject matter knowledge and the pedagogical content knowledge. Further, it aims to have the results utilized in teacher education and training, and ultimately to help elementary school students to establish the accurate figure concepts. We administered the test to the random sample of 77 elementary school teachers of the grade 3 to grade 6, from nine schools of the Daegu, Ulsan and Gyeongsangbuk-do districts, and we analyzed the results. Correlational analysis between the years of experience and the knowledge showed that the content understanding and knowledge decreases as the years of experience increases, while the experiential knowledge related to the understanding of the students and the pedagogical methods increases as the years of experience increases.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제10권1호
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• pp.29-39
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• 2007

This paper is to give a brief introduction to a new discipline called 'conceptual metaphor' and 'mathematical metaphor(Lakoff & Nunez, 2000) from the viewpoint of mathematics education and to analyze the metaphors at 4th graders' mathematics classroom as a case of conceptual metaphors. First, contemporary conception on metaphors is reviewed. Second, it is discussed on the effects and defaults of metaphors in teaching and learning mathematics. Finally, as a case study of mathematical metaphors, conceptual metaphors on the concepts of triangles at 4th graders' mathematics classrooms are analyzed. Students may reason metaphorically to understand mathematical concepts. Conceptual metaphor makes mathematics enormously rich, but it also brings confusion and paradox. Digging out the metaphors may lighten both our spontaneous everyday conceptions and scientific theorizing(Sfard, 1998). Studies of metaphors give us the power of understanding the culture of mathematics classroom and also generate it.

• 대한수학교육학회지:학교수학
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• 제4권2호
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• pp.283-296
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• 2002

In this study we tried to find the method of using the tangrams and the mosaic puzzles together for learning the elementary geometry in the Korean primary schools. The tangram and the mosaic puzzle activity-panels were developed and the activity-cards for them also were designed. The criteria to be used for the analyses of contents of the activity-cards were developed. We surveyed and analyzed the students' responses, A previous research had insisted that solely using the tangrams were not useful in learning about an obtuse-angled triangle in the elementary geometry (Welchman, 1999), but the combinative uses of the tangrams and the mosaic puzzles were found to extend the limits of the previous study in investigating the figures of the plain diagrams. Actually, the tangrams and the mosaic puzzles helped the students to learn the concepts of several elements of the plain diagrams such as 'angles', 'sides', and 'angular points', with students'operational comparison of the diagrams developed with them. They also provided useful clues in learning the relationship between the 'length' and the 'area' of the Plain diagrams. The students participated in the class with much activities, using the operational learning materials. They also comprehended the concepts and the principles of the elementary geometry more thoroughly, expressing their ideas in spoken or written languages through interactive communication. In conclusion, the tangram and mosaic puzzles can be used for learning the elementary geometry of the primary school level as motivative learning materials, helping students enhance diverse mathematical thinking and discover mathematical principles.

• 한국초등수학교육학회지
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• 제15권1호
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• pp.95-120
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• 2011

논술에서 요구되는 능력, 즉 논술 능력은 기본적으로 이해력, 논리적이고 창의적인 사고력, 표현력과 같은 고등사고능력이다. 그러나 이러한 논술 능력은 단기간에 신장되지 않는다. 더욱이 수학은 계열성이 강한 학문으로 이러한 능력의 신장을 위해서는 초등학교 저학년 때부터 차근차근 단계에 맞게 준비해야하는 것은 어찌 보면 당연한 일이다. 그러나 현재 초등 수리 논술에 대한 용어의 정의가 없어 사교육 시장을 중심으로 무분별하게 초등 수리 논술이라는 용어가 사용되고 있다. 초등학교는 1학년부터 6학년까지 다양한 발달단계의 학생들이 모여 있는 곳이다. 초등 논술이 입시논술과 그 성격과 지도방향이 다르듯 초등 수리 논술 또한 그 성격과 지도 방향이 달라야 한다. 논술 능력은 단기간에 완성되는 것이 아니므로 어릴 때부터 꾸준한 연습이 필요하며, 더욱 중요한 것은 흥미를 잃지 않도록 하는 것이다. 따라서 초등 수리 논술의 올바른 개념을 정립하고, 성격과 지도방향을 설정하여 후속연구를 활발히 해야 할 필요성이 있다.

• 한국초등수학교육학회지
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• 제18권2호
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• pp.279-295
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• 2014

2015년 교육과정 개정을 앞두고 있는 현재, 현행 교육과정과 다른 나라 교육과정과의 비교 분석을 통해 우리나라 교육과정 개정을 위한 바람직한 방향을 모색할 필요가 있다. 이러한 입장에서 본 논문에서는 학습 내용을 중심으로 미국의 CCSSM과 우리나라의 2011 초등학교 수학과 교육과정을 비교 분석하였다. 그 결과 CCSSM에서 취급하는 학습 내용이 2011 교육과정에서 취급하는 학습 내용에 비해 적다고 하기 어렵고, 2011 교육과정보다 훨씬 빠른 시기에 도입하여 깊게 배우는 학습 내용과, 심지어 우리나라에서는 중학교 이상에서 취급하는 학습 내용도 있음을 알 수 있었다. 이것으로부터 우리나라의 차후 교육과정 개정을 위해 다음과 같은 시사점을 얻을 수 있었다. 첫째, 초등학교 저학년에서는 기초적인 개념의 이해와 기능의 습득을 충분히 강조할 필요가 있다. 둘째, 수학과에서 학년군제의 시행을 재고할 필요가 있다. 셋째, 교육과정 개정은 충분한 논의를 거쳐 이루어져야 하며, 개정의 과정을 잘 정리하여 공개할 필요가 있다. 넷째, 우리나라의 차후 교육과정 개정에서 CCSSM에 대한 미국 내의 비판을 참고할 필요가 있다.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제7권1호
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• pp.43-56
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• 2003

In late 19C, German mathematician Felix Klein declaired "Erlangen program" to reform mathematics education in Germany. The main ideas of "Erlangen program" contain the importance of instructing the concepts of functions and groups in school mathematics. After one century from that time, the importance of concepts of groups revived by Bourbaki in the sense of the algebraic structure which is the most important structure among three structures of mathematics - algebraic structure. ordered structure and topological structure. Since then, many mathematicians and mathematics educators devoted to work with the concepts of group for school mathematics. This movement landed on Korea in 21C, and now, the concepts of groups appeared in element mathematics text as plane rigid motion. In this paper, we state the rigid motions centered the symmetry - an important notion in group theory, then summarize the results obtained from some classroom activities. After that, we discuss the responses of children to concepts of groups.of groups.