• 한국수학교육학회지시리즈A:수학교육
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• 제45권2호
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• pp.177-189
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• 2006

This study focuses on the analysis of prospective elementary teachers' representation of trapezoid area and teacher educator's reflecting in the context of a mathematics course. In this study, I use my own teaching and classroom of prospective elementary teachers as the site for investigation. 1 examine the ways in which my own pedagogical content knowledge as a teacher educator influence and influenced by my work with students. Data for the study is provided by audiotape of class proceeding. Episode describes the ways in which the mathematics was presented with respect to the development and use of representation, and centers around trapezoid area. The episode deals with my gaining a deeper understanding of different types of representations-symbolic, visual, and language. In conclusion, I present two major finding of this study. First, Each representation influences mutually. Prospective elementary teachers reasoned visual representation from symbolic and language. And converse is true. Second, Teacher educator should be prepared proper mathematical language through teaching and learning with his students.

• 한국수학교육학회지시리즈A:수학교육
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• 제21권1호
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• pp.23-24
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• 1982

• East Asian mathematical journal
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• 제6권2호
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• pp.207-212
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• 1990

• 한국수학교육학회지시리즈D:수학교육연구
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• 제16권4호
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• pp.265-276
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• 2012

These days, with the emphasis on statistical literacy, the importance of communication is the focus of attention. Communication about statistics is important since it is a way of describing the understanding of concepts and the interpretation of data. However, students usually have trouble with expressing what they understand, especially through writing. In this paper, we examined preservice teachers' difficulties when they wrote about statistical concepts. By comparing preservice teachers' written responses and interview transcripts of the variance concept task, we could find the missing information in their written language compared to their verbal language. From the results, we found that preservice teachers had difficulty in connecting terms contextually and conceptually, presenting various factors of the concepts that they considered, and presenting the problem solving strategies that they used.

• East Asian mathematical journal
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• 제40권3호
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• pp.307-318
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• 2024

This paper explores the application of matrix factorization, specifically CUR decomposition, in the clustering of Korean language documents by topic. It addresses the unique challenges of Natural Language Processing (NLP) in dealing with the Korean language's distinctive features, such as agglutinative words and morphological ambiguity. The study compares the effectiveness of Latent Semantic Analysis (LSA) using CUR decomposition with the classical Singular Value Decomposition (SVD) method in the context of Korean text. Experiments are conducted using Korean Wikipedia documents and newspaper data, providing insight into the accuracy and efficiency of these techniques. The findings demonstrate the potential of CUR decomposition to improve the accuracy of document clustering in Korean, offering a valuable approach to text mining and information retrieval in agglutinative languages.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제3권2호
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• pp.133-142
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• 1999

When the game is used in mathematics loaming, students take pleasure of game in themselves and communicate through interaction with other students naturally. It is important because the game is activity for intellectual growth and social development. Also students have had affirmative attitude about mathematics by Emu. The communication in mathematics loaming helps that linking informal and intuitive thinking of students with abstract and basic mathematical language and that it also helps changing from the dependent situation to teacher to the self-directive teaming of students. The purpose of this thesis is to effect on extension of mathematical communication ability to the second grade of elementary school students by applying of computational-strategy games. It has conclusion as follows. Application of computational-strategy games had effected on extension of mathematical communication ability importantly. When students have mathematical communication through computational-strategy games, at the beginning, the words which students used was long, incorrect, and unnecessary words. But at the later, students became to use clear, correct concise words as they connect their routine language with mathematical symbol. Therefore we can make sure that mathematical communication ability of the second grade students' is extended by applying of computational-strategy games.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.556-559
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• 2002

The Call Processing Language (CPL, in short), recommended in RFC 2824 of IETF, is a service description language for the Internet Telephony. The CPL allows users to define their own services, which dramatically improves the choice and flexibility of the users. The syntax of the CPL is strictly defined by DTD (Document Type Definition). However, compliance with the DTD is not a sufficient condition for correctness of a CPL script. There are enough rooms for non-expert users to make semantical mistakes in the service logic, which could lead to serious system down. In this paper, we present six classes of semantic warnings for the CPL service description: MF, IS, CR, AS, US, OS. For each class, we give the definition and its effects with an example script. These warnings are not necessarily errors. However, these warnings will help users to find ambiguity, redundancy and inconsistency in their own service description.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 추계종합학술대회
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• pp.363-367
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• 2002

컴퓨터를 이용한 전자문서처리에 이용되는 기존의 문서편집 시스템에서는 비구조적인 문서구조를 다루게 됨으로써 시스템 내에서 사용되는 수학식의 표현은 이미지나 텍스트 등의 비구조적인 방법에 의해 표현되거나 처리된다. 이렇게 사용된 수학식은 문서의 가독성과 재사용성 그리고 문서의 처리와 교환에 상대적인 불편을 초래하게 된다. 그러므로 이러한 단점을 극복하고 효율적으로 구조적인 문서상에 MathML(Mathematical Markup Language) 수식 구조를 적용시킬 수 있는 문서편집 시스템이 요구된다. 이에 본 논문에서는 MathML을 기반으로 한 수학식의 표현을 구조적으로 처리할 수 있는 MathML 수식 편집이 가능한 XML(eXtensible Markup Language) 기반의 구조적 문서생성을 위한 문서 편집 시스템을 설계 및 구현하였다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제23권4호
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• pp.1131-1148
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• 2009

이 논문에서는 대학에서 컴퓨터를 사용한 고급단계수학강좌의 방안 연구로서, ISETL 프로그램을 소개하고 그것을 활용한 대수학 강좌 방향을 모색하고자 한다.

• 대한수학교육학회지:학교수학
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• 제15권2호
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• pp.243-262
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• 2013

본 연구는 인지적 측면에서 수학 교사의 교수 양식을 분석하는 것을 목적으로 하고 있다. 이를 위해 먼저 문헌 연구를 통해 수학에서 서로 대비되는 유형으로 분류될 수 있는 인지적 사고 요소들을 탐색하고, 확인적 요인분석을 통해 이 요소들을 시각적 양식과 분석적 양식으로 범주화할 수 있다는 것을 검증하였다. 요인 분석 결과를 바탕으로 두 가지 양식과 두 가지 양식이 대등하게 나타나는 혼합적 양식을 수학 교수 양식으로 설정하고, 교사들의 양식을 분석할 수 있는 분석틀을 개발하였다. 또한, 수학 교수 양식 분석틀을 Flanders의 언어 상호작용 분석법(Amidon & Flanders, 1967)에 적용하여 교사들의 수학 수업을 통해서 교수 양식을 분석할 수 있는 방법을 설계하였다. 그리고 이를 활용해 수학 수업에서 교사들이 사용하는 수학적 언어를 분석한 결과, 실제로 시각적 양식, 분석적 양식, 혼합적 양식이 나타나는 것을 확인하였다.