• 한국수학교육학회지시리즈A:수학교육
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• 제62권3호
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• pp.341-362
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• 2023

본 연구는 초등학교 1학년 학생을 대상으로 등호의 관계적 이해를 강조한 수업에서 나타나는 학생의 노티싱을 초점의 중심, 집중하는 상호작용, 수학 과제, 수학 활동의 본질의 네 가지 측면에서 분석하였다. 구체적으로 선행연구에서 도출한 지도방안을 등호를 처음 도입하는 1학년 덧셈과 뺄셈 단원에 적용하여 등호의 관계적 이해를 강조한 수업을 실행하고, 이 과정에서 나타난 학생의 노티싱을 종합적으로 분석하였다. 그 결과 실제 수업 맥락에서 초점의 중심은 등식의 구조와 과제 형태, 교사와 학생의 상호작용, 교실 관행 등에 영향을 받았으며, 특히 학생이 등호를 관계적으로 인식할 수 있도록 돕는 특정한 교사와 학생의 상호작용을 발견할 수 있었다. 또한 크기가 같은 두 양에 주목하는 경우와 양변의 관계에 주목하는 경우 등식을 관계적으로 추론할 수 있었던 것과 같이 등식에 대한 학생의 노티싱은 등식을 추론하는 방식에 영향을 미친다는 것을 알 수 있었다. 이러한 연구결과를 통해 등호의 지도 방안에 대한 시사점을 제시하였다.

• East Asian mathematical journal
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• 제32권4호
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• pp.565-587
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• 2016

The purpose of this study was to analyze the understanding of the meaning of fraction division and fraction division algorithm of elementary mathematical gifted students through the process of problem posing and solving activities. For this goal, students were asked to pose more than two real-world problems with respect to the fraction division of ${\frac{3}{4}}{\div}{\frac{2}{3}}$, and to explain the validity of the operation ${\frac{3}{4}}{\div}{\frac{2}{3}}={\frac{3}{4}}{\times}{\frac{3}{2}}$ in the process of solving the posed problems. As the results, although the gifted students posed more word problems in the 'inverse of multiplication' and 'inverse of a cartesian product' situations compared to the general students and pre-service elementary teachers in the previous researches, most of them also preferred to understanding the meaning of fractional division in the 'measurement division' situation. Handling the fractional division by converting it into the division of natural numbers through reduction to a common denominator in the 'measurement division', they showed the poor understanding of the meaning of multiplication by the reciprocal of divisor in the fraction division algorithm. So we suggest following: First, instruction on fraction division based on various problem situations is necessary. Second, eliciting fractional division algorithm in partitive division situation is strongly recommended for helping students understand the meaning of the reciprocal of divisor. Third, it is necessary to incorporate real-world problem posing tasks into elementary mathematics classroom for fostering mathematical creativity as well as problem solving ability.

• 한국수학교육학회지시리즈A:수학교육
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• 제41권2호
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• pp.173-187
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• 2002

The purpose of this study through ethnographic inquiry is to describe how an elementary teacher teaches mathematics with understanding. The ways that teachers'beliefs affect instructional activities, what means understanding from the view of cognitive psychology, and ethnographic research tradition were reviewed to anchor theoretical background of this study. A third-grade teacher and his 45 students were selected in order to capture vivid and thick descriptions of the teaching and learning activities of mathematics. Three major sources of data, that is, participant-observation with video taping, formal and informal interviews with the teacher and his students, and a variety of official documents were collected. These data were analyzed through two phases: data analysis in the field and after the fieldwork. According to data analysis, ‘teaching mathematics with understanding’ was identified as the teachers central belief of teaching mathematics. In order to implement his belief in teaching practices, the teacher made use of three strategies: ⑴ valuing individual student's own way of understanding, ⑵ bring students' everyday experiences into mathematics classroom, and ⑶ lesson objectivies stated by students. It is suggested for future research that concrete and specific norms of mathematics classroom for the improvement of mathematics understanding are needed to be identified and that experienced and skillful teachers' practical knowledge should be incorporated with theories of teaching mathematics and necessarily paid more attention by mathematics educators.

• 한국수학교육학회지시리즈A:수학교육
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• 제55권1호
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• pp.1-19
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• 2016

Given the importance of understanding the equal sign in developing early algebraic thinking, this paper investigated how a total of 695 students in grades 2~6 understood the equal sign. The students completed a questionnaire with three types of items (equation structure, equal sign definition, and open equation solving) based on the construct map by four different levels of understanding the equal sign. The questionnaire was analyzed by Rasch model. The results showed that about 80% of the students were at least Level 3 which means a basic relational understanding of the equal sign. However, the success rates varied across grades and it was noticeable that about 70% of the second graders remained at Level 1 or 2 which maintains an operational understanding of the equal sign. The results of item types demonstrated that item difficulty for the advanced relational thinking was the highest and this is the same even for the Level 4 students. This paper is expected to investigate elementary school students' understanding of the equal sign and provide implications of how to deal with the equal sign in the elementary school.

• 한국수학교육학회지시리즈A:수학교육
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• 제48권3호
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• pp.235-263
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• 2009

The purpose of the study was to investigate the influence of children's understanding of fractions in mathematics problem solving. Kieren has claimed that the concept of fractions is not a single construct, but consists of several interrelated subconstructs(i.e., part-whole, ratio, operator, quotient and measure). Later on, in the early 1980s, Behr et al. built on Kieren's conceptualization and suggested a theoretical model linking the five subconstructs of fractions to the operations of fractions, fraction equivalence and problem solving. In the present study we utilized this theoretical model as a reference to investigate children's understanding of fractions. The case study has been conducted with 6 children consisted of 4th to 5th graders to detect how they understand factions, and how their understanding influence problem solving of subconstructs, operations of fractions and equivalence. Children's understanding of fractions was categorized into "part-whole", "ratio", "operator", "quotient", "measure" and "result of operations". Most children solved the problems based on their conceptual structure of fractions. However, we could not find the particular relationships between children's understanding of fractions and fraction operations or fraction equivalence, while children's understanding of fractions significantly influences their solutions to the problems of five subconstructs of fractions. We suggested that the focus of teaching should be on the concept of fractions and the meaning of each operations of fractions rather than computational algorithm of fractions.

• East Asian mathematical journal
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• 제33권2호
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• pp.177-197
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• 2017

The purpose of this study is to investigate and analyze the understandings of elementary pre-service teachers about 'estimation' in the elementary mathematics. Together with this analysis, we identify elementary pre-service teacher's Mathematical Pedagogical Contents Knowledge(MPCK), especially focusing to Subject Matter Knowledge(SMK). In order to this goals, we investigate contents relating to 'estimation' from $1^{st}$ curriculum to 2009 revised curriculum and compare 'rounding up', 'rounding off', 'rounding' in the elementary mathematics textbooks. As results of investigations, 'estimation' has been teaching at the 'Measurement' domain from $3^{rd}$ curriculum, but contexts of measuring weaken from $7^{th}$ curriculum. 'Rounding up(off)' is defined three types in the textbooks from $1^{st}$ to 2009 revised curriculum. And we examine elementary pre-service teachers through the questions on these 'estimation' contents. On the analysis of pre-service teacher's understanding relating MPCK, four themes is summarized as followings; the understanding of '0' in the 'rounding up', the cognitive gap between 'rounding up' and 'rounding off', the difference of percentage of correct answers according to types of question in the 'rounding up', and the difference between the definition of 'rounding up' and the definition of 'rounding'.

• 한국수학교육학회지시리즈A:수학교육
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• 제41권3호
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• pp.233-256
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• 2002

This study investigated school mathematics curriculum of England, newly revised in 1998, focused on the 'number and algebra' domain among three major domains of the English curriculum. On the basis of its understanding, this domain was compared and analyzed with school mathematics curriculum of Korea. In doing so, this study explored its plans and procedures and established a frame of comparison for the curriculums between the two countries. The structure of the National Curriculum in England is composed of programmes of study and attainment targets. The former sets out what should be taught in mathematics at key stages 1, 2, 3, and 4 and provides the basis for planning schemes of work, and the latter sets out the knowledge, skills, and understanding that pupils of different abilities and matures are expected to have by the end of each key stage. Attainment targets are composed of eight levels and an additional level of increasing difficulty. According to the results of the present study, Korea focuses on the formal and systematic mathematical knowledge on the basis of sound understanding of certain mathematical terms or concepts. On the other hand, England tends to deal with numbers more flexibly and naturally through the aquisition of mental methods, calculator use methods, etc, and emphasizes that mathematics be realistic and useful in solving a diverse number of problems confronted in everyday life.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.34-42
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• 2024

This study investigated the academic achievement of science and high school students according to the characteristics of R&E activities in mathematics and science. In addition, based on the survey results, the correlation between R&E activity characteristics and mathematics and science academic achievement was studied through correlation analysis and factor analysis between subjects. There was a difference in academic achievement in mathematics and science according to the characteristics of the R&E activity area, and the experience of R&E activity was found to be closely related to the academic achievement of related subjects. Depending on the area of R&E activity, mathematical and scientific academic achievement was found to be two factors: mathematical logic and natural understanding. Natural understanding factors significantly influenced students' academic achievement in mathematics, physics, and life sciences, and mathematical logic factors significantly influenced the academic achievement of students in chemistry and earth science subjects. In particular, mathematical logic ability was concentrated in excellent physics class students, and natural understanding ability was concentrated in excellent life science class students. Since the characteristics of the R & E activity area greatly influence the academic achievement of mathematics and science, it will significantly contribute to the selection and operation of the R & E activity area of science high school students.

• 한국학교수학회논문집
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• 제16권3호
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• pp.561-582
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• 2013

그동안 수학교육에서 의미는 강조되었지만 의미가 뜻하는 것이 무엇인지, 어떻게 분류될 수 있는지는 명확하게 규정되지 못하였다. 이러한 입장에서 의미를 표현적 의미와 인지적 의미로 구분하였으며, 두 의미도 수학적 상황과 현실적 상황으로서의 의미로 다시 재분류 하였다. 의미의 분류를 기반으로, 본 연구에서는 수학적 모델링문제 해결에서 보이는 학생의 의미 인식에 대해 살펴보았다. 그 결과 다른 의미의 이해에 비해 현실적 상황의 인지적 의미 이해에서는 상대적으로 어려움을 겪는다는 것을 알게 되었으며, 식을 세우는 단계에서의 의미보다 풀이과정에서의 의미 이해에 더 어려움을 겪는다는 것을 알게 되었다. 따라서 수학적 모델링의 전 과정에서 의미의 이해를 돕기 위해, 학생이 실생활 상황과 수학을 연결 지어 사고하도록 지도하여야 하며, 측정과 단위를 통한 지도 방법이 실생활 상황과 수학의 연결을 위한 하나의 방안이 됨을 알 수 있었다. 이러한 현실 상황과 수학의 연결을 강조한 지도를 통해 더 폭넓은 수학의 활용이 가능하리라 생각된다.

• 한국초등수학교육학회지
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• 제16권1호
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• pp.1-19
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• 2012

칸트는 "순수이성비판"에서 수학적 인식과 철학적 인식의 차이를 개념에 의한 인식과 개념의 구성에 의한 인식의 차이로 설명한다. 이 논문에서는 칸트가 주장한 수학적 인식의 특성인 '개념의 구성'의 의미를 "순수이성비판"에 나타난 감성과 지성에 관한 칸트의 이론을 바탕으로 고찰한다. 개념의 구성은 개념을 직관에 나타내는 것으로, 상상력의 종합에 의해 개념의 역동적인 도식을 형성하는 과정이다. 개념의 구성에 관한 칸트의 이론은 수학적 개념 학습 지도에서 경험에서의 추상화를 통한 개념 형성을 넘어 주어진 표상을 개념의 도식으로 보는 관점의 형성을 요청하는 것으로 해석될 수 있다.