• 한국수학교육학회지시리즈C:초등수학교육
• /
• 제16권3호
• /
• pp.267-283
• /
• 2013

수학적 정당화란 일반적으로 적절한 근거에 기초하여 자신의 주장이 참임을 보이는 과정이라고 할 수 있다. 하지만 교실 실제에서의 수학적 정당화는 사회적 상호작용을 바탕으로 수학적 의사소통을 촉진하는 역할을 한다고 할 수 있다. 이에 본 연구는 수학적 정당화 활동이 학생들의 문제해결과 의사소통 과정에 미치는 영향을 조사하고자 하였다. 이를 위해 수학적 정당화 활동이 강조되는 문제해결 중심 수업을 실시하고 문제 이해 활동, 개별 탐구 활동, 소집단 토의 활동, 전체 논의 과정에서의 수학적 정당화 활동과 의사소통 과정을 분석하였다. 연구 결과 수학적 정당화 활동은 학생들이 다양한 문제해결 방법을 찾는데 도움을 주었고 의사소통 과정을 촉진하였으며, 다양한 표현 방법을 사용하도록 자극하였다. 또한 수학적 정당화 활동은 학생들의 이해를 평가하는 방법이 될 수 있으며, 교실에서의 사회적 관계 및 역동적인 교실 문화를 형성하는데 기여하였다.

• 한국보육지원학회지
• /
• 제10권2호
• /
• pp.175-192
• /
• 2014

본 연구는 수학교육내용에 따른 만5세 유아 어머니의 중요성 인식 및 수학적 상호작용의 차이를 살펴보고, 어머니의 수학교육목적인식이 수학교육내용별 중요성 인식 및 수학적 상호작용에 미치는 영향과 구체물 및 학습지 효과성 인식이 수학교육내용별 중요성 인식 및 수학적 상호작용에 미치는 상대적 영향력을 살펴보았다. 연구대상은 만5세 유아 어머니 151명이었고, 질문지 조사를 실시하였다. 그 결과 만5세 유아 어머니의 수학교육내용에 대한 중요성 인식 및 수학적 상호작용은 '수와 연산'에서 높게 나타났다. 어머니의 수학교육목적인식은 모든 수학교육내용에 대한 중요성 인식을 예측하였고, '수와 연산', '공간과 도형', '규칙성'에 대한 수학적 상호작용을 예측하였다. 어머니의 구체물 효과성 인식은 학습지 효과성 인식보다 수학교육내용 중요성 인식을 더 잘 예측하였다. 그러나, '수와 연산'에 대한 중요성 인식은 학습지 효과성 인식이, 수학적 상호작용은 구체물 효과성 인식이 예측하였다. 연구결과는 수학교육내용 및 방법에 대한 구체적이고 실질적인 부모교육의 필요성 측면에서 논의되었다.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제50권2호
• /
• pp.213-231
• /
• 2011

The purpose of this study is to analyze the 6th graders' understanding of the concepts of variable on various aspects of school algebra. For this purpose, the test of concepts of variable targeting a sixth-grade class was conducted and then two students were selected for in-depth interview. The level of mathematics achievement of the two students was not significantly different but there were differences between them in terms of understanding about the concepts of variable. The results obtained in this study are as follows: First, the students had little basic understanding of the variables and they had many cognitive difficulties with respect to the variables. Second, the students were familiar with only the symbol '${\Box}$' not the other letters nor symbols. Third, students comprehended the variable as generalizers imperfectly. Fourth, the students' skill of operations between letters was below expectations and there was the student who omitted the mathematical sign in letter expressions including the mathematical sign such as x+3. Fifth, the students lacked the ability to reason the patterns inductively and symbolize them using variables. Sixth, in connection with the variables in functional relationships, the students were more familiar with the potential and discrete variation than practical and continuous variation. On the basis of the results, this study gives several implications related to the early algebra education, especially the teaching methods of variables.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제60권3호
• /
• pp.249-264
• /
• 2021

이 연구는 사회문화적인 관점에서 경과시간이라는 수학적 대상을 구현하는 기표를 통해 학생들의 경과시간 이해를 탐색하였다. 연구 결과, 학생들은 주어진 기표에 따라 차별화된 방식으로 경과시간 과제를 수행하고 있음이 확인되었고, 개별적으로 구성된 학생들의 경과시간 구현 기표 수형도는 이들이 특히 아날로그 시계 기표에서 경험하는 차별화된 과제 수행을 설명해주었다.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제51권1호
• /
• pp.21-45
• /
• 2012

The purpose of the study was to investigate how students understand each operations with whole numbers and fractions, and the relationship between their knowledge of operations with whole numbers and conceptual understanding of operations on fractions. Researchers categorized students' understanding of operations with whole numbers and fractions based on their semantic structure of these operations, and analyzed the relationship between students' understanding of operations with whole numbers and fractions. As the results, some students who understood multiplications with whole numbers as only situations of "equal groups" did not properly conceptualize multiplications of fractions as they interpreted wrongly multiplying two fractions as adding two fractions. On the other hand, some students who understood multiplications with whole numbers as situations of "multiplicative comparison" appropriately conceptualize multiplications of fractions. They naturally constructed knowledge of fractions as they build on their prior knowledge of whole numbers compared to other students. In the case of division, we found that some students who understood divisions with whole numbers as only situations of "sharing" had difficulty in constructing division knowledge of fractions from previous division knowledge of whole numbers.

• East Asian mathematical journal
• /
• 제31권2호
• /
• pp.211-244
• /
• 2015

The arithmetic operation have double-sided character. One is calculation as a process, the other is understanding in results as an outcome of the operation. We harbored suspicion on students' misunderstanding in an outcome of the operation, because the curriculum has focused on the calculation, as a process of arithmetic operation. This study starts with the presentation of this problem, we tried to find the recognition ability and character in the arithmetic operation. We researched the recognition ability for 7th grade 27 students who have enough experience in arithmetic operation when studying in elementary school. And we had an interview with 3students individually, that has an error in understanding in results of arithmetic operation but has no error in calculation. We focused on 3students' detailed appearance of the ability to understand in results of arithmetic operation and analysed the changing appearance after recommending unit record using operation expression. As a result, we could find the abily to underatanding in results of arithmetic operation and applicability to recommend unit record using operation expression. Through these results, we suggested educational implications in understanding in results of arithmetic operation.

• 한국초등수학교육학회지
• /
• 제1권1호
• /
• pp.33-52
• /
• 1997

현재 우리나라에서는 제7차 교육과정 개정부터 열린 교육의 일환으로 수준별 수학 교과서를 제작하기로 하고 여러 가지 준비를 하고 있다. 본고에서는 이러한 수준별 수학 교과서가 가장 잘 운영되고 있는 영국의 초등학교 수학 교과서를 분석 연구하였다. 분석 대상 교과서는 1996년 연구자가 영국을 방문하여 구한 수학 교과서 중 제1, 3, 4, 5 단계에 해당한다.

• 대한수학교육학회지:수학교육학연구
• /
• 제14권3호
• /
• pp.283-304
• /
• 2004

본 논문은 1년 동안 학생중심 수학교실문화를 구현하려고 노력하는 3명의 초등학교 교사들을 대상으로 6개의 수학교실문화를 분석함으로써 교사중심에서 학생중심의 문화로 바꿔나가는 과정을 상세하게 탐색한다. 연구대상 교실 모두에서 일반적인 사회적 규범과 관련하여 학생중심 교수법의 전형적인 양상이 구현된 반면에, 사회수학적 규범과 수학적 관행 측면에서는 학생들의 아이디어가 수학적 담화와 활동의 중심이 되는 정도에 따라서 유사성보다는 차이점이 부각되었다. 이러한 연구 결과를 바탕으로 수학교실문화 개선의 난제, 사회수학적 규범과 수학적 관행의 중요성, 교사의 역할 등에 관해 논의한다.

• 한국수학교육학회지시리즈C:초등수학교육
• /
• 제7권2호
• /
• pp.85-99
• /
• 2003

In this paper, firstly examined various proofs types that cover informal empirical justifications by Balacheff, Miyazaki, and Harel ＆ Sowder and Tall. Using these theoretical frameworks, justification activities by 5th graders were analyzed and several conclusions were drawn as follow: 1) Children in 5th grade could justify using various proofs types and method ranged from external proofs schemes by Harel & Sowder to thought experiment by Balacheff This implies that children in elementary school can justify various mathematical statements of ideas for themselves. To improve children's proving abilities, rich experience for justifying should be provided. 2) Activities that make conjectures from cases then justify should be given to students in order to develop a sense of necessity of formal proof. 3) Children have to understand the meaning and usage of mathematical symbol to advance to formal deductive proofs. 4) New theoretical framework is needed to be established to provide a framework for research on elementary school children's justification activities. Research on proof mainly focused on the type of proof in terms of reasoning and activities involved. But proof types are also influenced by the tasks given. In elementary school, tasks that require physical activities or examples are provided. To develop students'various proof types, tasks that require various justification methods should be provided. 5) Children's justification type were influenced not only by development level but also by the concept they had. 6) Justification activities provide useful situation that assess students'mathematical understanding. 7) Teachers understanding toward role of proof(verification, explanation, communication, discovery, systematization) should be the starting point of proof activities.

• 대한수학교육학회지:수학교육학연구
• /
• 제8권2호
• /
• pp.651-662
• /
• 1998

Mathematics is means for making sense of one's experiential world and products of human activities. A usefulness of mathematics is derived from this features of mathematics. Keeping the meaning of situations during the mathematizing of situations. However, theories about the development of mathematical concepts have turned mainly to an understanding of invariants. The purpose of this study is to show the possibility of computer in representing situation and phenomena. First, we consider situated cognition theory for looking for the relation between various representation and situation in problem. The mathematical concepts or model involves situations, invariants, representations. Thus, we should involve the meaning of situations and translations among various representations in the process of mathematization. Second, we show how the process of computational mathematization can serve as window on relating situations and representations, among various representations. When using computer software such as ALGEBRA ANIMATION in mathematics classrooms, we identified two benifits First, computer software can reduce the cognitive burden for understanding the translation among various mathematical representations. Further, computer softwares is able to connect mathematical representations and concepts to directly situations or phenomena. We propose the case study for the effect of computer software on practical mathematics classrooms.