• Communications of Mathematical Education
• /
• v.21 no.2 s.30
• /
• pp.153-176
• /
• 2007

The purpose of this paper is to analyze teaching-learning program which can be applied to mathematically gifted students in primary school, Our program is based on constructivist views on teaching and learning of mathematics. Mainly, we study the algorithmic thinking of mathematically gifted students in primary school in connection with the network problems; Eulerian graph problem, the minimum connector problem, and the shortest path problem, The above 3-subjects are not familiar with primary school mathematics, so that we adapt teaching-learning model based on the social constructivism. To achieve the purpose of this study, seventeen students in primary school participated in the study, and video type(observation) and student's mathematical note were used for collecting data while the students studied. The results of our study were summarized as follows: First, network problems based on teaching-learning model of constructivist views help students learn the algorithmic thinking. Second, the teaching-learning model based on constructivist views gives an opportunity of various mathematical thinking experience. Finally, the teaching-learning model based on constructivist views needs more the ability of teacher's research and the time of teaching for students than an ordinary teaching-learning model.

• Journal of the Korean School Mathematics Society
• /
• v.7 no.2
• /
• pp.81-97
• /
• 2004

This paper is a study on the understanding process of「Matrix and Graph」on discrete mathematics using TI-92 calculator. For this purpose, we investigated the understanding process of two middle school students learning the concepts of matrix and graph using TI-92 calculator. In this process, we collected qualitative data using recorder and video camera. Then we categorized these data as follows: students' attitude related to using technology, understanding process of meaning, expression and operation of matrix and graph, mathematical communication, etc. From this, we have the following conclusions: First, students inquired out the meaning and role of matrix by themselves using calculator. We could see that calculator can do the role of good learning partner to them. Second, students realized their own mistakes when they used calculator on the process of learning matrix. So we found that calculator could form the self-leading learning circumstance on learning matrix. Third, calculators reinforce the mathematical communication in learning matrix and graph. That is, calculator could be a good mediator to reinforce mathematical communication between teacher and students, among students on learning matrix and graph.

• Communications of Mathematical Education
• /
• v.14
• /
• pp.327-348
• /
• 2001

본 연구는 수학 교사가 수학 교과에 대한 학습부진 학생의 이해와 적절한 교수-학습 방법의 탐색을 위한 기초 자료를 제공하기 위해 두 가지 유형의 질적 자료를 중심으로 자료를 수집하고 심리검사, 일반 학습습관, 수학 학습습관, 수학 교과에 대한 태도 등 4가지 선문지를 사용하여 여고생을 대상으로 부진요인 분석에 그 목적을 두었다. 본 연구에 따르면 대표적인 부진 요인은 의문 해결을 위한 의지 결핍과 장기 기억방법을 알지 못하고 수학교과목 자체를 싫어하는 경향이 있는 듯 하였다. 스스로 수학 문제를 풀 수 없다는 선입감 때문에 해답을 보고 문제를 풀게 되고, 검산을 하지 않는 특성을 보였다. 이들 수학 학습부진 학생들을 지도할 때는 선수학습을 반드시 확인하는 수업을 고려해야 하며, 수학적 의사 소통 능력 등 보다 수학적인 내용과 과정에 대한 후속 연구가 필요하다고 본다.

• Communications of Mathematical Education
• /
• v.10
• /
• pp.169-188
• /
• 2000

급변하고 있는 정보화시대애서 수학교육은 예전의 암기식, 주입식에서 벗어나 새롭게 변화될 필요가 있다. 컴퓨터 매체가 수학교육에 도입된 결과 수학 내용과 수학을 이해하는 방법, 교수 ${\cdot}$ 학습 방법을 변화시키고 있으며 교수 ${\cdot}$ 학습이 일어나는 사회 ${\cdot}$ 문화적 환경을 변화시키고 있다. 학생들이 컴퓨터 테크놀러지를 이용해 수학적 이해를 얻고 수학적 힘을 길러 의사소통자, 문제해결자가 되도록 도와야 한다. 또한 실생활적인 맥락에서 상황화되는 중요한 아이디어를 동시에 가르침으로써 효율성을 성취하고 내용적 과잉을 극복하고 새 수학의 혁신, 다양성, 연속적 성장을 체계적으로 지지해야 한다. 이 글에서는 학생들의 개념적 이해와 문제해결을 돕기 위해 테크놀러지의 역할을 조명해보고 DERIVE(TI-92)를 이용한 수학 학습 예시를 제시하고자 한다.

• Communications of Mathematical Education
• /
• v.13 no.1
• /
• pp.317-335
• /
• 2002

수학학습은 교과 수업시간을 통해서 뿐만 아니라, 자연과 문화 속에 내재된 수학적 원리와 법칙은 관찰이나 탐구를 통하여 습득하거나, 일상생활의 활동과 놀이를 통하여 수학적 개념 및 결과와 관련된 심상이 형성될 수도 있다. 따라서, 계획적으로 잘 구성된 놀이활동을 통하여 수학에 대한 흥미와 호기심을 유발하고, 사고의 유연성과 직관력을 경험하게 함으로써 교육현장에서 교사와 학습자간에 원활한 의사소통이 가능한 학습효과를 기대할 수 있다. 이와 관련하여 본 연구에서는 놀이 활동을 통하여 수학적 경험을 가능하게 하는 활동유형을 탐색하고, 수학의 본질이 잘 고려된 특기 ${\cdot}$ 적성교육 교수-학습 자료 개발 및 이를 활용한 교수-학습 모형을 제시하고자 한다.

• Journal of the Korean School Mathematics Society
• /
• v.12 no.4
• /
• pp.493-508
• /
• 2009

This study investigates aspects of the zone of proximal development (ZPD), the distance between the actual development and the potential development. Out of 18 university students taking a geometry course, two students with the same actual developmental level in the van Hiele model in the pre-test and post-test were interviewed for measuring their potential developmental level. Based on the communicational approach to cognition, the characteristics of the two interviewees' discourse on 3D reflective symmetry were identified. There were considerable differences between the two interviewees in terms of their potential developmental level. Methodological implications for how to investigate students' ZPD in mathematics education research were addressed.

• Journal of Educational Research in Mathematics
• /
• v.12 no.4
• /
• pp.443-455
• /
• 2002

정보화시대를 맞아 어느 때보다도 활발히 전교과에 걸쳐 학생의 의사소통의 능력을 향상하기 위한 다양한 방법이 모색되고 있다. 학교현장의 수학교육자는 수학교수-학습에서 어떤 상호작용이 일어났는지, 특히 다루기 쉬운 도구로써 계산기가 주어졌을 때 어떻게 학생의 지식 발달이 언어적 상호작용에서 이루어지는지를 알아야 한다. 본 연구는 이러한 학생의 상호작용을 분석할 때 필요한 분석도구를 개발하는 것이다. 예비연구와 본 연구를 통해 언어적 상호작용의 구성요소가 세 영역, 즉, 지식구성 진술, 사회적 상호작용 진술, 그리고 교사의 교육어 진술에서 개발되었다. 본 연구에서 개발한 자료를 이용하여 특히 학생의 지식 구성 발달에 따른 상호작용의 구성요소의 특징을 파악하고 이에 필요한 언어적 상호작용의 역할과 활성화 방안을 모색하는 연구가 가능하다.

• The Mathematical Education
• /
• v.46 no.4
• /
• pp.423-443
• /
• 2007

Based on the framework of Huffered-Ackles, Fuson and Sherin(2004), data were analyzed in terms of 3 components: explaining(E), questioning(Q) and justifying(J) of students' mathematical concepts and problem solving in a math classroom. The students used varied presentations to explain and justify their mathematical concepts and ideas. They corrected their mathematical errors or misconceptions through discourses. In addition, they constructed and clarified their concepts and thinking while they were interacted. We were able to recognize there was a special feature in discourses that encouraged the students to construct and develop their mathematical concepts. As they participated in math class and received feedback on their learning, the whole class worked cooperatively in a positive way. Their discourse was improved from the level of the actual development to the level of the potential development and the pattern of interaction moved from ERE(Elicitaion-Response-Elaboration to PD(Proposition Discussion).

• Journal of Educational Research in Mathematics
• /
• v.21 no.1
• /
• pp.33-55
• /
• 2011

This study explores the characteristics of calculus students' and instructors' discourses on the derivative using a communicational approach to cognition. The data were collected from surveys, classroom observations, and interviews. The results show that the instructors did not explicitly address some aspects of the derivative such as the relationship between the derivative function (f'(x)) and the derivative at a point (f'(a)), and f'(x) as a function, and that students incorrectly described or used these aspects for problem solving. It is also found that both implicitness in the instructors' discourse, and students' incorrect descriptions were closely related to their use of the word, "derivative" without specifying it as "the derivative function" or "the derivative at a point." Comparison between instructors' and students' discourses suggests that explicit discussion about the derivative including exact use of terms will help students see the relationship that f'(a) is a number, a point-specific value of f'(x) that is a function, and overcome their mixed and incorrect notion "the derivative" such as the tangent line at a point.

• The Mathematical Education
• /
• v.48 no.3
• /
• pp.329-352
• /
• 2009

The purpose of this study was to investigate the effects of small group cooperative communicative activities on the strategies for estimating measurement. To do this, two research questions were set as follow: First, are there any differences between strategies employed by students in the experimental group and the control group before and after the estimating measurement activities? Second, are there any differences between strategies employed by students in different ability levels(upper, middle, lower) of pre-estimating measurement test in the experimental group? The research results were drawn from the investigation as below: First, the strategical change of before and after the estimating measurement tasks in the experimental group was quite noticeable. Unlike the small strategical change in the control group, small group cooperative communicative learning resulted in a decrease of simple memorization and guessing strategies and an increase of refined strategies such as the standard strategy, clustering, unit load and so on. Second, mathematical communicative activities in a small group cooperative learning showed that the students in the upper level of pre-estimating measurement test used more refined strategies and the students in the lower level used simple memorization and guessing strategy more frequently. And through interaction in small group, students could have chances to recognize error of strategies and to modify and learn strategies. In conclusion, small group cooperative activities allowed students to have chances to communicate mathematically and it is a efficient way of helping students learn estimating measurement strategies.