• 한국수학교육학회지시리즈A:수학교육
• /
• 제46권1호
• /
• pp.81-96
• /
• 2007

This study was conducted to investigate the possibility of teaching tessellations' mathematical principles in elementary school mathematics. A survey was carried out and the two hours of the instructional experiment were developed for this study triangular tessellation activity and rectangular tessellation activity. Six fifth graders from W elementary school participated voluntarily in the instructional experiment. It was shown from the survey that teachers and students both know what the tessellation is, but they don't know what the mathematical principles really are in the tessellation. This is because they have just done the covering up-activities in class. It was seen from the instructional experiments that even ordinary students were able to understand the mathematical principles of the tessellation if teachers could throw the suitable focusing questions like 'how to move the rectangles making sides equal' and 'how to gather vertexes making angle $360^{\circ}$'. Furthermore, it is desirable to teach the rectangular tessellation prior to the triangular tessellation since the rectangular tessellation is more easy to deal with than the triangular tessellation.

• 한국학교수학회논문집
• /
• 제18권1호
• /
• pp.15-37
• /
• 2015

수학적 의사소통의 가치와 중요성이 인식되면서 수학교육에서 수학적 의사소통이 점점 강화되었다. 구어적 의사소통뿐만 아니라 문어적 의사소통 중 표현하기 방식인 쓰기 활동 역시 강조되고 있다. 한편, 2009 개정 수학과 교육과정에서는 수학적 개념을 자연스럽고 쉽게 학습하도록 스토리텔링 방법을 적용하고 있기 때문에, 초등학교 1학년 학생들이 이야기에 친숙하다는 점에 주목하였다. 이에 본 연구에서는 초등학교 1학년 학생들을 대상으로 이야기 쓰기에 초점을 맞추어 쓰기 활동 수준을 분석하고 이야기 쓰기 활동을 어떻게 인식하는지 살펴보고 시사점을 얻고자 하였다.

• 한국수학교육학회지시리즈E:수학교육논문집
• /
• 제31권3호
• /
• pp.257-277
• /
• 2017

본 연구의 주된 목적은 크게 두 가지로 나눌 수 있다. 첫째, 최근 수학적 모델링이 강조되는 상황에서 보로노이 다이어그램과 들로네 삼각분할을 주제로 영재교육을 위한 수학적 모델링 프로그램을 개발하는 것이다. 둘째, 본 연구에서 개발한 수학적 모델링 프로그램을 실제 영재교육 수업에 적용한 결과를 분석하여 수학적 모델링 수업을 설계하는 현직교사와 융합형 영재프로그램을 개발하는 영재교사에게 도움을 주고자 한다.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제43권4호
• /
• pp.419-440
• /
• 2004

The purpose of this paper is to know the effects on number and operation abilities of the 1st grade children of elementary school by applying teaching and learning activity throught communication. For this purpose, we have studied according to the following procedure. 1. We divised teaching and learning model through communication and applied in the actual teaching and learning activity. 2. We investigated the effects of number and operations abilities of the 1st grade children by applying teaching and learning activity through communication. To accomplish this purpose, we applied learning activity through communication to the 1st grade of 40 elementary school children for about six months(September 1, 1999 ～ February 20, 2000). In process of applying this model, we collected all sorts of cases in the children's learning activity and investigated children's response on learning activity through communication, interview with children and researcher's observation. We applied the model through communication in class and compared with the traditional learning. 1. In learning through communication, children could solve the problem in themselves with a sense of responsibility. 2. It was impossible to find out the degree of children's comprehension in the explanatory learning. But in the learning through communication, it was a great help to individualize and plan the learning because children express their ideas clearly. It has conclusion as follows. The learning activity through communication has effected on forming number and operations abilities of the 1st grade of elementary school children importantly. 1. Children have improved in the abilities through communication to express their own ideas. 2. Children have studied with a sense of responsibility not in the teacher-oriented learning but in the self-directed learning 3. Children could find out the mathematical concepts in themselves - correcting false concepts, reguiding concepts by errors, finding invisible errors, solving problems variously and knowing the easy method. 4. The activity through communication in mathematics was a base of children's individual learning and important data of next learning plan. 5. The mathematical concepts formed through communication had a high transfer of learning. 6. Children have taken pleasure of discovery and had affirmative attitude about mathematics learning. We can make sure that number and operations abilities of the 1st grade children are formed by applying teaching and learning activity through communication. However, help and control of teacher have to be with it.

• 한국수학교육학회지시리즈A:수학교육
• /
• 제57권4호
• /
• pp.413-431
• /
• 2018

In this study, I developed an activity oriented lesson to support the understanding of probabilistic and quantitative estimating population ratios according to the standard statistical principles and discussed its implications in didactical respects. The developed activity lesson, as an efficient physical simulation activity by sampling with replacement, simulates unknown populations and real problem situations through completely closed 'Closed Box' in which we can not see nor take out the inside balls, and provides teaching and learning devices which highlight the representativeness of sample ratios and the sampling variability. I applied this activity lesson to the gifted students who did not learn estimating population ratios and collected the research data such as the activity sheets and recording and transcribing data of students' presenting, and analyzed them by Qualitative Content Analysis. As a result of an application, this activity lesson was effective in recognizing and reflecting on the representativeness of sample ratios and recognizing the random sampling variability. On the other hand, in order to show the sampling variability clearer, I discussed appropriately increasing the total number of the inside balls put in 'Closed Box' and the active involvement of the teachers to make students pay attention to controlling possible selection bias in sampling processes.

• 한국초등수학교육학회지
• /
• 제12권2호
• /
• pp.165-183
• /
• 2008

본 연구에서는 초등수학에서 상호글쓰기를 통한 활동이 수학적 의사소통 능력 및 수학적 성향에 미치는 영향을 조사하고 분석하여, 이러한 상호글쓰기 활동이 수학적 의사소통 능력에 어떠한 영향을 미치는지 살펴보았다. 이를 위하여 상호글쓰기 학습을 적용하기 위한 기반을 조성하고, 3-나 수학과 교육과정을 분석하여 개념 형성 수업, 원리 발견 수업, 문제 해결 수업으로 분류하여 차시를 추출하고, 그에 맞는 상호글쓰기 학습지를 개발하여 적용하였다. 연구 결과, 첫째, 상호글쓰기 활동은 수학적 의사소통 능력의 영역 중 말하기(토의하기), 쓰기, 표상하기 영역에 있어서 효과적이었으며, 둘째, 학생들의 수학적 성향에 긍정적인 영향을 미치며, 특히 수학적 흥미, 수학을 공부하고자 하는 의지, 수학의 중요성을 깨닫고 필요하다고 느끼는 가치 부분에서 긍정적으로 효과가 있음을 알 수 있었다.

• 한국수학교육학회지시리즈E:수학교육논문집
• /
• 제35권2호
• /
• pp.193-212
• /
• 2021

본 연구는 학교현장의 수학탐구활동을 지원하기 위한 현장지원 연구이다. 수학탐구활동은 수학교사에게뿐 아니라, 학생에게도 매우 중요한 수학적 활동이다. '수학과제 탐구' 교과목이 생기고, 고교학점제, 자유학년제와 같은 다양한 수학적 활동이 강화되면서 이러한 경향은 더 강해지고 있다. 수학탐구활동은 전문수학자만의 고유영역이 아니며, 수학을 학습하는 그리고 수학을 지도하는 모든 평범한 사람에게도 동일하게 기회가 주어져 있다. 이에 본 현장지원 연구에서는 한 가지 수학적 사실을 기반으로 하는 구체적인 수학탐구활동을 기반으로, 현장 학교에서 교사 및 학생이 자발적으로 수행할 수 있는 수학탐구활동 방법을 제안하는 것을 연구의 목적으로 한다. 구체적으로 본 연구에서 선택한 한 가지 수학적 사실은 2015개정 수학과 교육과정에서 다시 추가된 내용요소인 코사인 법칙이다. 본 연구에서는 코사인 법칙을 기초로 여러 가지 수학탐구활동을 수행하였다. 이러한 수행 결과를 분석하여 현장에서 학교수학을 탐구하는 방법을 구체적으로 제안하였다. 본 연구의 결과를 통해 수학탐구활동이 수학교실에서 학생 및 교사에 의해 다양하고 활발하게 이루어지기를 기대한다.

• 충청수학회지
• /
• 제15권1호
• /
• pp.87-94
• /
• 2002

Trot(1999) considered how to calculate the expected area of a random triangle in the unit square $[0,1]{\times}[0,1]$. He used the Mathematica software package for the computational part. In this article, we study various aspects of the probability distribution of a triangle randomly chosen inside the circle of radius r. A simulation activity that can be conducted in statistics and probability classrooms is also considered.

• 한국수학교육학회지시리즈D:수학교육연구
• /
• 제10권3호
• /
• pp.229-238
• /
• 2006

During World War II there was a statistical analysis conducted by the Allied analysts to estimate the German war productions, including their tank productions. This article revisits the analysis of the tank productions as a classroom activity format. Various reformed ideas are proposed in order to enhance students' perspectives of the point estimation. Comprehensive simulation works and actual classroom discussions will be provided along with the theoretical investigations.

• East Asian mathematical journal
• /
• 제23권3호
• /
• pp.271-302
• /
• 2007

The purpose of this study is to study how effective teachers' self reflectiveness are on enhancing mathematics teaching activities. Researcher is the object of the study and relating preceding researches, establish some instruments for study. This research was examined for six times from fifth week of March to second week of May. In order to accomplish this study, one class of the first grade of high school in Ulsan was selected. In order to define the changes of teaching activity, the first lecture was practiced without analyzing or reflective activity. From the second lecture, analyze and reflect own teaching activity with recording. After finishing all lecture, distribute the recordings to observers and other teachers and then, get measured. Based on the results, self reflective teaching makes great effects on enhancing teachers' teaching activities. Through teachers' own reflective teaching, they can know their advantages and disadvantages, repeatable was of speaking, and the acknowledgement of objectives. And, finally, they can enhance their teaching activity by reflective teaching.