• East Asian mathematical journal
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• 제39권5호
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• pp.493-503
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• 2023

Tendency prediction of daily confirmed cases is an important issue for public health authorities. To protect the tendency, we estimate the transmission rate of stochastic SEIR model for COVID-19 in Korea using particle Markov chain Monte Carlo method. The results show that the increasing and decreasing tendency of estimated transmission rate appear one or two days in advance compared to daily incidence cases, and as time evolves the standard deviation of the estimates of transmission rate reduces. Since ten months have passed since the first incident case of COVID-19 in Korea, we expect to forecast the tendency of daily confirmed cases for the next one or two days more accurately using our method.

• 영재교육연구
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• 제21권1호
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• pp.141-161
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• 2011

본 연구는 교육청 글쓰기 대회에서 수상하여 언어영재캠프에 참여한 초등학교 4, 5학년 학생들(60명)을 대상으로 언어창작영재들의 적성과 진로성향 및 진로성숙도를 알아보았다. 연구결과는 다음과 같다. 첫째, 다중지능 프로파일은 언어적성, 음악적성이 강점지능으로, 논리 수학적성이 약점지능으로 나타났다. 둘째, 우수적성은 음악적성과 언어적성으로 나타난 학생의 수가 많았고, 논리 수학적성이 가장 적었다. 논리 수학흥미와 논리 수학성취가 유의수준 p<.01.에서 상관이 있었다. 셋째, 진로성향은 언어성향과 인간친화성향의 학생이 가장 많았고, 음악적성, 자연친화적성, 인간친화적성은 우수적성과 진로성향에 있어 큰 차이를 보였다. 넷째, 과반수 이상(41명, 68%)의 학생이 조기 진로성숙의 특성을 보였다. 언어창작영재들의 성공적인 진로선택을 위해 우수적성에 어울리는 직업의 안내와 진로성향에 맞는 적성을 강화시키는 교육을 제공해야 할 것이다.

• 한국수학교육학회지시리즈A:수학교육
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• 제42권3호
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• pp.295-302
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• 2003

The purpose of this study is to make more reliable researches on the tendency of shirking from the mathematics by including those of the students in the other country, and there are a series of researches such as 'math-camp to raise the mathematical tendency of the students who make little progress in the study', 'establishment of factors causing the shirking tendency from the mathematics and development of the analyzing instruments for it' and 'study on the preference to each category of the school mathematics.' For this purpose, I used a test developed by the shirking tendency research team. I compared the average score and standard deviation between the Korean and the Australian students. As for the average score, that of the Australian elementary school students is about one point higher than the Korean students, and there was no remarkable difference in the deviation. Comparing the math-shirking tendency of the two groups, they show higher shirking tendency in the aspects of emotional and mathematical recognition that belong to the psychological and environmental sphere. And, as for an extent of association in difficulties according to each school grades, its degree of the Australian students is comparatively lower than that of the Korean students, therefore, the shirking tendency of the Australian students is intermediate level whereas that of the Korean students is the lowest. They show us a peculiar result in teacher factor. It is noteworthy in that the Korean students show a positive reaction in that factor, however, the Australian students show a comparatively weak reaction. It might be caused by a cultural difference. I also have compared the accumulated percentage according to each shirking tendency factors. It will not only be very efficient for teachers to establish a teaching plan but also a good data to understand the shirking tendency of each student. This will be a very good data for the planners of teaching policy to remedy the causes of shirking tendency. And, it will also be used effectively to write a new textbook. It has been uncommon that a psychological test is used in the research for the improvement of teaching and learning mathematics. In this aspect, I am sure that this study including the preceding research will be a good in studying the shirking tendency factors by using a psychological test. I believe that this research will be a help to grasp the outline of the shirking tendency and I will have to try continuously to make it be a reasonable and reliable study.

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

• 한국수학교육학회지시리즈A:수학교육
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• 제47권1호
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• pp.27-47
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• 2008

In this paper, we study the effect of writing activity as mathematical communication on the students's mathematics achievement, learning attitude, and mathematical tendency. For this purpose, we construct a experimental class and then analyze the students' change in those aspects after applying three-divided-note writing activity and colleague feedback on their works those students are in the experimental class. As a result of the experiment, we find that three-divided-note writing activity and colleague feedback made some significant changes on the students achievement in mathematics, learning attitude, but does not affect on mathematical tendency. We also offer some suggestions for further research. Firstly, the mathematical communication ability must be stressed in mathematics education. For this purpose, we need to develop the teaching and the evaluation method to use not only writing but also reading, speaking, and listening skills so that many teachers can apply this method easily to their classes. Second, we need to fix some realistic problems such as fair evaluation , the numbers of students per class, the numbers of lesson, and too much extra-work, and so on. Thirdly, we suggest to explore some methods for extending three- divided-note writing activity to evaluate mathematical essay and to study educational effects of colleague feedback on mathematics performance assessment.

• 한국수학교육학회지시리즈A:수학교육
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• 제26권2호
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• pp.9-13
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• 1988

Mathematics education is generally to cultivate mathematical thought. Most meaningful thought is to solve a certain given situation, that is, a problem. The aim of mathematies education could be identified with the cultivation of mathematical problem-solving ability. To cultivate mathematical problem-solving ability, it is necessary to study the nature of mathematical ability and its aspects pertaining to problem-solving ability. The purpose of this study is to investigate the relation between problem-solving ability and classficational viewpoint of mathematical verbal problems, and bet ween the detailed abilities of problem-solving procedure and classificational viewpoint of mathematical verbal problems. With the intention of doing this work, two tests were given to the third-year students of middle school, one is problem-solving test and the other classificational viewpoint test. The results of these two tests are follow ing. 1. The detailed abilities of problem-solving procedure are correlated with each other: such as ability of understanding, execution and looking-back. 2. From the viewpoint of structure and context, students classified mathematical verbal problems. 3. The students who are proficient at problem-solving, understanding, execution, and looking-back have a tendency to classify mathematical verbal problems from a structural viewpoint, while the students who are not proficient at the above four abilities have a tendency to classify mathematical verbal problems from a contextual viewpoint. As the above results, following conclusions can be made. 1. The students have recognized at least two fundamental dimensions of structure and context when they classified mathematical verbal problems. 2. The abilities of understanding, execution, and looking- back effect problem-solving ability correlating with each other. 3. The instruction emphasizing the importance of the structure of mathematical problems could be one of the methods cultivating student's problem-solving ability.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제36권1호
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• pp.59-72
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• 2022

본 연구는 수학적 모델링 활동을 수행할 수 있는 과제 개발과 이를 기반한 수업 설계의 중요성을 생각하여, 수학적 모델링에 대한 예비교사들의 내재된 인식을 바탕으로 그들이 설계한 수학적 모델링 기반 수업의 특징을 파악하는 데 목적이 있다. 그 결과 예비교사들이 개발한 수학적 모델링 과제는 주로 개념 활용 학습을 목적으로, 실생활 맥락의 소재를 활용한 적정량의 정보를 제시한 다소 구조화된 형태로, 이해, 의미, 개념과 연결이 있는 절차적 과정이 필요한 인지적 요구수준으로 개발된 경향을 보였다. 이를 바탕으로 설계한 수업은 대부분이 준비 활동, 모델 도출 활동, 모델 탐험 활동만을 유도한 경향이 있었다. 본 결과를 토대로 예비교사 교육에서의 시사점을 논의하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제43권2호
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• pp.139-149
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• 2004

This study was initiated by the idea to help students to be more ideally educated following the 7th curriculum that seeks the proactive students along with creativity for the 21st century. Mind-map was the main tool throughout the study and this was performed to find answers for the following questions : 1) to examine how students' drawing a mind-map affects their mathematical tendency or emotional aspects (motivation for study, interest, etc); 2) to investigate the types and characteristics of mind-maps that students draw; 3) to analyze advantages and obstacles that they experience during the process of drawing a mind-map and provide some suggestions for overcoming them. The research shows that students were highly motivated by the drawing a mind-map. There are types of mind-maps: tree shape and radial shape, and each shape has its own advantages. But the more important factor for being a good mind-map is where and how each concept is located and connected. Although it is true that drawing a mind-map helped students to see the bigger structure of what they learned, but there are several hardships taken care of. The study suggests to extend the experiment to various levels of students and diverse contents.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제25권1호
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• pp.79-97
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• 2011

본 연구에서는 그 동안 개발된 중등 수학영재를 위한 교수 학습자료를 최대한 수집하고, 수집한 자료들을 교수 학습 대상, 수학과 교육과정과의 관련성, 렌쥴리의 3부 심화학습 단계, 자료의 성격, 교육과정 역역 등의 5가지 유목에 대해 각 유목별로 세부영역을 두어 분류한 다음 개발 동향과 특정을 분석함으로써 앞으로 중등 수학영재를 위한 교수 학습자료를 개발할 때 발생할 수 있는 세부영역별 개발 빈도수의 편차를 줄이고 개발 자료의 질적 향상을 위한 참고자료를 제공하고자 한다.

• East Asian mathematical journal
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• 제32권4호
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• pp.545-563
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• 2016

The aim of this study was to observe processes and implication to a given program for the 20 gifted children grade 5 by making the number from 1 to 100 with natural numbers 4,4,9 and 9. Revelation of creativity, mathematical tendency of students and meaningful responses were observed by the qualitative records of this game activity and the analysis of result. The major result of a study is as follows: The mathematical creativities of students were revealed and developed by this activity. And the mathematical attitude were changed and developed, so student could actively participate. And students could experience collaborative and social composition learning by presentations and discussion, competition with a permissive atmosphere and open-game rule. It was meaningful that mathematical ideas (negative number, square root, factorial, [x]: the largest integer not greater than x, absolute value, percent, exponent, logarithm etc.) were suggested and motivated by students themselves.