• 한국학교수학회논문집
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• 제13권1호
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• pp.163-184
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• 2010

본 연구는 수학에 관한 편지 쓰기가 고등학생의 수학적 의사소통 및 성향에 미치는 영향에 대해서 알아보는데 있다. 고등학교 1학년 2개 학급을 대상으로 1개 반을 실험반으로 다른 1개 반을 비교반으로 나누어 2개월간 연구하여 그 결과를 분석하였다. 그 결과는 수학에 관한 편지 쓰기를 수학과 수업에 적용한 실험반이 교과서 중심의 학습 지도 방법을 적용한 비교반보다 수학적 의사소통 및 성향을 신장시키는데 효과적임이 나타났다. 실제로 수학에 관한 편지 쓰기를 통해 고등학생들은 성취감을 느끼고 반성적 사고를 하게 되며, 수학적 이해과정에 도움을 받는 것으로 나타났다. 또한 수학에 관한 편지 쓰기는 학생들이 학습태도를 긍정적으로 바꾸며 수업에 적극적으로 참여하게 하였다. 그러나 자신의 생각이 노출되는 것에 대한 부담을 느끼는 것으로 나타났다. 후속연구에서는 충분한 사전 조사로 수학에 관한 편지 쓰기의 횟수와 시간을 잘 결정하고 연구 기간을 충분히 잡아 학생들의 변화를 지속적으로 관찰하며 평가와의 연계로 학생들의 적극적인 참여를 유도할 필요가 있다고 본다.

• 한국수학교육학회지시리즈A:수학교육
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• 제56권1호
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• pp.1-17
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• 2017

The purpose of this study is to analyze the differences between the cognitive load of mathematics textbooks based on storytelling and traditional mathematics textbooks that are presented to students. In order to verify this, we have selected two 4th grade classes in elementary school that were identified as a homogeneous group through prior testing, and thus were separated into experimental group and comparative group. Then, without the teacher's lessons, the experimental group learned from mathematics textbooks based on storytelling and the comparative group learned from traditional mathematics textbooks. Afterwards, the two groups' cognitive load was measured through a questionnaire, and the following results were obtained: In the 'mental effort' and 'self evaluation' categories, the students that learned from the mathematics textbook based on storytelling showed higher scores than the students that learned from the traditional mathematics textbook. also there was statistically significant difference in some items. However, no statistically significant difference was found in the remaining categories 'task difficulty', 'self evaluation', and 'material design'.

• 한국수학교육학회지시리즈A:수학교육
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• 제58권1호
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• pp.21-39
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• 2019

This study examines the longitudinal effect of goal perception, mathematics class factors(perceptions about mathematics teachers (PMT), mathematics classroom attitude), and mathematics academic achievement. This study consists of three research models. First, we examined the longitudinal change of goal perception, perceptions about mathematics teachers (PMT), mathematics classroom attitude, and mathematics academic achievement using latent growth curve modeling. Secondly, the slope of PMT is a critical mediator between the slope of goal perception and the slope of mathematics academic achievement. Finally, the slope of mathematics classroom attitude is a critical mediator between the slope of goal perception and the slope of mathematics academic achievement. Data were extracted from Seoul Education Longitudinal Study from 2010 to 2012 (in three waves), and the analysis used by middle school students, measured by 4163 students of the three-wave surveys. Latent growth modeling was applied to verify the research problems. The results of the research are as follows. First, the slope of goal perception had positive and significant effects on the slope of PMT and mathematics classroom attitude, respectively. Second, the slope of PMT and mathematics classroom attitude had positively significant effects on the slope of mathematics academic achievement. Finally, it was confirmed that the slopes of PMT and mathematics classroom attitude are critical mediators between the slope of goal perception and the slope of mathematics academic achievement.

• Journal of applied mathematics & informatics
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• 제27권1_2호
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• pp.139-147
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• 2009

We study the neural network approximation to a function in $C^1$[0, 1] and its derivative. In [3], we used even trigonometric polynomials in order to get an approximation order to a function in $L_p$ space. In this paper, we show the simultaneous approximation order to a function in $C^1$[0, 1] using a Bernstein polynomial and a feedforward neural network. Our proofs are constructive.

• Journal of Applied and Pure Mathematics
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• 제6권1_2호
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• pp.13-20
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• 2024

Let R be a ring with involution. In the present paper, we characterize biadditive mappings which satisfies some functional identities related to symmetric Jordan (𝛼, 1)^*-biderivation of prime rings with involution. In particular, we prove that on a 2-torsion free prime ring with involution, every symmetric Jordan triple (𝛼, 1)^*-biderivation is a symmetric Jordan (𝛼, 1)^*-biderivation.

• 대한수학교육학회지:수학교육학연구
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• 제9권1호
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• pp.15-29
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• 1999

The purpose of this study is to investigate various mathematics education improvement or reform movements of Western Europe countries (United Kingdom, Germany, etc.) and the United States of America, to see the effects of those movements on Korean mathematics education circle, and to find a direction of Korean mathematics curriculum design. The third Korean mathematics curriculum was most affected by the new mathematics movement of the United States of America. This movement was emphasizing abstract structure, logical rigorousness and discovery learning of mathematics, which was fired from late fifties. Korean mathematics education circle imported the new mathematics early seventies from USA, but serious problems had been found at that time in USA. This study has pointed out that new math oriented Korean mathematics curriculum was not proper and the new mathematics itself was disastrous for most Korean students' learning. The study also points out that they hurried too much introducing the new mathematics and publishing new mathematics oriented textbooks but they had not sufficient teacher training programs. In our future mathematics curriculum reform, we have to remember such a historical lesson.

• 한국수학교육학회지시리즈A:수학교육
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• 제50권1호
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• pp.103-118
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• 2011

The study examined whether the relation between mathematics self-efficacy and mathematics achievement was partially mediated by the learning strategies, using latent growth model analyses. It was also examined the auto-regressive, cross-lagged (ARCL) panel model for testing the stability and change in the relation of mathematics self-efficacy and learning strategy over time. The study analyzed the first-year to the third-year data of the Korean Educational Longitudinal Survey (KELS). The result of ARCL panel model analysis showed that earlier mathematics self-efficacy could predict later learning strategy use. There were linear trends in mathematics self-efficacy, learning strategy, and mathematics achievement. Specifically, mathematics achievement was increased over the three time points, whereas mathematics self-efficacy and learning strategies were significantly decreased. In the analyses of latent growth models, the mediating effects of learning strategies were overall supported. That is, both of initial status and change rate of rehearsal strategy partially mediated the relation of mathematics self-efficacy and mathematics achievement. However, in elaboration and meta-cognitive strategies, only the initial status of each variable showed the indirect relationship.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제21권2호
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• pp.223-235
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• 2018

본 문헌연구에서는 수학불안을 주제로 국내외 연구 자료들을 분석하여 수학불안의 특징, 측정 방법, 발생원인, 치료방법 등 수학불안과 관련한 기존 연구 결과의 종합적인 고찰을 제공한다. 본 연구는 수학불안과 관련한 문헌 분석을 토대로 학생들의 수학불안 예방 및 치료 과정에 참여하는 초등학교 교사, 수학 교육 연구자들, 수학불안과 관련한 교육 정책 입안가들에게 초등학생의 수학불안에 대한 종합적인 이해를 제공하는데 목적이 있다. 본 연구에서는 수학불안과 관련한 국내외 연구들을 주제어를 중심으로 (1)수학불안이 초등학생의 학습 행동에 미치는 영향 (2) 수학불안 측정 도구 (3) 수학불안 형성 원인 (4) 수학 불안 감소 방안의 네 가지 범주로 구분하여 분석 결과를 제시한다. 본 연구에서는 각 범주별로 관련 연구들에 대한 간략한 설명과 연구의 결과, 그리고 이러한 연구들에 대한 종합적인 해석을 제공한다.

• 한국수학교육학회지시리즈A:수학교육
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• 제34권1호
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• pp.17-63
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• 1995

The exploration of Mathematics-learningmodel on the basis of Cognitive development The purpose of this paper is to sequenctialize Mathematics-learning contents, and to explore teaching-learning model for mathematics, with on the basis of the theory of cognitive development and the period of condservation formation for children. The Specific topics are as follows: (1) Systemizing those theories of cognitive development which are related to Mathematics - learning for children. (2) Organizing a sequence of Mathematics - learning, on the basis of experimental research for the period of conservation formation for children. (3) Comparing the effects of 4 types of teaching - learning model, on the basis of inference activity and operational learning principle. $\circled1$ Induction-operation(IO) $\circled2$ Induction-explanation(IE) $\circled3$ Deduction-operation(DO) $\circled4$ Deduction-explanation(DE) The results of the subjects are as follows: (1) Cognitive development theory and Mathe-matics education. $\circled1$ Congnitive development can be achieved by constant space and Mathematics know-ledge is obtained by the interaction of experience and reason. $\circled2$ The stages of congnitive development for children form a hierarchical system, its function has a continuity and acts orderly. Therefore we need to apply cognitive development for children to teach mathematics systematically and orderly. (2) Sequence of mathematical concepts. $\circled1$ The learning effect of mathematical concepts occurs when this coincides with the period of conservation formation for children. $\circled2$ Mathematics Curriculum of Elementary Schools in Korea matches with the experimental research about the period of Piaget's conservation formation. (3) Exploration of a teaching-learning model for mathematics. $\circled1$ Mathematics learning is to be centered on learning by experience such as observation, operation, experiment and actual measurement. $\circled2$ Mathematical learning has better results in from inductional inference rather than deductional inference, and from operational inference rather than explanatory inference.

• Journal of applied mathematics & informatics
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• 제12권1_2호
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• pp.59-66
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• 2003

The object of the present paper is to establish some criteria of the convergence of all bounded solutions of (1), (1').