• Journal of Educational Research in Mathematics
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• v.13 no.4
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• pp.495-506
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• 2003

In this study, 1 investigated some properties on the special hyper-dimensional figures made by the principle of the performance of equivalent forms representation. I supposed 2 definitions on the making n-dimensional figure : a cone type(hypercube) and a pillar type(simplex). We can explain that there exists only 6 4-dimensional regular polytopes as there exists only 5 regular polygons. And there are many hyper-dimensional figures, they all have sufficient condition to show the general Euler' Characteristics. And especially, we could certificate that the simplest cone type and pillar types are fitted to Pascal's Triangle and Hasse's Diagram, each other.

• Journal of the Korean School Mathematics Society
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• v.11 no.3
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• pp.399-420
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• 2008

In this paper we solve various triangle construction problems related with radius of escribed circle using algebraic method. We describe essentials and meaning of algebraic method solving construction problems. And we search relation between triangle construction problems, draw out 3 base problems, and make hierarchy of solved triangle construction problems. These construction problems will be used for creative mathematical investigation in gifted education.

• School Mathematics
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• v.10 no.4
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• pp.515-535
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• 2008

As part of developmental research of a student-teaching practicum program, this research analyzed a mathematics preservice teacher's questioning. The practicum program is based on the model of reflective practice in a collaborative inquiry community for learning-to-teach. This paper describes how a preservice teacher's questioning pattern had changed on the program participation and explain how the change in discourse can be considered as an indicator for the pre service teacher's professional development. Suggestions for the future program development are discussed.

• Journal of The Korean Association For Science Education
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• v.34 no.2
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• pp.63-78
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• 2014

Integrative STEM education is an engineering design-based learning approach that purposefully integrates the content and process of STEM disciplines and can extend its concept to integration with other school subjects. This study was part of fundamental research to develop an integrative STEM education program based on the science inquiry process. The specific objectives of this study were to review relevant literature related to STEM education, analyze the key elements and value of STEM education, develop an integrative STEM education model based on the science inquiry process, and suggest an exemplary program. This study conducted a systematic literature review to confirm key elements for integrative STEM education and finally constructed the integrative STEM education model through analyzing key inquiry processes extracted from prior studies. This model turned out to be valid because the average CVR value obtained from expert group was 0.78. The integrative STEM education model based on the science inquiry process consisted of two perspectives of the content and inquiry process. The content can contain science, technology, engineering, and liberal arts/artistic topics that students can learn in a real world context/problem. Also, the inquiry process is a problem-solving process that contains design and construction and is based on the science inquiry. It could integrate the technological/engineering problem solving process and/or mathematical problem solving process. Students can improve their interest in STEM subjects by analyzing real world problems, designing possible solutions, and implementing the best design as well as acquire knowledge, inquiry methods, and skills systematically. In addition, the developed programs could be utilized in schools to enhance students' understanding of STEM disciplines and interest in mathematics and science. The programs could be used as a basis for fostering convergence literacy and cultivating integrated and design-based problem-solving ability.

• Communications of Mathematical Education
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• v.12
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• pp.249-264
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• 2001

학교수학을 가르치고 배우는 과정에서 교사의 역할은 기술 공학의 활용으로 변화하고 있다. 기술공학의 역할은 학생들로 하여금 수학에 대한 태도를 변하게 하여, 탐구적이며 창의적인 방법으로 수학을 공부하는데 열의를 갖도록 한다. 반면에 현재의 수학교수는 여전히 보수적이며 환경의 변화에 더디게 적응하고 있으나, 세상이 상당히 빨리 변하고 있으므로 기술공학을 활용하여 현재의 교수를 개선해 나가야 하겠다. 변화에 대한 인식과 갈망은 학습자료, 재정 상태, 그리고 기타 여러 가지 요인보다도 훨씬 중요하며 가장 중요한 것은 교수관점 및 교수견해의 변화에 대한 의지이다. 교사가 기호연산 실행 조작이 가능한 수학 학습용 컴퓨터 응용 소프트웨어와 이들을 탑재한 휴대용 수학학습 전용기를 중등학교수학에 적용할 경우, 수학교육에서 신중히 고려해야 할 것은, 첫째 모든 수준의 학생들을 격려하며, 둘째 대상 영역의 수학학습 내용을 이해하도록 기술공학을 활용한 새로운 교수 기법에 접근할 수 있어야 한다는 점이다.

• Communications of Mathematical Education
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• v.10
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• pp.169-188
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• 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
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• v.18 no.3 s.20
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• pp.45-56
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• 2004

본고는 수학적 창의성과 관련한 논문으로 이를 창의적인 사람, 창의적인 산출물, 창의적인 과정이란 일반 창의성 연구자들이 연구하고 있는 분야로부터 유추적으로 논의를 시도하였다. 이런 접근으로부터, 얻을 수 있는 몇 가지 가정들은 다음과 같은 것이 있다. 첫 번째, 일반 보통아들을 대상으로 하는 공교육에서도 창의성 교육을 할 수 있으며, 이는 수학교과에도 적합한 진술이다. 두 번째, 현상학적 입장으로 부터 학교에서 교수${\cdot}$ 학습되고 있는 학교수학이 학생들 입장에서 보면 학습해야 할 필요가 있는 적절하고 새로운 지식이란 점을 공고히 해 주었다. 또한, 여기서 강조한 것은 새롭고 적절한 지식이 완성된 지식뿐만 아니라 발생상태 그대로의 지식 즉, 과정으로서의 지식도 포함하고 있음을 제안하였다. 세 번째, 수학자가 수학을 탐구하는 과정을 창의성 연구자들이 보듯이 인지과정으로 보는 대신에 한 수학적 아이디어를 이로부터 하나의 완성된 수학적 지식을 완성하기까지의 수학적 사고과정으로 보는 것이 수학교육적 의미에서 교수${\cdot}$ 학습에 의미가 있음을 살펴보았다.

• School Mathematics
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• v.19 no.1
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• pp.117-135
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• 2017

Even though patterns and correspondence serve a fundamental basis of function for elementary students, there has been lack of research in this field. This study explored prior studies to extract the key instructional elements on how to teach patterns and correspondence. This study then analyzed the unit of 'patterns and correspondence' in the mathematics textbooks in terms of four key instructional elements (i.e., relation to real-life contexts, diversity of pattern tasks, exploration for a correspondence relationship, and teaching variables). The results of this study showed that topics dealing with patterns and correspondence were represented with relation to real-life contexts but diversity of pattern tasks and exploration for a correspondence relationship were needed to be further considered in the textbooks. Another noticeable result was that teaching variables was not explicitly addressed in the textbooks. Based on these results, this study provides textbook writers with implications on what to further consider in dealing with patterns and correspondence.

• Journal of Educational Research in Mathematics
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• v.14 no.3
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• pp.221-237
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• 2004

This research analyzed mathematical discourse of the students in an RME-based differential equations course at a university in order to investigate the social transformation of the students' conceptual model of differential equations. The analysis focused on the change in the students' use of conceptual metaphor for differential equations and pedagogical factors promoting the change. The analysis shows that discrete and quantitative conceptual model was prevalent in the beginning of the semester However, continuous and qualitative conceptual model emerged through the negotiation of mathematical meaning based on the inquiry of context problems. The participation in the project class has a positive impact on the extension of the students' conceptual model of differential equations and increases the fluency of the students' problem solving in differential equations. Moreover, this paper provides a discussion to identify the pedagogical factors Involved with the transformation of the students' conceptual model. The discussion highlights the sociocultural aspect of teaching and learning of mathematics and provides implications to improve teaching of mathematics in school.

• Education of Primary School Mathematics
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• v.21 no.4
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• pp.375-395
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• 2018

This study examines the influence of the bodily interaction with digital technology on meaning-making process in a mathematical activity. Increasing interest in the use of multi-touch dynamic digital technology has brought the movement of the body to the center of research focus in recent mathematics education literature. Thereby, we investigate the process in which the meaning of the density of rational numbers emerges around the bodily interaction on the multi-touch dynamic digital technology. We analyze a case of a small group of primary school students with microethnography. In the result, the students formed the higher level of meaning of the density, where the finger movement of zooming in-and-out played a crucial role throughout the meaning-maknig process.