• Journal of Educational Research in Mathematics
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• v.27 no.3
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• pp.411-430
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• 2017

This study examined the understanding of 24 pre-service teachers about the three contexts for constructing the exponential graphs. The three contexts consisted of the infinite points context (2009 revision curriculum textbook method), the infinite straight lines context (French textbook method), and the continuous compounding context (2015 revision curriculum textbook method). As the result of the examination, most of the pre-service teachers selected the infinite points context as easier context for introducing the exponential graph. They noted that it was the appropriate method because they thought their students would easily understand, but they showed the most errors in the graph presentation of this method. These errors are interpreted as a lack of content knowledge. In addition, a number of pre-service teachers noted that the infinite straight lines context and continuous compounding context were not appropriate because these contexts can aggravate students' difficulty in understanding. What they pointed out was interpreted in terms of knowledge of content and students, but at the same time those things revealed a lack of content knowledge for understanding the continuous compounding context. In fact, considering the curriculum they have experienced, they were not familiar with this context, continuous compounding. These results suggest that pre-service teacher education should be improved. Finally, some of the pre-service teachers mentioned that using technology can help the students' difficulties because they considered the design of visual model.

• Journal of Educational Research in Mathematics
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• v.22 no.2
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• pp.163-178
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• 2012

The efforts to represent the numbers based on the decimal system give us fundamental understanding to construct and teach the concept network on the related knowledge of elementary and secondary school mathematics. In the process to represent natural numbers, integers, rational numbers, real numbers as decimal system, we will classify the extended decimal system. Moreover we will obtain the view to classify real numbers. In this paper, we will study the didactical significance of mathematical knowledge, which arise from process to represent real numbers as decimal system, starting from decimal system representation of natural numbers, and provide the theoretical base about the classification of real numbers. This study help math teachers to understand school mathematics in critical inside-measurement and provide the theore tical background of related knowledge. Furthermore, this study provide a clue to construct coherent curriculum and internal connections of related mathematical knowledge.

• School Mathematics
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• v.15 no.2
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• pp.353-367
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• 2013

A mathematics pre-service teacher T analyzed American mathematics textbooks and developed his teaching material for instruction. This study analyzed his thinking processes and results in the view of semiotics. If we regard the textbook as a sign and the unitary conversion that students should learn as an object of the sign, the interpretant of the sign is the pre-service teacher's analysis, which is conducted at the aspects of a subject matter knowledge and student understanding. T interpreted the textbook versatilely in terms of his knowledges and experiences. He developed his teaching materials as diagrams, did the diagrammatic thinking and became to have the hypostatic abstraction. This study is significant because it used semiotics for explaining T's thinking process.

• School Mathematics
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• v.15 no.4
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• pp.667-682
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• 2013

Though teachers' lesson plays, this article analysed teachers' knowledge for mathematical teaching about mathematical definitions and their pedagogical difficulties in teaching defining. Although the participant teachers didn't transmit definitions to students and suggested possible definitions of the given geometric figure in their imaginary lessons, they didn't teach defining as deductive organization of properties of the geometric figure. They considered mathematical definition as a mere linguistic convention of a word, so they couldn't appreciate the necessity of deductive organization in teaching definitions, and the arbitrary nature of mathematical definitions. Therefore, for learning to teach definitions differently, it is necessary for teachers to reflect the gap between the everyday and mathematical definitions in teachers'education.

• Journal of the Korean School Mathematics Society
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• v.7 no.1
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• pp.37-48
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• 2004

In this article we study on a mathematics(geometry) textbook which is written for the purpose of considering student's individual difference by famous russian author V. A. Gusev. We analyze text and exercise of the experimental textbook, form and extract some didactical ideas that help us to design individualized mathematics classroom activities with students.

• Proceedings of the Korea Contents Association Conference
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• 2018.05a
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• pp.531-532
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• 2018

본 연구의 목적은 인문학적 소양(liberal arts knowledge)과 연계한 무용교육의 전문적인 교수지식과 실행방법, 교육의 실천적 의미를 담는 무용교육 프로그램을 개발하는데 있다. PBL(Problem-Based Learning)을 적용한 역사콘텐츠와 문화재를 활용한 주제 중심의 무용교육 프로그램을 개발하였다. 그 결과 역사의 맥락을 접목한 12차시의 무용프로그램 개발, 내러티브 사고와 표현을 이끄는 교수 방법, 다양한 구성요소를 포함한 교육실행 모델을 제시할 수 있었다.

• Journal of The Korean Association For Science Education
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• v.40 no.5
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• pp.565-582
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• 2020

The purpose of this study is to investigate middle school science teachers' pedagogical content knowledge for science practice-based instruction developed by five middle school science teachers in a teacher learning community. Science teachers in this study collaborated to examine lesson plans and reflect on teaching practice and collaboratively analyzed science curriculum, discussed video-recordings of teaching practice, and discussed to design detailed and elaborated lesson plans. Data collection consisted of pre and post questionnaire and interview, audio-recording of teacher discussion in a teacher learning community for one year, lesson plans, teacher written reflection, and video-recording of teaching practice. Data analysis reveals that science teachers developed pedagogical content knowledge for science practice-based instruction that consists of eleven sub-components of knowledge of science curriculum for science practice, knowledge of science practice-based instructional strategy, knowledge of students' science practice-based learning, and knowledge of science practice-based learning assessment. Science teachers in this study developed highly structured pedagogical content knowledge for science practice-based instruction.

• School Mathematics
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• v.13 no.4
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• pp.675-696
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• 2011

This study was designed to understand PCK to improve professionalism of teachers and derive implications about proper teachings methods. For achieving these research purposes, different PCK and teaching methods in class of three teachers were compared and analyzed targeting arithmetic operation unit of fraction. For this study, criteria of PCK analysis of teachers was set, PCK questionnaires were produced and distributed, teachers had interviews, PCK of teachers were analyzed, two times fraction class was observed and analyzed, and PCK of teachers and their classes were compared. Followings are results to analyze PCK of teachers about fraction. In relation to PCK of three teachers, first of all, A teacher accurately understood concepts of fraction and learners' errors that may occur when they study fraction. Also, he(she) proposed concrete teaching strategies for fraction based on manipulated materials. B teacher also understood concepts of fraction and learners' errors accurately too. On the other hand, C teacher laid stress on knowledge to stress principles and taught that they are bases for every class. These results mean that self-training and inservice- training should be efficiently upgraded to improve PCK of teachers.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2010.05a
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• pp.140-157
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• 2010

하루가 다르게 변화되는 세계화의 물결 속에서 기술은 기업과 국가가 경쟁 우위를 확보하는 핵심적인 요인이라고 할 수 있다. 특히 기술의 Life cycle이 점점 짧아지는 요즘 시대에 기술적인 경쟁 우위를 확보하는 것이 생존의 필수적인 요인이다. 이러한 시대에 기업에서 요구되는 인력은 기술 혹은 과학적 지식을 보유하고 있는 것 뿐 만 아니라 경영학적 마인드와 함께 다양한 인문, 사회지식을 갖춘 융 복합형 인재를 선호하고 있다. 이러한 시대의 흐름에 맞춰 국내외 적으로 기술경영(Management of Technology)이 부각되고 있는데, 기술경영은 기술에 경영학적 방법론을 접목시키는 학제적인 분야로 오늘날 요구되는 실질적인 학문이라고 할 수 있다. 우리나라에서도 MOT 프로그램의 중요성을 인식하여 2006년부터 국가 차원에서 MOT프로그램을 지원하는 구체적인 방안을 도입했다. 그러나 늘어나는 기술경영분야 인재의 수요에도 불구하고 공급은 여전히 부족한 실정이다. 따라서 국내의 기술경영 인력 양성에 관한 교육 프로그램들을 우리보다 먼저 기술경영 교육을 실시하고 있는 해외 우수 프로그램과 비교 분석함으로써 앞으로 우리나라의 기술경영 교육 프로그램이 나아가야 할 발전적 방향을 제시하는 것은 의미가 있다고 할 수 있다. 비교 분석 결과, 기술경영 교육의 소속, 교수진의 확충, 관련 학부의 신설, 다양한 외부 활동 등이 프로그램 발전을 위해 필요한 것으로 확인되었다.

• Journal of Educational Research in Mathematics
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• v.25 no.3
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• pp.381-405
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• 2015

The nature of school mathematics has not been asked from the epistemological perspective. In this paper, I compare two dominant perspectives of school mathematics: ethnomathematics and didactical transposition theory. Then, I show that there exist some examples from Old Babylonian (OB) mathematics, which is considered as the oldest school mathematics by the recent contextualized anthropological research, cannot be explained by above two perspectives. From this, I argue that the nature of school mathematics needs to be understand from new perspective and its meaning needs to be extended to include students' and teachers' products emergent from the process of teaching and learning. From my investigation about OB school mathematics, I assume that there exist an intrinsic function of school mathematics: Linking scholarly Mathematics(M) and everyday mathematics(m). Based on my assumption, I suggest the chain of ESMPR(Educational Setting for Mathematics Practice and Readiness) and ESMCE(Educational Setting For Mathematical Creativity and Errors) as a mechanism of the function of school mathematics.