• Communications of Mathematical Education
• /
• v.23 no.2
• /
• pp.429-459
• /
• 2009

The purpose of this study was to help the students deepen their mathematical understanding and practitioner improve her mathematics lessons. The teacher-researcher developed mathematical situation based problem solving instruction model which was modified from PBL(Problem Based Learning instruction model). Three lessons were performed in the cycle of reflection, plan, and action. As a result of performance, reflective knowledges were noted as followed points; students' mathematical understanding, mathematical situation based problem solving instruction model, improvement of mathematics teachers.

• Journal of The Korean Association For Science Education
• /
• v.43 no.3
• /
• pp.253-263
• /
• 2023

This study explored the discrepancy between the text of a teacher's guide about straight and reflective light and the content knowledge of pre-service elementary teachers. A total of 455 questions and 543 answers generated by 279 pre-service elementary teachers after reading a 'Shadow and Mirror' unit in the teacher's guide were analyzed. The questions were classified according to the types of concepts and discrepancies, and the answers were analyzed for accuracy. The results of analyzing the concepts of questions revealed that the pre-service elementary teachers were most curious about the shadow in the straight concept, the mirror image in the reflection concept, and the light source in other concepts. The questions with a low correct answer rate due to incorrect- or non-answers, such as those concerning the superposition principle of light by reflection, the principle of experimental tools, and images by lenses, were only partially or not included in the teacher's guide. When the questions were classified according to the type of discrepancy, the frequency of questions due to knowledge deficit was higher than that due to knowledge clash. This demonstrates that the concepts that teachers need to know must be supplemented with the contents of the teacher's guide. Discrepancies due to knowledge clashes are often caused by conflicts between what is experienced in everyday life and what is presented in textbooks. Therefore, it is necessary to reduce the discrepancy between the texts of the teacher's guide and the knowledge of pre-service elementary teachers by including the differences between the actual context of everyday life and the context of the textbook in the teacher's guide.

• Journal of the Korean School Mathematics Society
• /
• v.24 no.4
• /
• pp.327-348
• /
• 2021

This study examines the effects of mathematics learning mentoring activities on mathematical knowledge for teaching (MKT) of pre-service mathematics teachers. We choose six pre-service mathematics teachers in the department of mathematics education at M University. The pre-service mathematics teachers conducted 1:1 mathematics learning mentoring for two hours at a times and twice a week for 15 weeks. The pre-service mathematics teachers submitted the mentor log, which recorded weekly learning and emotional observations. We collected the mentor log and the reflection log of pre-service mathematics teachers and the interviews with pre-service mathematics teachers. Based on the collected data, we analyzed the effects of MKT, the understanding of students, and pre-service mathematics teachers' introspection by mathematics learning mentoring. We obtained conclusions as follows. First, mathematics learning mentoring provides an opportunity for pre-service mathematics teachers to apply the theory of mathematical education to schools. Thus pre-service mathematics teachers express theoretical knowledge as practical knowledge. Second, mathematics learning mentoring helps pre-service mathematics teachers have the ability to understand students and provide opportunities to reflect on their attitudes as learners. Third, mathematics learning mentoring helps advance teaching activities by providing pre-service mathematics teachers with opportunities to reflect on their teaching activities. Finally, mathematics learning mentoring has positively influenced the change in pre-service mathematics teachers' beliefs and teaching intuition.

• The Journal of Korean Association of Computer Education
• /
• v.13 no.6
• /
• pp.23-34
• /
• 2010

The PCK of teachers about informatics subject, which is viewed as one of required subjects in today's information society, is linked to what and how to teach, and that is very significant in terms of academic education. However, there are currently no efforts to develop items geared toward evaluating the PCK of teachers about informatics subject or to make a factor analysis of those items, though the importance of that subject in information society has been discussed. The purpose of this study was to develop and validate an instrument to size up the PCK of preservice elementary teachers about informatics subject. The finalized instrument consisted of 39 items regarding five factors that involved knowledge of curriculum, knowledge of expression, knowledge of content, knowledge of evaluation and knowledge of teaching methods.

• Communications of Mathematical Education
• /
• v.14
• /
• pp.27-41
• /
• 2001

인지적으로 안내된 교수(CGI)는 학생들의 수학적 사고(특히, 비형식적 지식)의 발달; 그러한 발달에 영향을 미치는 교수; 교수 실제에 영향을 미치는 교사의 지식과 신념들; 교사의 지식, 신념들, 실제들이 학생들의 수학적 사고에 대한 이해에 의해 영향을 받는다는 점에 초점을 둔 통합된 연구 프로그램이다. 본 논문에서는 아동의 비형식적인 지식을 중시하는 최근의 연구들을 고찰하고, CGI를 위한 수업을 어떻게 조직하며, 그러한 교수법이 수업을 어떻게 진행할 것인지에 대한 구체적이고 명확한 지침을 제공하지 않으므로 CGI를 적용하는 교실들의 유사점을 살펴본다. 그리고, 마지막으로 최근의 연구들을 고찰함으로써 CGI의 효과를 알아본다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2024.05a
• /
• pp.772-773
• /
• 2024

의미적 정보까지 학생 모델에게 학습시키기 위한 지식 증류 기법은 많이 논의되어 왔다. 그러나 학생 모델의 용량이 교사 모델의 용량에 비해 부족함에서 발생하는 의미적 정보 손실에 대한 논의는 아직 진행되지 않았다. 본 논문에서는 의미적 정보의 최소 단위를 교사 모델의 레이어로 설정하여 학생 모델이 지식 증류를 시작하기 전 최적의 지식 증류 대상을 설정하는 최적 은닉층 선정 알고리즘을 제시한다.

• The Journal of the Korea Contents Association
• /
• v.10 no.7
• /
• pp.244-252
• /
• 2010

The purpose of this study was to provide the fundamental data for further developments of the school dental clinic program through evaluating oral health knowledge, status and attitude of school dental program subjected on teachers who had experienced the program. The subjects were total 186 teachers from 8 elementary school in Ulsan metropolitan city area that had been operating school dental clinic program from 1999 to 2005. For the teachers by school and period of operation, the level of knowledge and behavior of oral health were no difference, however the recognition and behavior level in shorter operation group were higher, the level of recommend other school was higher than previous research. The efforts for further development school dental clinic program associated with advanced countries should be emphasized including the higher interests, more active participation and strengthened education. The systematic supports would be also important.

• School Mathematics
• /
• v.10 no.3
• /
• pp.423-441
• /
• 2008

The purpose of this study was to examine the Pedagogical Content Knowledge(PCK) of teachers and their educational practice in the category of plane figure, to make a comparative analysis of their PCK and educational practice, and to discuss the relationship between their PCK and the characteristics of their instruction. Instruction of four selected elementary school teachers was analyzed to find out their educational practice. In conclusion, the characteristics of the PCK and actual instruction of the teachers could be listed as below: First, as a result of comparing their PCK and educational practice on plane figure by applying selected analysis criteria, there was a close correlation between their PCK and actual instruction. Second, the teachers had various levels of PCK on different areas. Especially, there was a large disparity in mathematical content knowledge and knowledge of teaching methods. Third, the teachers who had plenty of PCK were more excellent in textbook reconstructing, and those who fell behind in terms of PCK were more reliant on textbooks as if the textbooks had been the Bible.

• Journal of Educational Research in Mathematics
• /
• v.26 no.3
• /
• pp.421-442
• /
• 2016

This study analyzed characteristics which emerged while 38 secondary school teachers observed a video clip about a centroid of triangles instruction. The aim of this study based on the analysis was to deduce implications in terms of the various means which would enhance teachers' knowledge in teaching mathematics and assist in designing mathematics education programs for teachers and professional development initiatives. To achieve this goal, this research firstly reviewed previous studies relevant to the 'Knowledge Quartet' as a framework of analyzing teachers' knowledge in mathematics instructions. Secondly, this study probed the observation results from the teachers in the light of the KQ. Therefore, some issues in the teacher education program for teaching mathematics were thirdly identified in the categories of 'Foundation', 'Transformation', 'Connection', and 'Contingency' based on the analysis. This research inspires the elaboration of what features have with regard to effective teachers' knowledge in teaching mathematics through the analyzing process and additionally the elucidation of essential matters related to mathematics education on the basis of the analyzed results.

• Communications of Mathematical Education
• /
• v.15
• /
• pp.127-128
• /
• 2003

본 고에서는 교육대학의 3학년에 재학 중인 예비 초등교사들이 학생으로, 교생으로의 자신들의 경험을 중심으로 기술한 내용을 토대로 그들의 관점에서 본 수학에 대한 생각과 유능한 수학교사의 특징에 대하여 조사하였다. 이들 예비교사의 관점에서 보면 유능한 수학교사는 수학교과에 대한 수학 지식은 물론이고 수학교수에 대한 열정과 함께 학생들에 대한 관심과 사랑을 가지고 있어야한다.