• School Mathematics
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• v.19 no.2
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• pp.319-343
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• 2017

In this study, we hope to reveal specialized content knowledge(SCK) and its features necessary to analyze student's errors and difficulties about the concept of irrational numbers. The instruments and interview were administered to 3 in-service mathematics teachers with various education background and teaching experiments. The results of this study are as follows. First, specialized content knowledge(SCK) were characterized by the fixation to symbolic representation like roots when they analyzed the concentration and overlooking of the representations of irrational numbers. Secondly, we observed the centralization tendency on symbolic representation and the little attention to other representations as the standard of judgment about irrational numbers. Thirdly, In-service teachers were influenced by content of students' error when they analyzed the error and difficulties of students. Lately, we confirmed that the content knowledge about the viewpoint of procept and actual infinity of irrational numbers are most important during the analyzing process.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.3
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• pp.1100-1108
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• 2013

This study analyzes the relationship between teachers' efficacy and difficulties on job performance depended on self-esteem. To achieve this goal, 282 child care teachers who inhabit J city responded to the questionnaire. The collected data were analyzed by Pearson correlation and multiple regression techniques using the SPSS statistics program. First, the self-esteem was closely associated with child care teachers' efficacy and difficulties on job performance. Second, the self-esteem was the strongest predictor for general teaching efficacy of child care teacher and Infant's protection and guidance also notable variables. This significant result shows the importance of self-esteem. Therefore, it is desirable to encourage child care teachers to experience and raise self-esteem.

• Journal of the Korean Chemical Society
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• v.58 no.6
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• pp.658-666
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• 2014

This study was designed to explore pre-service secondary science teachers' understanding and views of argument-based inquiry approach. Participants were 17 pre-service secondary science teachers enrolled in chemistry curricular materials and teaching methods course for majors in the college of education at a university in Seoul. Main data sources included each student responses to an open ended survey and individual interviews. Data analyses indicated that the pre-service teachers had very limited and biased understanding on scientific inquiry at the beginning of the semester. While the pre-service teachers understood that scientific inquiry should be an essential component of science teaching, a few pre-service teachers mentioned 'argumentation' or 'discussions' when they defined what scientific inquiry is. The majority of the pre-service teachers mentioned that science should be taught through scientific inquiry since science is inquiry itself. However, the pre-service teachers expressed several potential barriers and their concerns on implementing argumentation in scientific inquiry. While they concerned about students' lack of participation at the beginning of the semester, they concerned more about the teachers' ability of leading student argumentation at the end of the semester.

• Journal of The Korean Association For Science Education
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• v.29 no.5
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• pp.580-591
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• 2009

The purpose of this study is to get implications on teacher education curriculum according by analyzing pre-service secondary teachers' difficulties during student-teacher practice. Fifty-six pre-service secondary teachers were requested to write anecdotes about their student-teacher practice. Pre-service secondary teachers revealed that they had experienced the most difficulties relating to instruction teaching. They answered that they had especially comprehended inducing interest in diffcult learners, attention, appropriate composition of questions, and learners' understanding levels. Pre-service secondary teachers showed that they had tried to control students in experiment instruction. Also, they demonstrated that time for guidance counseling had been insufficient. They were dissatisfied with the content and level of counseling. Therefore, we need to improve teachers' college curriculum by performing student-teacher practice and feedback. We especially need to systematize teachers' college curriculum on the basis of developing standards of science teachers' expertise.

• Journal of Educational Research in Mathematics
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• v.26 no.1
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• pp.63-77
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• 2016

SENKs (Students who Emigrated from North Korea to South Korea) are exposed to the general problem of Su-Po-Ja(mathematics give-uppers) as well as their own difficulty in learning mathematics. In this study, we conducted the FGI (focus group interview) in order to examine the recognition on mathematics teaching and learning in South Korea with 6 SENKs and 3 teachers who teach the SENKs. As a result, it was found that SENKs' had difficulties in understanding math because of the differences in math terminology used in South and that in North Korea, the unfamiliar problem situation used in math lesson, and the shortage of time for solving math problem. And the teachers reported that they had difficulties in teaching great deal of basic math, SENKs' weak will to learn math, and SENKs' lack of understanding about problem situation because of the inexperience about culture and society in South Korea.

• Journal of the Korean Chemical Society
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• v.66 no.1
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• pp.42-49
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• 2022

Many elementary school teachers' lack of scientific knowledge reveal as several problems in teaching science. Thus, elementary school teachers need to improve their scientific knowledge, but there is the limit to improve the teachers' scientific knowledge through activities based on lecture that conducted in process of training and retraining them. Therefore, Improvement for training science teacher to improve scientific knowledge of elementary school teachers would be searched in this study. Depth interview was conducted toward three elementary school teachers, who had conducted action research, to improve content knowledge of material domain within teaching process and elementary school science. Based on result of the interview, difficulty and development that the three teachers were commonly experienced in process of conducting scientific inquiry in action research were analyzed. One of the difficulties of the inquiry were to figure out how the three teachers, who participated in the interview, understand specific concept, what they do not understand, and what they should study more to understand the concept. And there was a circumstance that the teachers did not know how to apply procedural knowledge, which learned explicitly in the process of setting plan for conducting research, into real context. Since there was difference between knowledge that they understand disjunctively and context that observed in real circumstance, they faced difficulty. However, the teachers conducted analysis of topic, planning research, conducting research, discussion of the result by themselves with those difficulties Thus, the teachers mentioned that not only content knowledge had been improved, but understanding of procedural knowledge, which is not intended to improve, had been also improved. Besides, they also mentioned that comprehensive understanding content knowledge, which they already understood, was also helpful. And the teachers suggest that if there were chance to discuss and examine the scientific practices by consisting of group with colleagues rather than conducting it individually it would more efficient studying. Considering their suggestion, direction of training elementary school teachers for improving their scientific knowledge should be improved in a way to understand science concepts based on direct research about context that is generated in circumstance of studying group of the teachers. Consequently, it would contribute to improvement of teaching science by combining teachers' practice and understanding.

• The Journal of the Korea Contents Association
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• v.21 no.5
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• pp.268-275
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• 2021

In special education, the operation of curriculum for students subject to special education is a role given to special teachers and integrated class teachers, and there are prior studies that many teachers experience difficulties in operating the curriculum. In this study, it was intended to find out the direction of special education courses and appropriate support measures for the operation of special education courses by exploring the experiences of special teachers and integrated class teachers, difficulties and suggestions in operating the curriculum. Participants in this study were special and integrated teachers with more than 15 years of experience, and all interviews were conducted in one-on-one in-depth interviews. After all the interviews have been prepared in full-length versions, the analysis has resulted in six major subjects and twelve subtopics; each teacher has different curriculum operations, difficulties in applying the curriculum, insufficient support systems, professional qualifications, and daily concerns of teachers in integrated classes. In the discussion, the direction of operation of special education courses for students and appropriate support measures for the operation of curriculum were discussed, and the limitations of research were presented and proposed.

• Journal of The Korean Association For Science Education
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• v.30 no.2
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• pp.291-303
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• 2010

The purpose of this study is to investigate the difficulties in engaging in open-inquiry activities of elementary pre-service teachers. Data were collected from in-depth interviews with 22 pre-service teachers and their open-inquiry products. The 22 pre-service teachers who participated in this study were enrolled in college openinquiry course and performed open-inquiry activities for fifteen weeks. The results of this study show that pre-service teachers struggled with several difficulties; selection of the subject, the lack of understanding about the science process skills and content knowledge, background knowledge, environment matters and self confidence about open inquiry. However, they thought open-inquiry is interesting in spite of much difficulties, and is necessary for science education.

• Journal of The Korean Association For Science Education
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• v.28 no.6
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• pp.507-518
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• 2008

The purpose of this study was to find out the difficulties of teaching the chapter on 'ight', experience of learning, teaching methods, and thinking types of 10 science teachers of the master's course in chemistry education. Discussion course for abduction thinking was carried out during 12 hours after the interview. Data were collected from individual interviews of 4 teachers among the 10 subjects and from the reports of the science teachers after the discussion course. From the data, it was found that most of the science teachers had suffered difficulty in teaching the chapter on light before the discussion course. Most of them had tried to teach drawing the path of light, but there was little teaching effect. Their teaching methods were similar to the method of what they had learned. During the course, the teachers recognized they could not see the path of light directly, and it needed inferring from image. From the abduction thinking, the teachers recognized the meaning of image and gained concrete methods in teaching students.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.263-268
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• 2005

본 연구의 목적은 한국과 미국에서의 초임 과학 교사 전문성 발달에 영향을 미치는 주요 요인을 비교? 분석하는 것이다. 참여교사는 한국 수도권 지역과 미국 중서부지역에서의 초임 과학 중등교사 각각 네 명이다. 자료는 수업관찰 및 녹화, 반구조화된 면담을 통해 수집하였으며, 수업맥락을 이해하기 위한 수업관련 자료와 학생 활동 자료도 같이 수집하였다. 연구 결과는 다음과 같다. 첫째, 공통적으로 전문성 발달에 영향을 미치는 요인은 추구하는 교사상과 평가, 시험대비와 같은 학교 맥락이었다. 또한 한국 초임 교사들에게는 과학교과서와 행정적인 업무와 같은 맥락적인 요인이 전문성 발달에 영향을 미친 반면, 미국 초임교사들은 교생실습에서의 멘터 교사의 영향을 많이 받았다. 둘째, 참여교사들이 공통적으로 느낀 어려움이나 관심은 수업 관리와 교과 내용지식을 넓히는 것이었다. 셋째, 모든 참여교사들은 전문성 발달을 위해 많은 노력을 하고 있었으며, 추구하는 교사상이 현재와 미래의 교수실천에 중요한 역할을 하고 있었다. 넷째, 미국 참여교사들은 교생실습 때의 멘터 교사에 크게 영향을 받는 반면, 한국 참여교사들은 멘터 교사보다는 다른 여러 가지 요인들에 의해 영향을 받은 것으로 나타났다.