• Korean Journal of Child Education & Care
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• v.18 no.2
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• pp.231-246
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• 2018

The purpose of this study was to investigate early childhood special education teachers' experience, difficulties and need for effective disability understanding education in inclusive education field. The researcher interviewed 3 different early childhood special education teacher. Each participant was individually interviewed 2-3 times with deliberated questions for collecting data. After the interview was analyzed, the contents were categorized into three major themes and twelve sub themes. The three major themes were (1) early childhood special education teachers' difficulties in inclusive education field. (2) experience in the disability understanding education (3) need for proper disability understanding education. First, the teachers were awareness of the difficulties at the inclusive education field due to ambiguity in the role and location, the extension of the expertise, and the misaligned system. Second, teachers stated that the barriers to disability understanding education include creating prejudice, varied according to teachers ' abilities, poor perception of appropriate methods, and low concerns of adults and young children. Third, the results showed that development of the teaching manual, improvement of the administrative system, change in perception of disability understanding education, and disability understanding education based on the experiences of young children were necessary for effective disability understanding education. Based on these results, several specific implications for effective disability understanding education were suggested.

• Journal of Educational Research in Mathematics
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• v.21 no.1
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• pp.17-32
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• 2011

This study investigated pre-service teachers' understanding of statistical sampling. The researchers categorized major topics related to sampling into representativeness of samples, sampling variability, and sampling distribution, and selected concepts connected to each topic. Findings on this study are as follows: Even though most of the pre-service teachers considered the random sampling bringing unbiased outcomes as a proper sampling method, only 64% of them recognized that sample is a quasi-proportional, small-scale version of population; Few pre-service teachers understood that more important is the size of sample, not the portion of sample to population, and half of them appreciated that the number of sampling has a powerful effect on drawing of reliable results than the size of sample; Few pre-service teachers understood that sampling distribute is irrelevant to the shape of population and has a symmetrical bell-shape.

• 한국정보교육학회:학술대회논문집
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• 2007.08a
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• pp.322-327
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• 2007

2005년 12월 개정된 정보통신기술교육 지침에 따르면 컴퓨터의 과학적인 요소를 '정보처리이해' 단계에서 도입하였다. 자료구조와 알고리즘, 프로그래밍의 기초를 교육하도록 개정하였는데 현장 교사들이 그 내용을 잘 이해하지 못하고 있어 교육하기에 많은 어려움이 있다. 본 연구는 '정보처리이해' 과정을 가르치는데 도움이 되는 구체적인 웹문서를 검색 수집 정리 분류하여 ICT교사들에게 제공한다. 또한 ICT교사들이 참조한 웹문서에 대해 활용도를 평가하고 높은 점수의 웹문서를 상위에 링크시키는 다이나믹한 랭킹 시스템에 관한 설계이다.

• Education of Primary School Mathematics
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• v.26 no.4
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• pp.219-236
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• 2023

This study examined the relationship between preservice teachers' mathematical understanding and problem posing in fractions multiplication and division. To this purpose, 41 preservice teachers performed visual representation and problem posing tasks for fraction multiplication and division, measured their mathematical understanding and problem posing ability, and examined the relationship between mathematical understanding and problem posing ability using cross-tabulation analysis. As a result, most of the preservice teachers showed conceptual understanding of fraction multiplication and division, and five types of difficulties appeared. In problem posing, most of the preservice teachers failed to pose a math problem that could be solved, and four types of difficulties appeared. As a result of cross-tabulation analysis, the degree of mathematical understanding was related to the ability to pose problems. Based on these results, implications for preservice teachers' mathematical understanding and problem posing were suggested.

• Journal of the Korean School Mathematics Society
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• v.12 no.2
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• pp.195-227
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• 2009

The study was designed to describe the pre service teachers' development of their TPCK throughout the teacher preparation program that integrated technology throughout the program and how they succeeded in teaching with technology in the actual classroom during student teaching. Multiple data sources were used to obtain information toward answering the research questions. Overall, the emphasis of the teacher preparation program in this study in helping preservice teachers to acquire TPCK transformed the preservice teachers' understanding described by the four components of TPCK. However, the diversity of beliefs, teaching, and technology background affected their understanding and development of TPCK throughout the program.

• Journal of Korean Elementary Science Education
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• v.31 no.1
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• pp.84-98
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• 2012

이 연구는 전하 이동을 강조한 튜토리얼을 통하여 초등 교사의 전기 개념 변화를 분석하고, 초등 교사 교육을 위한 시사점을 얻는데 있다. 튜토리얼은 사전검사, 워크시트, 사후검사로 구성되었고, 내용은 두 개의 대범주인 정전기 영역과 전류 영역으로 이루어졌다. 현직 초등 교사 68명에게 튜토리얼을 적용하고 선택형 질문지, 사전 검사, 사후 검사, 워크 시트, 튜토리얼 과정 녹화 전사본 및 면담을 통하여 초등 교사의 전기 개념 변화를 분석하였다. 연구 결과, 교사들은 도체와 부도체의 전기적 특성에 대해 이해하게 되었는데, 마찰과 유도, 접촉에서 전하들의 움직임을 고려하고 설명할 수 있게 되었다. 그러므로 대전과 전류를 혼동하는 어려움이 해소되었다. 열린 회로에서는 전압을 전하가 받는 힘을 고려하여 이해할 수 있게 되었고, 축전기를 통해 일시적 전하의 이동을 설명할 수 있었다. 이것은 전압이 전류의 결과라는 오개념을 과학적 개념으로 바꾸는데 중요한 역할을 하였다. 닫힌 회로에서는 전구 양단에 쌓이는 전하들의 분포를 강조함으로써 회로에서 전류가 소모되지 않고 일정함을 이해하게 되었고, 직렬과 병렬에서도 각 회로에서 전구 양단의 전하들의 분포를 고려함으로써 회로에 따라 전지의 역할이 달라짐을 이해할 수 있게 되었다.

• Journal of The Korean Association For Science Education
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• v.32 no.10
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• pp.1502-1523
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• 2012

Recently, there have been growing interest in teachers' professional development since teachers were regarded as a critical factor in the context of the reform efforts. Along with these efforts, educational researchers have continued to implement various programs to improve teachers' subject matter knowledge, beliefs, and their practices. Although considerable researches have been done regarding the efficiency of these programs, most of them have focused on individual teacher's change. However, a "teacher's mind is socially formed" (Edwards, 2001). This perspective indicates that teacher change is necessarily viewed in terms of social mediational process between individual and the social context. This study examines the interactions between teachers and researchers in order to explore the mediational processes and the aspects of collective understanding, which has emerged from the collaborative workshop. The data were collected from small group activities in a workshop and then analyzed using interactional sociolinguistic approach. Futhermore, activity system was employed to describe the social mediational process. The findings show that participating teachers constructed knowledge through conflict regarding collective understanding. This process of collective understanding was mediated by object, rules, and roles within each activity system. Findings from the study suggest that the sociocultural perspectives to teacher education are essential in understanding how teachers learn to teach and that teachers' professional discourse can play a significant role in teachers' professional development.

• Journal of the Korean School Mathematics Society
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• v.20 no.4
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• pp.495-519
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• 2017

The purpose of this study is to analyze the concept of the real number e and to investigate the understanding of pre-service teachers about the real number e. 28 pre-service teachers were asked to take a test based on the various ideas of the real number e and 8 pre-service teachers were interviewed. The results of this study are as follows. First, a large number of pre-service teachers couldn't recognize relation between the formal definition and the representations of the real number e. Secondly, pre-service teachers judged appropriately for the irrationality and the construction impossibility of the real number e, but they couldn't provide reasonable evidence. Lastly, pre-service teachers understood the continuous compounding context and exponential function context of the real number e, but they had a difficulty in understanding the geometric context and natural logarithm context of the real number e.

• The Mathematical Education
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• v.59 no.2
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• pp.101-112
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• 2020

The purpose of this study is to analyze the structures of teacher's discourse according to the pattern of interaction between teachers and students in the understanding mathematical word problem. The structures of teacher's discourse could be conceptualized as a process in which the teacher starts, develops and organizes the discourse based on prior research. For this purpose, the fourth class(example, a problem of the same type as the example, formative assessment, and final assessment) was extracted from one semester of experienced teachers who have been practicing teaching methods to facilitate student participation for many years. A methodology used to develop a theory based on data collected through classroom observations. Because the purpose of the study is to identify the structures of teacher's discourse to help the problem understanding, observe the teacher's discourse and collect data based on student engagement. Results show that the structure of teacher's discourse, which consults on important aspects of interaction between teachers-students and creates mathematical meanings, helped students understand the mathematics word problem by promoting their engagement in class. Based on the structures of teacher's discourse to understand problems based on the interaction patterns between teachers and students, it can be said that teachers provided specific methodologies on how to communicate with students in order to understand problems in the future.

• Journal of the Korean Chemical Society
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• v.64 no.5
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• pp.267-276
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• 2020

This study analyzed the level of chemistry teachers' cognition related to two types of acid-base models taught in secondary schools. For the purpose, a questionnaire was developed to identify teachers' cognitions based on previous studies that analyzed the 'Ignorance' of each model. The questionnaire consisted of two items, one related to acid and base reactions and one related to acid and base dissociation, which suggested inconsistencies between the two models. The subjects were 15 chemistry teachers, and as a result, teachers' cognitions were analyzed at four levels. The four levels are: if they don't know the two models, if they only understand one model, if they understand the two models, and perceived the 'Ignorance' of one model, and if they understand the two models and perceived the 'Ignorance' of the two models. The largest proportion of teachers understood the two models and perceived the 'Ignorance' of one model. However, the proportion of understanding the two models and perceiving the 'Ignorance' of the two models was very small. Through this, we argued that efforts to increase the level of chemistry teachers' cognition of the model and 'Ignorance' were necessary.