• 한국초등과학교육학회지:초등과학교육
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• 제30권4호
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• pp.524-534
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• 2011

This study is to ascertain pre-service teachers' conceptions for the causes of season change, to verify their conceptional mistakes, and to analyze how their conceptions are changed while presenting Disproof-Experiment Model where they cannot explain it with their current conceptions. 32 junior students of Education universities, pre-service elementary teachers, located at the middle of Korea participated in this research including two interviews and one experiment activity. As a result of analyzing of the data, the pre-service teachers held diverse conceptions for the causes of season change such as to mistake the phenomena, the distance between the earth and the sun, the tilting of the rotation axis and the revolving around the sun while changing the tilting direction of the rotation axis as the cause. After applying Disproof-Experiment Model designed by the researchers in order to change the current conception above, the conception changes of the pre-service teachers were investigated. Diverse Disproof-Experiment Models were used differently depending on the pre-service teachers' conceptions. As a result of the application of Disproof-Experiment Model, 26 out of 28 pre-service teachers were changed to scientific conceptions. It was determined that in order to modify pre-service teachers' conceptions, designing and presenting the Disproof-Experiment Model appropriate to their conceptions are effective after analyzing their conceptions. In case of conceptions that pre-service teachers feel difficult, it was established that unraveling experiment models prescribed after investigating the preconceptions and identifying the misconceptions are important.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제22권1호
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• pp.1-17
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• 2019

This study aims to examine changes in teaching and learning conceptions and sense of efficacy as well as relationships between them. Data were collected from 121 Korean preservice teachers before and after a 4-week teaching practicum. The results indicated that constructivist conceptions of teaching and learning increased over the practicum period and teacher efficacy shifted as well. In addition, correlations among the constructs were strengthened over the practicum period. Interestingly, constructivist conceptions related to differentiated education were not significant, while traditional conceptions related to teacher-guided lessons were significant after the practicum. These results imply that Korean preservice teachers still place value on the traditional perspective, even though constructivism dominates the current educational policies of Korea.

• 한국과학교육학회지
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• 제27권2호
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• pp.144-152
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• 2007

In this study, high school science teachers' and students' various conceptions related to osmosis phenomena were compared with and analyzed in relation to the content of science textbooks used in high school science classrooms and college science courses. The questionnaires developed by the researchers were administered to science teachers and students. Differences can be found between the explanations of science textbooks on osmotic pressure and semi-permeable membranes. Many science teachers and students thought of osmotic pressure as 'membrane pressure occurred by the movement of a solvent'. Moreover, the types of teachers of semi-permeable membranes were similar regardless of their academic majors. Many of the teachers thought of a semi-permeable membrane as a membrane that 'passes small-size particles'; however, many students thought of this type of membrane as being 'selectively permeable'. Also, the salt-pickling cabbage phenomenon seemed to cause significant confusion to science teachers and students. These study results show that teachers and students possess various conceptions related to the osmosis phenomena. These different conceptions related to osmosis phenomena might cause confusion and diverse conceptions including misconceptions among teachers and students.

• 한국과학교육학회지
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• 제15권1호
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• pp.104-115
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• 1995

Teachers' conception about the nature of science is considered to be an important factor to improve the students' conceptions of that. It is assumed that teachers' conception of the nature of science may be influenced by their views of learning. The first purpose of this study was to investigate the exploratory relationships between teachers' conceptions about the nature of science and their views of learning. The second one was to compare the their conceptions and views of learning before and after science education lectures during 1 semester. We administered the questionnaires for the nature of science and for constructivist's learning, respectively, consisted of 5 dimensions (relativism-positivism; inductivism- deductivism; decontextualism-contextualism; content-process; instrumentalism-realism) and of 6 aspects (student; learning; instruction; teacher; curriculum; evaluations) were administered to 57 pre-service elementary teachers (female=44; male=13) before and after lectures. In pre-test it was revealed that respondents had not the consistent conceptions about the nature of science. The conception of relativism was more dominant than those of positivism, deductivism than inductivism, decontextualism than contextualism, process than content and instrumentalism than realism. They had more constructivist views in the respect of process of learning than in other respects, that is, students, instruction, teacher, curriculum and evaluation. But no significant correlations between the dimensions of the nature of science and the aspects of the views of learning suggest that constructivst views of learning was not deeply related with their conceptions of the nature of science. In post-test we had similar results with those of the pre-test, but the process-content dimensions of the nature of science was correlated with the constuctivist views of learning. Therefore we concluded that elementary pre-service teachers had the constructivist views of learning which was isolated with their conceptions of the nature of science although they had science educations course. We need to develop the course to make the conceptions of the nature of science relate view of learning.

• 한국초등과학교육학회지:초등과학교육
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• 제32권2호
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• pp.206-224
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• 2013

The purpose of this study is to investigate the elementary pre-service teachers' conceptions on 'the freezing point depression' focusing on the survey from a National University of Education. Eighteen pre-service teachers who had completed high school Chemistry II coursework were selected to participate in the study. Participants answered a four question survey to measure their scientific knowledge and conceptions of this phenomenon. Each answer was qualitatively analyzed to determine whether they have 'scientific conceptions' or 'quasi-scientific conceptions' or 'misconceptions'. The results from the study are as follows: First, it was showed that none of the eighteen participants had 'scientific conceptions', six had 'quasi-scientific conceptions' and eight had 'misconceptions' about the caused effect when $CaCl_2$ is scattered on the ice. Second, it was found that three participants had 'scientific conceptions', eight had 'quasi-scientific conceptions' and two had 'misconceptions' for the second survey question. Third, ten out of eighteen participants demonstrated 'scientific conceptions' about the phenomenon of salt water freezing. Fourth, only three of eighteen participants illustrated appropriate 'scientific conceptions' for the fourth survey question. Fifth, of all participants, none answered more than three questions correctly, and only three participants answered any combination of two questions correctly. Based on the findings of this study, five explanatory models were developed. And the models were proposed for pre-service teachers to enhance their understanding of the freezing point depression phenomenon.

• 한국지구과학회지
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• 제23권2호
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• pp.140-146
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• 2002

We have studied 73 pre-service science teachers' conceptions about the nature of science (NOS) using 120 true-false test items based on AAAS Benchmarks statements. We have found that participants have inadequate understanding of the NOS, especially in understanding of five categories of conceptions; change and continuity in science, bias in scientific investigations, hypothesis in scientific investigations, things common in science, and science ethics. The result also indicates that there is a difference between primary pre-service teachers and secondary pre-service teachers. From the analysis of consistency, we also found that this inadequate understanding comes from confusion rather than misconception. All the results support that there is a need of intense pre-service teacher education concerning thenature of science.

• 한국과학교육학회지
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• 제21권5호
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• pp.773-794
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• 2001

Many studies on the professional development of science teachers demonstrated that induction teachers' conceptions of teaching science are important factors in developing their professionalism. The present study was conducted to describe in detail the progress of two science induction teachers, June and Mike, towards conceptual change teaching, and to investigate secondary induction science teachers' conceptions of teaching science by analysing their conceptual ecologies. The study was interpretive, using multiple data sources to achieve a triangulation of data. Both June and Mike held strongly positive learning in their views of knowledge and science. Holding positivist views of knowledge and of science is likely to be a major obstacle for anyone coming to understand constructivism and its implications in teaching for conceptual change. This argument resonates in several key ways with the teachers' cases, even though I recognize differences between scenario and teachers, and between teachers themselves.

• 한국과학교육학회지
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• 제23권4호
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• pp.341-359
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• 2003

The purpose of this research was to determine whether the present Korean teacher education programs for secondary science teachers are effective in improving the teacher conceptions of constructivism and STS. It is because the current Korean National Science Curriculum is consistent with both ideas as reforms. The teacher education programs sampled in the research included pre-service programs and two types of in-service programs. These two were the Qualifying In-service Program and the Iowa Korean Science Teachers Workshop. The Iowa Program was considered as an experimental program emphasized the constructivist perspective. Specially designed questionnaires for identifying teacher conceptions before and after the programs were administered. The conceptions about constructivism and STS improved as a result of the instruction in both of the pre-service and in-service teacher education programs. The pre-service program was more effective than the in-service programs in improving the teacher conceptions of both constructivism and STS. The Qualifying Inservice program was less effective than Iowa Korean Science Teachers Workshop. It was necessary for inservice programs for Korean secondary science teachers to be more emphasized on constructivism and STS. Iowa Korean Science Teachers Workshop provided a possible example to design a new special in-service program focused on constructivist perspectives as a way of aligning the Korean National Science Curriculum more quickly with recommended teaching practices in Korean schools.

• 한국학교수학회논문집
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• 제20권4호
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• pp.465-494
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• 2017

본 연구에서는 권위적 및 대화적 담화 사례의 교사 담화 평가에서 드러난 예비 수학 교사들의 인식을 질적 내용 분석으로 탐색하였다. 예비교사들은 교사의 일방적 설명이나 학생 대답을 적극적으로 수용하지 않는 폐쇄적 발화에 비판적이었으며, 학생의 이유를 탐색하는 질문과 오답에 대한 개방적 태도를 지지했다는 측면에서 표면적으로 대화적 담화를 지향하고 있었다. 그러나 교사가 대부분의 인지활동을 대행하는 테스트 질문에 무비판적이었고, 학생들에게 제기된 답에 대한 수학적 판단 기회를 부여하여 대화적 상호작용을 촉진하는 교사 발문에 대해 심리적 저항을 보였다는 점에서, 예비교사들의 심층적인 권위적 담화 지향성도 확인할 수 있었다. 본 연구에서 보고한 교사교육 입문 초기 예비교사들의 담화인식은, 교실 담화에 대한 교사 전문성 교육 과정 설계에 유용한 기초를 제공할 수 있을 것이다.

• 한국과학교육학회지
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• 제28권3호
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• pp.187-196
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• 2008

In this study, a survey was conducted of students in grades 7 through 12, student teachers enrolled in their senior year at teachers' colleges, and science teachers. Subjects were surveyed on their conceptions of phenomenon related with dissolution, saturation, and extraction. The models and analogies used by student teachers and science teachers to explain dissolution were sought. The highest percentage of students thought of dissolution as a phenomenon in which particles broke into the spaces between other particles. The models or analogies used by the highest percentage of science teachers were similar. They generally conceived of dissolution phenomenon through what we call the 'space conception'. A conception of dissolution phenomenon as 'hydration through attraction of solvent and solute' was held by more student teachers than science teachers; there were some differences, however, according to their academic background. The percentage of teachers professing this view decreased when they attempted to explain the process of extraction of matter in a solution after other matter had dissolved or after the solution was cooled, indicating that the 'hydration' conception was not firmly established in the student teachers' cognition. Therefore, it can be inferred that the conceptions of dissolution as 'hydration' were transformed into the conceptions of dissolution as 'space' after teaching dissolution phenomenon as practicing teachers. This finding should be considered in teacher-training courses.