• 한국초등과학교육학회지:초등과학교육
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• 제28권3호
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• pp.245-262
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• 2009

This research was to examine the understandings of elementary school teachers on the phenomena related to light and image, and to survey their perception change related to learning contents of optics. The subjects were selected from the elementary teachers who were enrolled in a graduate course, 'Science education seminar' at an education college located in Chungchungbuk-Do, South Korea. Among the five students who exposed their perceptions clearly in the class, the three of them were selected who agreed to the proposal of the case study. To achieve the purpose of this study, semi-structured interviews following the conception test with the 3 elementary teachers were conducted. During the analysis of the data, additional interviews by phone, e-mail, and internet messenger were conducted if necessary. According to the results, all of the elementary school teachers lacked the scientific conceptions of the phenomena related to light and image. Unfortunately, their learning experiences did not help them to understand the scientific concepts. During the interviews, the teachers recognized the importance of the viewpoints of seeing, image, cognition of light, point light source to understand the phenomena related to light and image.

• 한국과학교육학회지
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• 제31권4호
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• pp.513-527
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• 2011

학습자의 개념 형성 요인을 심층적으로 분석하는 개념 생태 관련 연구들이 많이 진행되어 오고 있다. 학습자의 인지 구조를 생태계로 비유한다면, 인지 구조 속에 존재하는 개념은 생태계의 종으로 비유할 수 있다. 따라서 생태계 내 종이 생태 지위를 가지듯이, 학습자의 개념 생태 내 개념도 생태 지위를 가질 수 있다. 이 연구는 개념의 다양성, 개념의 관련성과 빈도율 변화, 개념 간 경쟁관계로 구성된 생태 지위적 접근을 통하여, 광합성 학습 전 후에 5학년들이 인식하는 광합성 개념 간 관계를 분석하였다. 설문지는 광합성 장소, 광합성 생성물질, 광합성 필요물질, 광합성 환경요인 네 영역으로 구성되어 있으며, 각 영역별로 알고 있는 개념과 그 개념의 관련성 정도를 점수(1~30 점)로 기입하도록 제작되었다. 5개 도시 소재 11개 초등학교의 5학년 11학급 총 310명의 학생들을 대상으로 설문하여 분석하였다. 연구 결과는 다음과 같다. 첫째, 학생들은 광합성에 '빛'과 '물'을 공통적으로 많이 인식하면서 다양한 개념들을 지니고 있었다. 둘째, 학습 후에도 학생들은 '뿌리', '바람' 등과 같은 오개념이 여전히 나타나고 있었으며, 광합성 영역별로 오개념과 과학 개념이 공존하고 있었다. 셋째, 학습을 통하여 '빛'에 대한 학생들의 인식이 높아지고 있지만, 광합성 영역에 따른 적절한 개념을 인식하지 못하고 있기 때문에 교사들의 지속적이면서 효율적인 교수 전략이 필요하다. 넷째, 학생들이 인식하는 개념들은 개념 생태내에서 위상을 갖고 복잡하게 얽혀져 있는 것으로 보아 생태 지위를 갖고 있는 것으로 판단된다.

• 한국과학교육학회지
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• 제11권1호
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• pp.25-36
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• 1991

For the purpose of extending the fields of biological preconceptual studies, the conceptions of plant classification, which have not been researched on them in korea, were selected and a questionnaire were administered to a sample of a total of 965 students at elementary and secondary school levels of korea. Many elementary school students have the alternative conceptions that plants are not alive. The misconceptions in plant classification are partly caused by the uncertainty of biological terms. To serve the teachers, who have difficulty in teaching them, the preceeding results are summarised with Composition the misconception maps.

• 한국초등수학교육학회지
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• 제20권4호
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• pp.601-625
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• 2016

본 연구는 비례추론 과제에 대한 초등예비교사들의 반응을 분석함으로써 예비교사들의 비례추론 과제에 대한 이해 정도를 살펴보고, 비례추론 전략에 따른 비례추론 과제의 적합도와 비례추론 과제에 따른 전략의 특징을 살펴보고자 하였다. 이를 위해 총 8개로 구성된 검사도구를 개발하여 초등예비교사 72명에게 적용하였으며, 연구결과를 종합하여 예비교사교육에서의 비례추론 지도에 대한 시사점을 다음과 같이 도출하였다. 예비교사들이 실제적이고 다양한 비례추론 과제들을 다루는 경험, 양적 관계에 대한 의식적인 분석을 행하는 경험, 예비교사들이 미흡한 이해를 보이는 특정 과제 유형에 대한 보완, 다양한 비례추론 전략들을 분류하고 탐구하는 경험, 비례추론 전략에 적합한 과제 유형을 파악하고, 비례추론 과제에 보다 유용하고 사용가능한 비례추론 전략을 파악하도록 하는 학습경험이 필요하다고 보았다.

• 대한지구과학교육학회지
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• 제8권3호
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• pp.267-280
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• 2015

The purpose of this study is to identify the conceptions of middle school students and teachers about Visible-Light, Ultra-Violet(UV) and Infrared-Ray(IR). We administered questionnaire 3 teacher and 102 students(48 people of middle school 2nd students and 54 people of middle school 3rd students) who learned by 3 teachers in seoul. From the analysis, it was found that many students and teachers didn't understand the basic principle of UV and IR. Significant number of students belive that it is possible to see objects the absence of visible light. Most students belive that they can see objects in the presence of UV light alone. They think that "Light" is single concept. Teachers were generally more aware of the origin and explanation of UV. But teachers expressed some uncertainties. They tend to think negative effect for UV.

• 한국초등과학교육학회지:초등과학교육
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• 제34권1호
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• pp.15-31
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• 2015

The purpose of this study was to investigate elementary student teachers' conceptions about the mechanism of the greenhouse effect, the greenhouse gases, the global warming, and their learning experiences of the greenhouse effect and the global warming. Participants were 82 student teachers in their second year of studies (science education: n=28, not science education: n=27) and in their fourth year of studies (science education: n=27). The open-ended questionnaire was used to examine the teachers' spontaneous ideas depicted by their drawings and/or writings. The results of this study are as follows: First, the student teachers' scientific response rate about key concepts related to the mechanism of the greenhouse effect was low (6.1%~28.0%); Second, although there are various greenhouse gases, it was only carbon dioxide that the student teacher's response rate was more than 80%; Third, only 17.1% of the student teachers clearly distinguished the greenhouse effect and the global warming; Fourth, there was a tendency that the student teacher group in the fourth year of studies and science education showed higher scientific response rate about the concepts than the other two groups.

• 한국초등과학교육학회지:초등과학교육
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• 제24권2호
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• pp.130-137
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• 2005

Elementary preservice teachers' understanding about the insect molt and metamorphosis was examined. Data were collected through the paper-pencil test of 448 junior students at a National University of Education. The instrument used was developed by Son(2003) and modified for the test. The results are as follows: First, Only 3.1$\%$ of students had a scientific concept on the molt periods in the insect life cycle. Students had an alternative conception that molt occurs either only in the larval period (29.9$\%$) or only in the period from pupa to adult (22.3$\%$). The percentage of the students thinking that molt occurs in the period from larva to pupa was low. Second, 98$\%$ of students stated that molt has to do with the larval growth, but 39.1$\%$ of students had an alternative conception that molt occurs after the larval growth at each instar. 25.1$\%$ had a conception that molt is related with the larval growth, but did not show any further understanding. Third, most students understood the correct meaning of metamorphosis. 34..2$\%$ of students had an alternative conception that metamorphosis occurs only in the period changing from pupa to adult, and only a few thought that it occurs in the period from larva to pupa. 24.8$\%$ of students had a scientific concept on the periods in which metamorphosis occurs. Fourth, some students understood the hatching process as molt in the sense that the egg shell is taken off (21.0$\%$), and as metamorphosis in terms of the appearance change from egg to larva (25.0$\%$). Fifth, 35.5$\%$ of students selected bees as an insect of incomplete metamorphosis, and 35.3$\%$ responded 'I have no idea', showing that they had poor understanding about the insect life cycle.

• 한국초등과학교육학회지:초등과학교육
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• 제24권4호
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• pp.351-359
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• 2005

The aims of this research are to analyze elementary preservice teacher's conception and causes of their misconceptions on biological reproduction and inheritance. In future, it would be also to provide useful data for the effective teaching-teaming method in the elementary school as well as opportunities to correct their misconceptions, which help elementary preservice teachers have the appropriate scientific conceptions. Thirty kinds of test questions were designed in science curriculum for elementary students and biology textbook for university students in order to develop reproduction and inheritance's concepts. The questionnaire was given to 166 junior students of university of education in a local city. All statistical analysis was performed using SPSS version 10.0 program. The major results are as follows: Among 30 test questions, 2 questions in plants, 5 questions in animals and 2 questions in gene were appeared as misconceptions over $50\%$. The major reason to hold the misconceptions was influenced by 'learning up to now' category. The selection reasons of response were significantly different between scientific conceptions and misconceptions in 10 questions by analysis of variance. The gender also showed statistically significant differences between scientific conception and misconception in 3 questions by $\chi^2$ test. The selection reasons according to gender were significantly different between male and female students in 5 questions. For the reasons in forming misconceptions, they may cause by stereotype, conscious priority, differences of experiences, interest or attention, lack of professional Knowledge, and so on. Therefore, it was concluded that this research may help elementary preservice teachers to reconsider their conception for reproduction and inheritance and to be successful in science instructions fur elementary students.

• 한국초등과학교육학회지:초등과학교육
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• 제23권1호
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• pp.50-60
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• 2004

The purpose of this study was to define teachers' learning motivation strategies and students' responses by analyzing science classes and interviews. The subjects were first grade and sixth grade teachers and students of an elementary school. The analysis tools are based on Keller's ARCS theory. The differences of teachers' motivation strategies were analyzed by grades and teachers' and students' backgrounds. The interviewers were composed of three teachers and three students of first grade, and three teachers and three students of sixth grade. The data were collected by recording of the classes using tape recorders, video cameras, and notebooks written by researchers. The results are as follows. First, teachers had their own styles of teaching strategies in their classes. Especially teachers' teaching backgrounds affected on the teachers' instructional strategies. The teachers who had long teaching experiences of lower grade students used to show a lot of attention strategies. While the teachers with long teaching experiences of higher grade students used to show few learning motivation strategies. Especially, sixth grade teachers used to show fewer confidence strategies than first grade teachers. Second, all of the teachers used to show few satisfaction strategies commonly in all the classes observed. Third, the students' recognition of the motivation strategies were not different according to their conceptions or activities of the classes. Commonly first grade students focused on the attention strategies, while sixth grade students focused on negative motivation strategies. Fourth, the teachers who believed that students need detail guidance and control recognized the needs of satisfaction strategies by students' autonomous activities after observing video tapes of other teachers' classes.

• 대한지구과학교육학회지
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• 제1권1호
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• pp.111-118
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• 2008

This study is aimed at analyzing earth conception the nine pre service teachers who are majoring in earth science education and classifying a special feature from the ontological categories. Open ended questionnaires and semi structured interviews which meant to contribute to identifying ontological categories of concepts involving study area were designed. Pre service teachers' ontological category about earth conception most showed to dynamic and proto process. In the results show that many pre service teachers recognize simply the conception to a material, a condition and a conversion of the state changing. Most of the pre service teachers show their intermediate understanding level about the earth inner construction according to the analyzed results of the drawing tasks and interviews. The main alternative conceptions show them through a definition of the plate, a wording definition between lithosphere and asthenosphere, a feature of the plate boundary, a heat convection in the earth inner, the earth inner heat source, the earth inner structure, a physical feature of the mantle.