• Journal of the Korean Chemical Society
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• v.44 no.6
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• pp.600-610
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• 2000

The purpose of this study was to design the new teaching strategy based on the particulate model facilitating the reflective thinking (RE-PM) in the learning of the particulate nature of matter, and to investigate the effect of the new teaching strategy in compare with the traditional teaching strategy (TS-PM) after treating with new teaching strategy on preliminary teachers of elementary school. The problems of traditional teaching strategy are as follows: 1) Most of students didn't think the particulate model connected with practical material. 2) Most of students have a tendency of the rote memory on learning of the traditional particulate model. 3) The ratio of changing the view of continuous matter into the view of particulate nature of matter was very low, after learning the particulate model using of the traditional teaching strategy. The new teaching strategy facilitating the reflective thinking was more effective on the understanding of particulate nature of matter and the driving of motivation than the traditional teaching strategy in the learning of the particulate nature of matter.

• Journal of The Korean Association For Science Education
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• v.30 no.6
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• pp.836-849
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• 2010

The purpose of this study is to analyze changes of competency observed in teaching of pre-service science teachers through the teaching evaluation and reflective journal writings on science class during the period of student-teaching at high school. To do this, we videotaped all the science classes of six pre-service teachers participating in this study, evaluated their class teachings, and collected moving video clips recorded in their classes, reflective journals, interviews, instructional materials, and teaching evaluation they have provided. From the "Standards for teaching evaluation of science instruction" developed by Korea Education Curriculum and Assessment, sixteen evaluation elements were selected and used for the analysis. According to our results, all preservice teachers show improvement of teaching performance in most of the class evaluation elements as the number of science classes increases. They presented the lowest improvement in the 'to design meaningful learning program,' which was one of the sixteen elements. However, there are substantial individual differences in the pre-service teachers' teaching competence on each evaluation element. Although they thought that 'understanding of scientific concepts' is the most important part of a science class in the beginning of student-teaching training, they showed changes in recognition that 'interaction and respect' and 'managing student behaviors' are also important in the end. They have recognized that writing a reflective journal, based on the video clips recorded in class and teaching evaluation, helps improve their teaching competency. In addition, improvement in teaching competency has influence upon career-orientation towards the school teacher in the future.

• Journal of the Korean Society of Earth Science Education
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• v.15 no.1
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• pp.103-116
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• 2022

The purpose of this study is to investigate the perception on video material making and the effect on science teaching ability after conducting non-face-to-face teaching material making activity for elementary pre-service teachers. This activity consisted two processes. One is that elementary pre-service teachers conduct inquiry, understand related science concepts, analyze science textbooks and then make video material. The other is that they watch video materials produced by colleagues. This study was conducted on 89 elementary pre-service teachers for 8 weeks. After this activity was completed, the perception on video material making and the effect on science teaching ability of elementary pre-service teachers were investigated, and the results were analyzed. In the process of making and watching non-face-to-face teaching materials, elementary pre-service teachers showed positive results in teaching-learning, video production, and emotion and attitude toward video material making. In addition, it was found that they improved their science teaching ability through this activity and were very satisfied with this activity. However, they also mentioned several disappointments such as exclusion of learners' right to self-determination, lack of various communication channels, and errors in content of materials. This suggests that if these problems are solved, non-face-to-face classes can also be a good form of class.

• Journal of the Korean Society of Earth Science Education
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• v.4 no.3
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• pp.297-304
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• 2011

The objective of the research which it sees to investigate and teachers elementary school preparation should have had what kind of line concept from astronomical field, to interpret. The research questions of this study were as follows. It tried to observe the result which investigates the line concept of teachers preparation in about conceptual gain and loss degree of the astronomical field which it comes to reveal from the research which it sees. The students where are not the scientific department of pedagogy and the scientific department of pedagogy were visible a relatively high gain and loss degree from the earth shape and phase change of month during one night. Also the part which it thinks rhinologically was many. When it presents the type, with afterwords it is same. First, The endurance rotates in about location change of month during various day, it revolves with the direction where also the month is the same type which does not know a fact, The students do not recognize well in about the shape of month changing everyday the type. The students does not understand the location which the month when it follows at time is accurate well the type was many. Second, when it tries to compare a scientific department of pedagogy 3 grade and a rhinologic department of pedagogy 3 grade, the gain and loss degree of most scientific department of pedagogy 3 grade is appearing highly.

• Journal of the Korea Society of Computer and Information
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• v.19 no.12
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• pp.369-384
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• 2014

Since the start of gifted education in 2002, educational support system has now been established, and sufficient growth in quantitative aspects has been achieved in Korea. On the other hand, they report that there are insufficient points in terms of education quality. In other words, most of the gifted education simply expands knowledge by prior-learning. In order to improve the quality of gifted education, they should enhance critical-thinking and creativity able to apply interdisciplinary principles or phenomena for solving problems. In this study, we designed and developed a convergent teaching-learning materials based on the concept of integrated education, which explore the process that basic logic operations such as AND, OR, XOR do the role of computer cells. A survey result showed that student satisfaction(usefulness, understanding, interest) of the materials is significantly higher than that of other traditional learning topics, and the design intent was met.

• The Journal of the Korea Contents Association
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• v.11 no.3
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• pp.460-466
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• 2011

Kameun temple was constructed in A.D. 682 after 46 year after Chumsungdae was constructed. This paper discusses the scientific implication of Taegeuk stone rods of Kameun temple site through the geometric analysis of their engraved figures. So we can estimate that the west Taegeuk of Kameun temple site has 2 circles comparing the path of the moon with that of the sun leading to the asymmetry in its emblem(Taegeuk) and the east Taegeuk of Kameun temple site has 1 circle representing the path of the sun. The Taegeuks along with around 30 equilateral triangles representing the north latitude $35.8^{\circ}$ give the explicit information of period of the orbit of the moon and the sun. These mathematical methods can explain some relics structure of antiquity with a few historical expounds.

• Magazine of the Korean Society of Hazard Mitigation
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• v.3 no.1 s.8
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• pp.41-48
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• 2003

오염토양을 관리하는데 있어 현재 가장 중요하게 인식되는 부분은 오염물질이 정화되었다는 판정을 '어떤 기준으로 내리는 것이 합리적인가?'하는 것이다. 오염된 토양을 '어느 정도의 수준으로 복구를 하여야 하는가?'에 대한 의문이 학계와 산업계를 중심으로 꾸준히 제기되어 왔으며 미국의 경우, 환경청(Environmental Protection Agency) 등을 중심으로 그러한 물음에 대한 해답을 찾기 위한 본격적인 연구 및 조사활동이 활발히 진행되고 있다. 지금까지는 오염물질의 토양잔류농도와 획일화된 규제기준을 비교하여 오염여부를 판단한 후 복구여부 및 수준이 결정되어 왔는데 이러한 방법에 문제점이 있으며 현실적이지 못하다는 과학적 증거들이 발견, 축적되면서 이에 대한 대안이 모색되기 시작하였고 그 중의 하나가 '위해성에 근거한 복원전략(risk-based remediation strategy, RBRS)' 이라고 할 수 있다. RBRS는 오염토양의 정화기준을 결정하는데 있어 기존의 화학적 방법(즉, 토양잔류농도)뿐만 아니라 생물학적, 독성학적 방법도 같이 사용함으로써 오염물질의 실질적인 이용성에 따른 생독성을 평가하는 방법이다. RBRS의 가장 큰 장점은 오염물질의 종류뿐만 아니라 오염 지역의 특수성(예: 토지이용용도, 토양 및 지하수 특성, 수용체 집단의 특성 등)을 고려하여 오염물질의 위해성(risk) 여부를 판단하며 그 결과에 의거하여 오염지역의 정화 실시 여부 및 수준을 결정한다는 것이다. 따라서 RBRS에 의한 정화 및 복구사업은 과학적, 합리적, 경제적인 바탕 위에서 시행된다고 볼 수 있다. 이러한 장점들을 이유로 우리나라에서도 향후 오염지역의 정화에 RBRS와 같은 개념이 이용될 것으로 예상되며 학계를 중심으로 이에 대한 인식과 이해의 폭을 넓혀 나가야 할 것이다.

• Journal of the Korean Society of Earth Science Education
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• v.6 no.2
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• pp.145-151
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• 2013

The aim of this research is clarify the relationship between concept understanding degree about the environment and environmental sensitivity and heighten understanding of environmental education target to pre-service elementary teacher. The subjects of this study are science education intensive course 65 students of B educational university. Concept understanding degree about the environment was separately investigated by 'the definition of environmental education', 'Write The positive concept of the natural environment education and briefly describe.''The negative concept of the natural environment education and briefly describe'. Next clarify the relationship between concept understanding degree about the environment and environmental sensitivity target to pre-service elementary teacher. Based on these results, propose an alternative to cultivate pre-service elementary teacher's knowledge about environmental education. Degree of understanding of the concept environmental education research results are as follows. First, Cognition degree about definition of environmental education of pre-service elementary teacher is correctly recognized generally. Second, They do not think deeply about natural environment when it comes to the positive concept of the natural environment of pre-service elementary teacher. Third, They have only a little interest in natural environment when it comes to the negative concept of the natural environment of pre-service elementary teacher. Correlation research results of degree of understanding of the concept of environmental and environmental sensitivity are as follows. High understanding degree of environmental education is high environmental sensitivity. Heighten environmental sensitivity of pre-service elementary teacher will be sustainable environmental education so education is necessary for environmental Sensitivity training.

• Journal of Science and Technology Studies
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• v.8 no.1
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• pp.55-95
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• 2008

This research was performed with the aim of analyzing the 'expectation dynamics' of embryonic stem cell research which was revealed throughout the establishment process of Stem Cell Research Center from 2000 to 2002. Expectation dynamics is a chained process: expectation construction - raising fund - performing research. Normally, researchers are considerably circumspect and politically neutral in assessing the result of research. However, some researchers are very involved in building the expectation dynamics by developing an overestimated impact of the result, which can be understood as a kind of strategy for solving the financial problem and defending the criticism in terms of bioethics. Nowadays Biotechnology R&D costs a big budget and requires large site human resources, so building the expectation dynamics is a decisive element for a successful R&D performance, which makes the strategy-development in the political context much more important. By analyzing the actors-network of embryonic stem cell research in term of 'expectation dynamics', we can clarify the identify of embryonic stem cell researchers and draw a conclusion which is very helpful for decision makers and the public to make a decision related with embryonic stem cells.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.4
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• pp.1133-1142
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• 2016

The purpose of this study was to verify the effects of science classes using abductive strategies on the scientific concept understanding and meta-cognition. The subjects included two classes of sixth graders from K Elementary School in B Metropolitan City and they divided into two groups. Research group was composed of 21 students(10 boys, 11 girls) and comparative group was composed of 21 students(11 boys, 10 girls). In order to achieve aims of this study, proper contents to apply abductive strategies were selected from the first semester science curriculum for sixth graders. Also five-steps study papers were designed to elicit abductive reasoning. While the research group received 20 times of reframed science lessons using abductive strategies, the comparative group received common science lessons according to the teachers' manual. The results of this study are as follows. First, science classes using abductive strategies were effective for the scientific concept understanding. Also there were statistically significant differences between the research group and the comparative group in overall science sub-domain. In the process of hypothesis formulating, students tried to find out scientific causes thoroughly to present the optimal explanation and they concentrated on the analysis of each scientific concept. It is thought that this process contributed to better understanding in scientific concepts. Second, science classes using abductive strategies were effective for improving meta-cognition. There were statistically significant differences between the two groups and especially in monitoring that is one of sub-factors of meta-cognition. It indicates that hypothesis formulating process gave positive effect on meta-cognition by stimulating critical thinking and manifesting elaboration.