• Journal of The Korean Association For Science Education
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• v.40 no.3
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• pp.253-269
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• 2020

This study aims to develop items to diagnose pre-service physics teachers' understanding of the conceptual knowledge of modern physics, based on the achievement criteria presented in the 2015 revised national science curriculum, and to identify the validity and reliability of the newly developed items. Data were collected from 467 pre-service physics teachers in the Physical Education Department or Science Education Department (Physics Education Major) of 15 universities across the nation. In this study the content validity, substantive validity, the internal structure validity, generalization validity, and the external validity proposed by Messick (1995) were examined by various statistical tests. The results of the MNSQ analysis showed that there was no nonconformity in the 23 items. The internal structure validity was confirmed by the standardized residual variance analysis, which shows that the 22 items was unidimensional. The generalization validity was confirmed by differential item functioning (DIF) analysis about groups lectured or not modern physics/quantum mechanics. In addition, item analysis and test analysis based on classical test theory were performed. The mean item difficulty is 0.66, mean item discrimination is 0.47 and mean point biserial coefficient obtained was 0.41. These results for item parameters satisfied the criteria respectively. The reliability of the internal consistency of the KR-20 is 0.77 and the Ferguson's delta obtained was δ = 0.972. By Rasch model analysis, the item difficulty (item measures) was discussed.

• Journal of The Korean Association For Science Education
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• v.18 no.3
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• pp.273-282
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• 1998

The purpose of this study is to compare the effect of concept formation between conflicted case and non-conflicted case as a method of learning science concepts. This study consists of 8 classes in 5th and 6th grade of elementary school children's in Kyoung-Buk, which were divided into conflicted group and non-conflicted group. The research procedure is as follows : first, two groups were asked the introducing problems-one was asked the conflicting problem, the other was asked the non-conflicting problems. Futhermore, the incorrect-answered students of conflicting problems were classified into conflict group am the correct-answered students of non-conflicting problems were classified into non-conflict group. Secondly, the demonstration and picture presentation about the introducing problems were carried out. Thirdly, the researcher introduced scientific concepts to the students. Afterwards, posttests, made up of the same items, were presented to the students-three times-posttest, delayed posttest(one week), second delayed posttest(one month). Finally, the degree of concept formation between the two groups was compared and analyzed by these results.

• Journal of The Korean Association For Science Education
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• v.32 no.2
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• pp.320-330
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• 2012

Understanding the relation between basic science and applied science is important for students in understanding the importance of learning science, the relationship between scientific knowledge and human life, and for enhancing their science motivation. In this study, we evaluated the statistical validity of this hypothetical model and explored the effect of gender and students' preferred courses (e.g., humanities, science, and art) on four dependent variables. We also evaluated the differences of students' understanding across scientific domains and students' understanding concerning basic and applied scientific knowledge. Three hundred and twenty five 10th grade students participated in this survey research. Statistically, we employed bivariate correlation, partial correlation, path analysis, two-way ANOVA, and repeated measures ANOVA. Our findings illustrated that our hypothetical model was statistically valid. In addition, the significant interaction effects of gender and students' preferred courses on each dependent variable were shown. Students have different levels of understanding of the convergence of basic and applied science, the relation between scientific knowledge and human life, and the importance of learning science across scientific domains (e.g., physics, chemistry, earth science and biology).

• The Korean Publising Journal, Monthly
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• s.234
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• pp.6-6
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• 1998

과학기술서는 딱딱하고 재미없는 전문가의 책으로 알기 쉽지만, 사실 우리의 생활은 모두 과학기술의 발달과 맥이 닿아 있다. 길이.질량.시간.전기.온도 등 생활과학의 기초가 되는 개념을 통해 과학기술에 의한 생활문명의 원리를 이해할 수 있다.

• Journal of The Korean Association For Science Education
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• v.22 no.1
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• pp.141-157
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• 2002

The purpose of this study was to analyze teacher's teaching-learning strategies and young children's concepts related to mathematics and science in integrated mathematics and science education activities. To achieve this purpose, actual class episodes were analyzed. The episodes were derived from 7 sessions of interaction between teacher and 4 kindergartners in integrated mathematics and science education activities. As a result of the study, children's concepts related to mathematics and science in integrated mathematics and science education activities occurred three factors: the relationship between weight, shape and movement, the relationship between weight and size, and the concept of measurement. In teacher's teaching-learning strategies, three factors were revealed: teacher's questioning, use of teaching materials, and children grouping.

• Korean Journal of Child Studies
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• v.27 no.2
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• pp.39-53
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• 2006

This study investigated the effects of family related cooking programs on young children's basic science concepts and mathematics abilities. Subjects were 24 five-year-old children, 12 each for the experimental and the control group. Examinations of basic science concepts and mathematics abilities were applied to determine the homogeneity of the two groups. The 23 cooking activities, 12 for kindergarten and 11 for each child's home, were applied to the experimental group for six-week periods. The results of this study were that the family related cooking programs were effective in the formation of children's basic science concepts and children's mathematics abilities.

• Journal of the Korean earth science society
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• v.32 no.7
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• pp.798-808
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• 2011

The purpose of this study was to explore middle school students' perceptions about earth systems in order to implement the 2009 revised national science curriculum effectively. A total of 1219 students participated in the survey and asked to determine their basic understandings about earth systems, self-reported knowledge level, and perceived significance level of the 23 earth systems concepts (contents). In relation to students' basic understandings about earth system, approximately 67% students reported that they didn't know about the term of the earth system. Atmosphere and hydrosphere were highly perceived as major component of earth system. However, cryoshere was perceived to be least familiar by the subjects. The findings also showed that students' self-reported knowledge level and significance level about major ESU#4, #5, #6 related concepts (contents) were significantly different by gender. Most of male students were more knowledgeable and perceived more significant than female students. Regarding the difference of the perceived significance level by grade, 10 out of 23 concepts were significantly different. Some implications for implementing the revised curriculum and school fields were discussed.

• 한국과학교육학회:학술대회논문집
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• 2008.01a
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• pp.126.1-126.1
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• 2008

• Proceedings of the Korea Technology Innovation Society Conference
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• 1998.05a
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• pp.6-6
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• 1998

다가오는 21세기를 대비하여 많은 나라들이 정보와 지식을 확보함으로써 국제적 경쟁력을 갖추기 위해 노력하고 있다. 특히 지식의 공급원천인 기초과학에 대해서는 그 본질을 훼손하지 않으면서 기초과학을 국가경쟁력 강화에 어떻게 연계시키느냐에 초점을 맞추어 정책을 수립하고 있다. 21세기를 앞둔 지금 우리의 바람직한 기초과학정책의 방향은 우리의 현실을 바탕으로 한 실용적이면서, 기초과학이 지니는 특성을 충분히 감안한 것이어야 한다. 따라서 21세기 우리의 기초과학정책이 추구해야 할 목표를 다음과 같이 3가지로 설정하고자 한다. 첫째 지식의 증진, 둘째 과학기술인력의 양성, 셋째 경제성장과 삶의 질 향상에 기여이다. 이 세 가지 목표는 상호 독립적으로 존재할 수 없으며 상호 밀접하게 연계되어야 한다. 이 세 가지 목표를 달성하기 위한 추진전략은 다음과 같다. (ⅰ) 기초과학에 대한 지속적인 정부지원의 강화 : 기초과학에 대한 지원은 정부가 중추적인 역할을 담당해야 하며, 창의적 연구와 학제간 연구에 대한 지원을 강화하여야 한다. (ⅱ) 연구와 교육의 연계를 통한 과학기술인력의 양성에 기여 : 창의적이고 수준 높은 연구를 통해 훌륭한 과학기술인력이 양성되어야 한다. 지식기반경제 하에서 훌륭한 과학기술인력은 미래의 우리 나라의 성공을 좌우하는 요소가 될 것이다. (ⅲ) 국제적 연계의 강화 : 우리 나라의 SCI 점유율은 1%에 불과하다. 국제적 과학기술연계를 통하여 세계의 과학기술지식에 접근하고 협력의 이익을 얻을 수 있어야 한다. (ⅳ) 프로그램 위주의 지원방식과 분야별 지원방식의 병행 추진 : 기초과학에 사용될 수 있는 자원은 한정되어 있으므로 해당 분야의 특성과 경제 사회적 요구를 감안하여 분야별 우선 지원을 병행하여야 한다. 분야별 우선 지원을 위해서는 분야별 전망보고서가 작성되어야 한다. 그러나 분야별 우선 지원 분야의 도출 및 이의지원은 창의적 연구에 대한 보완적 개념으로 이루어져야 한다. 선진국의 경우에도 우선 지원분야에 대한 연구비 배분은 5-10%사이이다. (ⅴ) 성과관리를 통한 지원효과의 극대화 : 기초과학의 지원에 있어서 그 성과를 특정한다는 것은 쉬운 일이 아니지만 연구비 지원효과를 극대화하기 위해서는 프로그램 평가를 통해 성과관리를 하여야 한다. (ⅵ) 효율적인 혁신시스템의 구축 : 혁신시스템의 효율적인 운영이 매우 중요하다. 이를 위해서는 첫째, 연구부문과 산업부문을 연결시킬 수 있고, 새로운 분야를 담아낼 수 있는 유연한 분야분류체계를 정립하여야 하고, 둘째 연구결과의 효율적인 활용이 이루어져야 하며, 셋째 연구지원기관간 연계시스템의 구축을 구축하여야 한다.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.11 no.6
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• pp.73-80
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• 1993