• 한국초등과학교육학회지:초등과학교육
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• 제39권1호
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• pp.100-116
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• 2020

The purpose of this study was to investigate the interaction of science PCK between two elementary school teachers by the teacher collaboration within the school. We chose the case that two teachers collaborated spontaneously in the 5th-grade science classes. Even though they had similar teaching experiences, one of them had the science PCK while the other did not. As a result of this study, two teachers began to collaborate to avoid comparisons of science classes between them. They shared the same teaching plan but practiced science teaching individually. During they taught science, they usually collaborated on the instructional sequences, student's activities, and the content of assessments. They had an in-depth collaboration when the teacher who lacked the science PCK asked help to teach problem-centered learning by science inquiry. During the collaboration, their science PCK components, especially the knowledge of instructional strategies for teaching science, shared and it affected the teacher's science practices who lacked the science PCK. However, they did not usually share the knowledge of teaching for their everyday science classes because two teachers had the perception of noninterference about their science classes. This case has the limitation that it is hard to generalize the results but teacher collaboration shows the possibility to develop the elementary school teachers' science professionalism by having peers in the school who can help them in science classes.

• 한국초등과학교육학회지:초등과학교육
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• 제32권1호
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• pp.10-21
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• 2013

The purpose of this study was to research applying possibility of the R.G.B. technique for combined thinking learning in the elementary science classes. For this, R.G.B. technique which was designed to mark students' output with red, green and blue colors depending one's judgement was developed and applied in elementary science classes. The results were follows. Firstly, the propriety of questionnaires constitution which was developed to achieve study objects in science classes was given credit by experts. Secondly, the evaluating results of student's outputs which had been done during science classes were credible on focused achieving the objects of science classes. Thirdly, in a point of view achieving creative thinking skill as well as knowledge, R.G.B. technique was effective. Fourthly, the combined thinking learning joined R.G.B. technique has possibility of applying to general science classes. Fifthly, the students who were participating in combined thinking learning science classes based on R.G.B. technique said with great satisfaction. Consequently, combined thinking learning based on R.G.B. technique should be paid attention to the value of possibility to achieve study effects both creative thinking skill and knowledge.

• Advances in Computational Design
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• 제2권4호
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• pp.293-311
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• 2017

There are several claimed benefits for the impact of design patterns (DPs) on software quality. However, the association between design patterns and fault-proneness has been a controversial issue. In this work, we evaluate the fault-proneness of design patterns at four levels: the design level, category level, pattern level, and role level. We used five subject systems in our empirical study. As a result, we found that, at the design level, the classes that participate in the design patterns are less fault-prone than the non-participant classes. At the category level, we found that the classes that participate in the behavioral and structural categories are less fault-prone than the non-participant classes. In addition, we found that the classes that participate in the structural design patterns are less fault-prone than the classes that participate in the other categories. At the pattern level, we found that only five patterns show significant associations with fault-proneness: builder, factory method, adapter, composite, and decorator. All of these patterns except for builder show that the classes that participate in each one of them are less fault-prone than the non-participant classes in that pattern. The classes that participate in the builder design pattern were more fault-prone than the non-participant classes and the classes that participate in several patterns: the adapter, the composite, and the decorator design patterns. At the role level, the most significant differences were between the classes that participate in some roles and the non-participant classes. Only three pairs of design pattern roles show significant differences. These roles are concrete-product vs. concrete-creator, adapter vs. adaptee, and adapter vs. client. The results recommend the use of design patterns because they are less fault-prone in general except for the builder design pattern, which should be applied with care and addressed with more test cases.

• 한국지구과학회지
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• 제43권4호
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• pp.557-566
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• 2022

The purpose of this study was to examine the status of the field application of the Science II career electives with the application of the 2015 revised curriculum up to the 3rd year of high school. This study focused on examining high school science teachers' perceptions of the student-participatory class and process-centered assessment in Science II subjects, which are career-intensive high school science electives. A total of 192 science teachers responded to the survey questionnaire, and 12 teachers participated in interviews. In the in-depth interviews conducted to supplement the survey results, questions were asked about changes in the overall class, the status of student-participatory classes, and changes in the assessment of Science II subjects due to the emphasis on process-centered assessment. The main research results included teachers' perceptions of changes in teaching and assessment methods with the application of the revised curriculum, the degree to which the eight skills used in Science II classes develop the key competencies of science, and the teaching and assessment methods commonly used in Science II classes. Science teachers generally agreed with the purpose and necessity of introducing student-participatory classes and process-centered assessment, which are the core purpose of the 2015 revised curriculum. However, they had difficulties in practice due to the excessive content of Science II subjects. Problems were also encountered with securing objectivity and fairness during assessments and the operation of online science classes due to COVID-19.

• 대한지구과학교육학회지
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• 제3권1호
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• pp.36-46
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• 2010

The purpose of this study is to find out the influence of MBL Exhibition Class on the Elementary School students' academic achievement, scientific research abilities and affective characters. For the purpose, three classes were sampled in the 5th grade of an elementary school. Among the three classes, two were designated as the comparative classes consisted of 68 students and the other was the experimental class, 33 students. The comparative classes were given lessens according to the content presented in the textbook of 7th Education Curriculum and the experimental class was given re-built lessons with using MBL machines. Before and after giving lessons, students of both classes took a test for science academic achievement. And also the scientific research abilities and affective characters were examined. The conclusions from this study is as follows. First, according to the result of science academic achievement test after giving lessons, the mean of the experimental class was higher than that of the comparative classes meaningfully. Second, scientific research abilities of the experimental class was shown higher than that of the comparative classes meaningfully. Specially, basic research abilities were improved very meaningfully and only hypothesis-building ability was improved among integrated research abilities. Third, it doesn't seem that MBL exhibition class is effective on affective characters(interest, attitudes).

• 한국과학교육학회지
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• 제31권4호
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• pp.609-620
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• 2011

이 연구는 과학영재 수업을 관찰한 예비 과학교사들이 과학영재와 과학영재 교육을 어떻게 인식하고 있는지, 과학영재 수업에서 개선해야 할 점은 무엇인지 조사하였다. 연구 결과 예비 과학교사들은 첫째, 과학영재들의 영재성에 대해 부정적이었다. 둘째, 다양한 형태의 수업이 이루어지고 있지 못하다고 인식하였다. 특히 이론 강의가 가장 많았는데, 이는 과학영재들의 잠재적 영재성 계발에 부정적이라고 인식하였다. 셋째, 창의성 및 사고력 향상을 위한 프로그램의 부재와 과학영재 수업 교재에 대해서 부정적이었지만, 자기 주도적 학습에는 긍정적이었다. 넷째, 교육시설과 수업인원에 대해 부정적이었다. 다섯째, 강의자가 전공 교수일 때 학생의 잠재적 영재성이 가장 잘 개발될 것으로 인식하였다. 과학영재 수업에서 개선되어야 할 점으로 선행학습 위주의 판별 수정, 창의적 사고력 함양 교수학습의 강화, 특정 학년의 교육과정과 관계없는 창의적 내용으로 구성, 영재교육을 위한 학습 자료의 확보, 영재교육 전문 강사의 필요성을 언급하였다. 이상으로부터 예비 과학교사들은 대학에서 이루어지고 있는 과학영재 수업에 대해 부정적으로 인식하고 있으며, 개선할 점으로 선행학습이 아닌 창의적 교육과정과 전문 강사의 필요성 등을 언급하였음을 알 수 있었다.

• 한국초등과학교육학회지:초등과학교육
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• 제38권3호
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• pp.317-330
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• 2019

The purpose of this study is to investigate the influences of science leading schools on primary and middle school students' positive experiences about science (PES) through in-depth interviews with teachers in charge of science leading schools. Science leading schools at the primary and middle school level such as Creative Convergent Science Labs and Student Participatory Science Classes were investigated and 11 teachers were participated in focus group interviews. Teacher in-depth interviews were conducted to explore the factors that led to the effectiveness of science leading schools in improving the student's PES in light of operational characteristics of science leading schools, characteristic factors of science leading schools on students PES, and improvement plans and requirements of science leading schools, as well as implications for general high schools. Science leading schools including Creative Convergent Science Labs and Student Participatory Science Classes applied for the leading school funding to secure supplies, equipments, and lab improvement for authentic science classes. In addition, reconstructed the curriculum more broadly than before, and emphasized and expanded student participatory classes and process-centered assessment at the teacher learning community level. Through student-participatory classes, the science leading schools stimulate students' interest in science, provide students with PES) through various instructions including projects, engage students in interesting science experiences in Creative Convergent Science Labs, and enhance inquiry skills and PES as well as science content knowledge. Based on the results, ways to spread the characteristics of science leading schools to general schools are suggested including expanding budget support, securing the space of science labs and improving spatial composition, providing diverse teaching and learning materials, diversifying assessment subjects and methods, and the necessity of teachers' continuous professional development, etc.

• 한국초등과학교육학회지:초등과학교육
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• 제33권2호
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• pp.217-230
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• 2014

This study explores the features of sociocultural context of experiment classes taught by a science subject teacher. Two experiment classes on electric circuit for fifth graders were observed and video recorded. The data was also collected through student interviews and teacher interviews. Using the cultural historical activity theory, we extracted the six sociocultural factors and analyzed their interactions. This study could identify that four features of the sociocultural context of the cases. First, the rules of science classes were not decided by the teacher, but formed and modified through the negotiation between the teacher and students or between the students. Second, elementary students played a game, i.e. 'Countdown game', during their electricity experiments, which had both positive and negative influences on science learning. Third, the science teacher feels a limit on life guidance because of the position as a subject teacher in an elementary school. Lastly, although the science teacher had enough time to prepare science classes, there was no guarantee of the improvement of teaching quality. Based on the results of this study, educational implications are discussed in terms of teaching science experiments and of the science subject teacher system.

• 한국초등과학교육학회지:초등과학교육
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• 제30권4호
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• pp.490-503
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• 2011

The purpose of this study was to investigate the effects of science instruction using integrative educational model on academic achievement and scientific attitude in gifted classes on elementary science. Integrative educational model (hereafter referred as IEM) was developed by synthesizing the findings from brain research, the new physics, general systems theory, and educational psychology. 77 6th graders of B Metropolitan City's Elementary Gifted Education Center were took part in this study. The experimental group, consisting of 39 students, was applied to the instruction using IEM, while the comparison group, 38 students, was applied to instructor- led instruction. The results of this study were as follows: First, the science instruction using IEM had a positive effect on improving achievement in gifted classes on elementary science. Second, the science instruction using IEM had an influence on inquisitiveness and openness of the lower domains of learners' scientific attitude. Third, the science instruction using IEM had a positive response to learners' interest, comprehensibility about lesson contents, and ability to concentrate on classes.

• 한국초등과학교육학회지:초등과학교육
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• 제40권1호
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• pp.100-112
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• 2021

Based on the importance of visual representation for scientific understanding, this study applied visual thinking in elementary science classes. This study analyzed elementary students' visual thinking and investigated the instructional influences. Students' perceptions on the class applying visual thinking were also investigated. The subject were 38 fourth grade students, 18 in experimental group and 20 in control group. For the unit of 'Shadow and mirror', on-line and off-line blended classes were applied in both group because of COVID-19. The experimental group student were asked to construct their own visual thinking, while the control group students used traditional workbook. The results were as follows. First, students' visual thinking can be classified into three different types, which are 'activity recall type', 'result summary type', and 'core concept representation type' based on what they represent rather than how they represent. Second, applying visual thinking in science class showed significant effects on science academic achievement, science related attitude, and creative academic efficacy. Third, students' perceptions on applying visual thinking in science classes were very positive. Students perceived visual thinking activities were interesting and helpful for understanding science. Educational implications of applying visual thinking in elementary science classes were discussed.