• Journal of The Korean Association For Science Education
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• v.31 no.8
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• pp.1214-1228
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• 2011

As a case study on beginning teachers' teaching professionalism in science-gifted education, we analyzed their teaching professionalism based on pedagogical content knowledge. To do this, we selected 3 elementary and 3 secondary beginning teachers from science-gifted education institutes in the metropolitan area. After their science instructions for science-gifted students were observed, in-depth interviews were conducted. Analyses were conducted with taped videos, researcher's field notes, and transcripts for in-depth interviews. This study revealed that most of the teachers had relatively desirable belief about science-gifted education. However, they tended to have a little deficient practical knowledge about science-gifted students, the curriculum for science-gifted education, science contents, the instructional strategies for science-gifted education, and the assessment in science-gifted education. These results imply that many teachers are likely to have a little deficiency in teaching professionalism for science-gifted students in various aspects, and need to find the ways of improving their teaching professionalism.

• Journal of Practical Engineering Education
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• v.14 no.1
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• pp.91-97
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• 2022

Recently, as per a representative education method to develop core capabilities (such as critical thinking, communication, collaboration, and creativity) problem based learning (PBL) has been widely adopted in universities. Two important features of PBL are 'collaboration between team members' and 'participation based self-directed learning'. These two features should be satisfied in online education, although it is difficult due to the limitation on space and time in the COVID-19 pandemic. This paper presents a new design of PBL class in Metaverse, based on improving the online PBL class operated in the previous semesters in the H university. In the proposed PBL class, students are able to display materials (e.g., image, pdf, video files) in 3D virtual space, that are related to problem solving. The 3D virtual space is called gallery in this paper. The concept of gallery allows for active participation of students. In addition, the gallery can be used as a tool for collaborative meeting or for final presentation. If possible, the new design of PBL class will be applied and its effectiveness will be analyzed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.5
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• pp.779-785
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• 2022

Study analyzes whether the 3D CAD class using the flipped learning-based PBL is effective in acquiring professional knowledge and nurturing talent. A Flipped Learning-based PBL class was implemented for 3rd grade students of Robot and Automation Engineering Major, Dong-Eui University, and a survey was conducted on satisfaction and effectiveness. The students seemed to be generally satisfied with the class, and the flipped learning-based PBL appeared to be effective in improving the competency required by companies. In particular, it is hoped that it will contribute to the use of video education in practical subjects in the future by proving that practical classes can be operated effectively even in non-face-to-face learning. Moreover, this study is an important indicator for future research and will be used as a quantitative indicator for class improvement.

• The Journal of the Korea Contents Association
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• v.7 no.9
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• pp.240-247
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• 2007

The purpose of this study was to analyze the learning effects of video demonstration in a multitude of video screens in a science class. To examine this, an experiment from the first year science textbook was chosen, which looked at the relationship between electrical voltage and electrical current. Three experimental groups were used for the purpose of this study: 1/ a control group which used experimental still photos during a traditional class. 2/ experimental group A which used videos in a single screen, and 3/ experimental group B which used a multitude of video screens to demonstrate their effects. Post test learning effects was then carried out on each group related to the units. The results showed an improvement in grade for all groups. Experimental group B showed the most significant result, followed by the experimental group A. The control group showed the least significant grade improvement. In conclusion, the study revealed that the utilization of video demonstration in a science class is very useful and can be adapted in different forms in class. To enhance the effects of the learning method in conveying efficient meaning, versatile methods should be used to stimulate and heighten students' interests by mixing still photographs and video demonstration with various screen composition with the help of information technology.

• Journal of Science Education
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• v.35 no.2
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• pp.283-294
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• 2011

The purpose of this study were to develop a tutorial for secondary students to understand of basic concepts of special relativity, which is appropriate for the cognition level of secondary student. We developed the concept evaluation tool and the tutorial material. Result from pretest and post-test are presented to verify the effect of the tutorial for helping student understanding of the concept such as time, event, reference frame, relativity of simultaneity. Secondary student had intense cognitive conflict about the complex concepts such as simultaneity, length contraction and time expansion. This tutorial could be proposed methodology to overcome cognitive difficulty for understanding these concepts.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.943-946
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• 2004

최근에 중등학교 학내 전산망에서 동영상 위주의 멀티미디어 학습 자료를 이용한 학습이 많아짐에 따라, 실제 수업 시간이나 자율 학습 시간에 동영상 학습 자료를 활용했을 때 트래픽 특성이 구체적으로 어떻게 나타나는 지를 정량적으로 규명하는 것이 요구된다. 이에 본 논문에서는 고등학교 1개교와 중학교 1개교에 대해 동영상 학습 자료를 이용한 학습 시 학내 전산망에서 나타나는 트래픽 특성을 트래픽 분석 도구를 이용하여 분석하였다. 특히, 학교 내에 자체 웹 서버의 유무, 컴퓨터 접속 대수 등을 주요 변인으로 하여 동영상 실행 시 나타나는 현상들에 대한 측정 결과들을 제시하였다. 측정 결과로부터 다음과 같은 특성들을 얻어낼 수 있었다. 첫째, 학교 내에 자체 웹 서버의 유무가 전송 트래픽 량에 상당한 영향을 주었다. 둘째, 동시 컴퓨터 접속 대수의 증가가 끊김 현상과 같은 트래픽 특성에 영향을 주었다. 이러한 측정 및 분석 결과를 볼 때, 적게는 수십 명 많게는 수백 명의 학생이 동시에 인터넷을 통해 학습을 한다면 학내 전산망의 구성 형태나 동시 접속자 수에 따라 원활한 학습을 가져오지 못하고 많은 문제를 가져 올 것으로 예상되었다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.289-295
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• 2020

The purpose of this study is to investigate the difference of learners' preference for animation movies in EFL English classes. In this study, four classes of 124 college students that participated in the English screen class employed an animation, Alice in Wonderland. This study examined the different activities of three categories of pre-study, while-study, and post-study. First, on the analysis of studying activities of 15 items, the results showed meaningful differences depending on the students' gender. That is, female students were more interested in mostly all of the activities, while male students' interests were skewed to some post-study activities. Second, comparing the differences of studying interest among the three groups, the low group is more concerned with the pre-study activities, while the higher group is generally interested in the while studying and post-study activities. Third, on the analysis of correlation between the three level groups and activities, the results indicated meaningful differences in some activities. In summary, based on the results of this research, it is necessary to consider the learners' variables and focus on the learners in the English screen class. Further, teachers should apply these results to the management of their screen class and to the development of teaching materials.

• Journal of Korean Home Economics Education Association
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• v.20 no.4
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• pp.19-42
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• 2008

The purpose of this study was to develop practical problem-based home economics teaching.learning process plans about a unit 'the youth and consumer life' of middle school eighth-grade Technology and Home Economics by applying blended learning(BL) strategy. According to ADDIE instructional design model, this study was conducted in the following procedure: analysis, design/development, implementation, and evaluation. In the stage of design and development, the selected unit was converted into a practical problem-based unit, and practical problem-based teaching. learning process plans were designed in detail by using BL strategy. An online study room for practical problem-based home economics instruction grounded in BL strategy was prepared by using Edunet(http://community.edunet4u.net/${\sim}$consumer2). Eight-session lesson plans were mapped out, and study aids for students and materials for teachers were prepared. In the implementation stage, the first-session teaching plans that dealt with a minor question 'what preparations should be made to become a wise consumer' were utilized when instruction was provided to 115 eighth graders who were in three different province, and the other one was in a middle school in the city of Daejeon. The experimental teaching was implemented for two weeks in the following procedure: preliminary program, pre-online learning, main instruction and post- online learning. The preliminary program was carried out in a session in the classroom, and pre-online learning was provided before the main instruction was given in a session in the classroom. After the main instruction was completed, post-online learning was offered. In the evaluation stage, a survey was conducted on all the learners and teachers to find out their opinions and suggestions.

• Journal of the Korean Chemical Society
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• v.64 no.2
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• pp.84-98
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• 2020

In this study, we analyzed the influences of lecture design using CoRe upon the professor's teaching professionalism in the aspects of pedagogical content knowledge (PCK). The participants are three professors from the college of science-engineering located in Chungcheong-do. After collecting their syllabi, we observed their lecture and conducted the orientation. Afterward, we collected the CoRes which they prepared before the lecture. Then we observed their lecture and conducted semi-structured interviews. This process was carried out twice. We analyzed their syllabi, CoRes, videotaped lectures, field notes, the teaching materials, and interview transcripts. The results revealed that professors not only clarified the learning objectives and the characteristics of students but also reflected them in the lecture. In addition, they established the teaching strategies according to the characteristics of contents in the unit. As they recognized the necessity of understanding students' achievement, they selected the assessment method and applied it in the lecture. In some cases, however, they lacked presenting learning objectives specifically and explained students' misconceptions without inducing new concepts. They also presented a shortage of considering students' prior knowledge. They lacked providing students with an opportunity to participate in lectures, and their assessment method was not effective. Based on the results, we discussed implications to improve teaching professionalism using CoRe.

• Journal of The Korean Association For Science Education
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• v.36 no.2
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• pp.269-277
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• 2016

Recently, there has been a dramatic increase in the number of cases that have formed and operated teachers' learning communities through cross-curricular consulting at the school level. The purpose of this study is to explore cross-curricular instructional consulting as an activity of teachers' learning communities at the school level, and investigate the effect of cross-curricular instructional consulting on middle school science teaching. We analyzed features and limitations of cross-curricular instructional consulting revealed in three case studies in middle school, including open classes and instructional consulting sessions, and conducted additional instructional consulting on the same videotaped science classes with science experts from outside. According to the results, science inquiry experiments are often replaced with text reading and interpreting, students' misconceptions and exact scientific representations are ignored, and the goal setting as well as class coverage has been questionable and disputable in science classes resulted from cross-curricular instructional consulting. Discussed in the conclusion are the necessity of cross-curricular instructional consulting in middle school, and ways to overcome limitations of the method of cross-curricular instructional consulting, including alternatives to a praise-only policy in cross-curricular instructional consulting, ways to use cross-curricular instructional consulting without compromising the subject's essence, and ways to improve the undue authority of consultants.