• Journal of The Korean Association of Information Education
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• v.12 no.1
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• pp.89-97
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• 2008

The purpose of this study was to design a system of web-based discovery learning and testify its effectiveness, in order to complement the difficulties of discovery learning considered to be hard to be applied to the school education because of shortage of time and materials, though discovery learning is one of inquiry learning emphasized in the 7th national curriculum of elementary science. As for the process of testifying, it compared the differences between comparative group with normal discovery learning model and experimental group with web-based system of discovery learning model, targeting the subject of extending spring among the 4th grade science. As a result, the experimental group achieved higher academic performance compared to the comparative group applied to the normal discovery learning model.

• Journal of The Korean Association of Information Education
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• v.22 no.1
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• pp.159-167
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• 2018

In this study, we have developed an online learning community site using Humhub social network software and promote social constructive learning through the questions and answers in subject specific learning groups. By accumulating learning contents which consist of questions and answers about specific topics, learners can acquire knowledge by searching relevant topics and questions and can create and reconstruct knowledge as well as consuming knowledge by participating in self-regulated learning community. We have developed a mathematical editor feature which enables users to enter mathematical expression such as equations and greek characters. Online learning community sites can be used for inquiry based information education.

• Journal of the Korean Society of Earth Science Education
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• v.8 no.1
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• pp.98-113
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• 2015

The purpose of this study was to explore how science docents developed their expertise in the context of situated learning where two experienced docents played roles of mentors. Two experienced docents as mentors and six participating docents as mentees interacted in the community to develop exhibition interpretation strategies to be more professional in interacting with visitors through the workshops developed by the researcher. To figure out how docents developed their expertise in exhibit interpretation, the researcher collected the data from docents through observation, artifacts, and interviews as well as surveys. The result of this study included that participating docents formed new perception about scientific inquiry as well as scientific literacy and they developed professional skills of planning, implementing, and reflecting of exhibition interpretation in the context of situated learning, where docents formed alliance one another. It is recognized that participating docents' passions to be professional in exhibition interpretation and two experienced docents' wills as mentors made dynamic interaction in pursuing the same aim of docents' expertise in exhibition interpretation.

• Journal of Korean Elementary Science Education
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• v.23 no.1
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• pp.8-16
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• 2004

The purpose of this study is to provide implications for developing science textbooks and curriculum. The textbooks of elementary and secondary school Science were analyzed for their animal-related learning contents. Among learning materials, 165 kinds of animals were presented in Science of elementary school textbooks (37 kinds in Inquiry life, 162 kinds in Science), 167 kinds in Science of middle school, 486 kinds of high school (172 kinds in Science of high school, 180 kinds in Biology I, 366 kinds in Biology II). There are most kinds of animals in Biology II textbooks than in other textbooks. It was appeared that animal species were diverse in order of Class Insecta, Mammalia, Aves in the elementary school Science textbooks, Mammalia, Insecta, Aves in the middle school, Mammalia, Aves, Pisces in the high school.

• The Journal of Information Systems
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• v.31 no.4
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• pp.01-23
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• 2022

Purpose This study aims to propose a deep learning-based fake review detection model by combining authors' linguistic features and semantic information of reviews. Design/methodology/approach This study used 358,071 review data of Yelp to develop fake review detection model. We employed linguistic inquiry and word count (LIWC) to extract 24 linguistic features of authors. Then we used deep learning architectures such as multilayer perceptron(MLP), long short-term memory(LSTM) and transformer to learn linguistic features and semantic features for fake review detection. Findings The results of our study show that detection models using both linguistic and semantic features outperformed other models using single type of features. In addition, this study confirmed that differences in linguistic features between fake reviewer and authentic reviewer are significant. That is, we found that linguistic features complement semantic information of reviews and further enhance predictive power of fake detection model.

• Journal of The Korean Association For Science Education
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• v.33 no.2
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• pp.425-443
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• 2013

We developed problem-solving type inquiry learning programs reflecting scientists' research process and analyzed the activities of science-gifted high school students, and the understanding and the effects of the programs after implementation in class. For this study, twelve science-gifted students in the 10th grade participated in the program, which consisted of three different modules - making a cycloidal pendulum, surface growth, and synchronization using metronomes. Diet Cola Test (DCT) was used to find out the effect on the improvement of the ability to design experiments by comparing pre/post scores, with a survey and an interview being conducted after the class. Each module consisted of a series of processes such as questioning the phenomenon scientifically, designing experiments to find solutions, and doing activities to solve the problems. These enable students to experience problem-solving type research process through the program class. According to this analysis, most students were likely to understand the characteristics of problem-solving type inquiry learning programs reflecting the scientists' research process. According to the students, there are some differences between this program class and existing school class. The differences are: 'explaining phenomenon scientifically,' 'designing experiments for themselves,' and 'repeating the experiments several times.' During the class students have to think continuously, design several experiments, and carry them out to solve the problems they found at first. Then finally, they were able to solve the problems. While repeating this kind of activities they have been able to experience the scientists' research process. Also, they showed a positive attitude toward the scientists' research by understanding problem-solving type research process. These problem-solving type inquiry learning programs seem to have positive effects on students in designing experiments and offering the opportunity for critical argumentation on the causes of the phenomena. The results of comparing pre/post scores for DCT revealed that almost every student has improved his/her ability to design experiments. Students who were accustomed to following teacher's instructions have had difficulty in designing the experiments for themselves at the beginning of the class, but gradually, they become used to doing it through the class and finally were able to do it systematically.

• Journal of The Korean Association For Science Education
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• v.18 no.2
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• pp.245-256
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• 1998

In this study, we discussed about the implications of the idealization, which take an important role in physics, to the physics education. First, understanding of the idealization help the physics learning itself. This is because that various types of idealizations are included in the physics terms and concepts, derivation processes of physics laws and formulas, and explanation of natural phenomena and problem solving activities. Second, understanding of the idealization can help the application of the physics world to the real world. That is, by understanding the extent and the limit of idealization used in physics world, physics students can understand the discrepancies between the real world and the physics world. And also, by modifying or eliminating the idealization, students can extend the extent of understanding about how predictions based on the idealization used in the physics world will change. To do this, we suggested the application of computer simulation program in physics laboratories. Third, idealization take an important role in the inquiry learning for students' originality. The activities of identifying or controlling the variables, as one of the principal factors of scientific inquiry, need the appropriate establishment of the ideal conditions. And to analyze the limiting case or practice the thought experiments for understanding the impossible situation in the real world, ideal conditions also are needed. This study discussed above three aspects with various concrete examples and, with Park et al.'s study (Park et al., 1998), present the theoretical basis for the study of students' and teachers' understanding the idealization.

• Journal of the Korean earth science society
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• v.42 no.6
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• pp.700-716
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• 2021

This study is based on the importance of observation or exploration in contemporary scientific inquiry and the need to expand the learning materials of science inquiry. It aims to analyze students' characteristics of exploration in abduction by developing and applying an educational program using art materials. For this study, a program named "Scientist going to the museum" utilizing artistic materials such as Oriental and Western paintings, mythology, orchestral suite, and traditional houses, was developed and five middle school students participated. Students who found and explored interesting phenomena in the work were divided into three main groups depending on the characteristics of the exploration activity. Some students observed and described elements that could be connected to scientific concepts, while others mainly explored everyday elements that were relatively unrelated to such concepts. Moreover, another type of students explored the works based on their subjective evaluations. This study shows that learning materials that cannot be visually explored are not suitable for abductive activities that students' prior knowledge has a significant impact on their exploration, and that educational materials for earth science inquiry could be expanded. This study also provides an example of learning materials and methods, and that abduction may be utilized for learning astronomy.

• Journal of the Korean Chemical Society
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• v.66 no.2
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• pp.150-162
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• 2022

In this study, we investigated pre-service science teachers' NOS-PCK by analyzing their NOS lesson planning and demonstration. Four pre-service science teachers participated in the study. They planned and demonstrated NOS lessons in the context of 'Science Inquiry Experiment' developed under the 2015 Revised National Curriculum. Their lessons were observed. All of the teaching-learning materials were collected, and semi-structured interviews were also conducted. The analyses of the result revealed that pre-service teachers mainly referred to the curriculum and textbooks when selecting the NOS learning objectives. However, they felt difficulty because the curriculum and textbooks did not clearly present the NOS to be dealt. Although all of them took explicit approaches, there were not many open and divergent reflective approaches. In addition, they expected that high school students would consider scientific knowledge absolute and would have negative perceptions of NOS lessons. They rarely assessed students' NOS learning, and were reluctant to assess. Finally, most of them had a negative perception that learning NOS is not necessary for all students. On the bases of the results, educational implications for improving the expertise of pre-service science teachers in NOS lessons were discussed.

• 한국정보교육학회:학술대회논문집
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• 2010.08a
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• pp.151-160
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• 2010

Learning progression is an advantageous way to describe the development of learner understanding about a topic. In the present study, learning progression is introduced to characterize novice teachers' professional knowledge and competence and to help designing teacher professional development programs in the developmental approach. The development and validation phases of learning progression are proposed in the paper. In addition a case study is presented to demonstrate the process of developing a learning progression for teaching-through-inquiry using ICT. The learning progression in novice teacher professional development can be used to assess the level of teacher understanding in specific topic and to effectively support the development of teachers' professional knowledge and competence via professional development programs in the longitudinal view.