• Journal of the Korean Chemical Society
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• v.58 no.1
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• pp.126-129
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• 2014

Concerning the difficulty of learning science and reduced interest in science, the authors of this study searched for potential threshold concepts which are portals or gateways in the field of science (particularly chemistry). The nature of these concepts and how to overcome their troublesomeness were further questioned. For this study, 239 high school students completed chemistry II provided information about what difficult concepts and potential threshold concepts in high school chemistry are and how they affect learning chemistry. In particular, the mastery experience of the threshold concepts was explored in detail. Two, "mole and atomic structure" were selected as threshold concepts in chemistry. Not only as important but also as threshold, this study emphasized the importance of the two concepts in terms of features characterizing them as threshold concepts. In particular, the features objectify subjective experiences of students and provide information describing the scientific meaning and distinctive nature of threshold concepts in science. Along with the data from teachers, this study shows the integrative feature as key criteria for students to make meaningful understanding of the two threshold concepts.

• Journal of The Korean Association For Science Education
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• v.40 no.3
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• pp.291-305
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• 2020

The purpose of this study is to examine whether and how the features of performance assessments implemented during integrated science classes are related to teachers' PCK. We observed and video recorded four high school teachers' performance assessment practices, interviewed them, and surveyed their PCK. An analysis of the data shows that the teachers' performance assessment practices differed in terms of assessment of process, diagnosis of student learning progress, feedback, degree of classroom interactions, and use of assessment criteria. In particular, the opportunities for students to participate in assessment actively and use of assessment for learning varied across teachers. Also, relational patterns among science teaching orientations, PCK and performance assessment practices were found. When a teacher aimed at teaching for both academic learning and scientific literacy, sophisticated PCK was shown and assessment practices were complex accordingly. When scientific literacy was emphasized PCK highlighted experiential learning and assessments were not clearly distinguished from learning activities. In contrast, when academic achievement was emphasized traditional teaching strategies and assessments were highlighted. Based on these findings a number of topics for professional development are suggested including strategies for students' active engagement in assessment, use and development of specific assessment criteria, strategies for assessing performance qualities, and intuitive assessment competency development. Further research topics are also suggested.

• Journal of Korean Home Economics Education Association
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• v.32 no.1
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• pp.107-125
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• 2020

The purpose of this study was to analyze the dietary life units of Korean and American high school home economics textbook according to Habermas's three systems of action and to find out how the three systems of action are reflected in the learning objectives and activity tasks of the textbook. To achieve this purpose, this study analyzed the learning objectives and activity tasks of the dietary life units in the textbooks of 'technology & home economics' and 'home economics science' in Korea, and 'succeeding in life and career' in America using a content analysis technique based on Habermas's three systems of action. In analyzing the content, each learning objective or activity was matched with one of the three systems of action by examining the context. In some cases, two or more systems of actions were integrated in one activity. This is a case where a series of learning tasks that involve different action system were grouped into one. The numbers of learning objectives and activities of the units of 'technology & home economics', 'home economics science' textbooks of Korean high schools and 'succeeding in life and career' dietary life of American high schools were 3, 26, and 248, respectively. In Korean textbooks, the percentage of communicative action was highest among the three systems, that is, 66.7% for 'technology & home economics' textbooks and 50% for 'home economics science' textbooks. In comparison technical action was the highest in American textbooks at 66.5%. Activities related to technical action included cooking, conducting research on health and food, or conducting experiments. The activities related to communicative action included role play related to health and table manners, or writing reports after conducting surveys or interviewing professionals. The activities related to emancipative action were to social participation activities such as service project in relation to health and food, or to find problems that occur in dietary life and think about be best solution through practical reasoning.

• 대한공업교육학회지
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• v.43 no.2
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• pp.24-42
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• 2018

Chemical batteries are indispensable materials, and technologies related to chemical batteries are important as they are linked to various social problems; further, they directly affect our lives. Thus, the topic of chemical batteries is suitable for industrial education. However, there has not been sufficient educational use of chemical batteries in Korea, and existing research materials do not correspond with the present curriculum. The STS teaching-learning materials about chemical batteries in this study were developed by the curriculum development model (preparation, development, improvement) for chemical engineering students in specialized vocational high schools. In the preparation stage, the study topic and the learning objective were selected by analyzing previous research about the STS and chemical battery. At the development stage, STS class plan and teaching-learning materials were developed. In the improvement stage, The STS curriculum plan and the teaching-learning materials were verified by a group of specialists and a survey regarding student satisfaction was conducted. As a result of conducting the class with the teaching-learning materials developed in this study, a positive effect in terms of students' perceptions, understanding and interest.

• Journal of the Korean earth science society
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• v.33 no.2
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• pp.170-182
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• 2012

The purpose of this study was to develop learning materials based on the Kepler's abductive reasoning and to identify high school students' rule-inferring strategies on the law of planetary motion. The learning materials including the concepts of solar magnetic field, conservation of figure skater's angular momentum and Kepler's polyhedral theory were developed and the questions about Kepler's 2nd and 3rd law of planetary motion were also created. The participants were 79science high school students and 83general high school students. The patterns and properties of their abductive inference were analyzed. The findings revealed that the students showed 'incomplete analogy abduction', 'analogy abduction' and 'reconstruction' to generate the hypotheses concerning the Mars' motion related to the solar magnetic field. There were more general high school students who showed the incomplete analogy abduction than science high school students. On the other hand, there were more science high school students who showed the analogy abduction and reconstruction strategy than general high school students. Also, they showed 'incomplete analogy abduction', 'analogy abduction' and 'model construction and manipulation' to generate the hypotheses concerning Kepler's second law. A number of general high school students showed the incomplete analogy. It is suggested that because the analogy of figure skater cause the students' alternative framework to use, more detailed demonstration is necessary in class. In addition, students combined Kepler's polyhedral theory with their prior knowledge to infer Kepler's third law.

• The Mathematical Education
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• v.58 no.3
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• pp.383-401
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• 2019

This study started with the idea that it is necessary to focus on common concepts and ideas among the subjects when conducting integrated education in high school. This is a preliminary study for developing materials that can be taught in mathematics in the context of already learning scientific concepts in high school. For this purpose, Mendel 's law of genetics was studied among the contents of biological subjects which are known to have relatively little connection with mathematics. The more common links between the two subjects are, the better, in order to integrate math and other subjects and develop materials for teaching. Therefore, in this study, we investigated not only the probability domain but also the concept of statistical domain. We have been wondering if there is a more abundant idea to connect between 'Mendel's law' and 'probability and statistics'. Through these anxieties, we could find that concepts such as 'likely equality' and 'permutation and combination' including 'a large number of laws' can be a link between two subjects. Based on this, we were able to develop class materials that correspond to classes. This study is expected to help with research related to development of integrated education support materials, focusing on mathematics.

• Journal of The Korean Association For Science Education
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• v.36 no.2
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• pp.347-360
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• 2016

This study focused on the use of student assessment activities to investigate the impact on reflective thinking in Argument-based Inquiry. The participants of the study were 166 10th grade students (six classes). Over one semester, students participated in five ABI programs that we developed. The experimental group (84 students) was taught Argument-Based Inquiry with students' self and peer assessment activities. The comparative group (82 students) was taught without the activities. We analyzed students' reflective writing to investigate how the student assessment activities influenced the students' reflective thinking. We also used the interviews and surveys to examine the validity of student assessment activities. According to analysis of the reflective writing, the experimental group had a significantly higher mean score than the comparative group in the 3rd and 5th writing. The ratio of students who showed a metacognitive level of reflection with regard to analysis of inquiry process, understanding of learning, and change of thinking increased in both groups, but the experimental group's ratio was higher than the comparative group's. The result of analysis of the reflective practice showed that the ratio of the experimental group's students who reached the metacognitive level of reflection in their writing increased, while the comparative group's decreased. Therefore, we conclude that student assessment activities can create a learning environment that facilitates student participation, increases the students' engagement in the learning process, and can be used as a tool to scaffold learning.

• 대한공업교육학회지
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• v.32 no.1
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• pp.73-92
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• 2007

The purpose of this study was to develop ICT(Information and Communication Technology) teaching-learning materials for motorcycle safety education. Physical subjects which are relevant with motorcycle dynamics were introduced to increase the safety awareness through integrated learning such as the combination of technology and science. The results of this study were as follows : (1) Utilizing the physics basic theories which are relevant to motorcycle dynamics, the lesson plan of motorcycle ICT teaching-learning materials, which were included to plan and instruction action plan, was developed. (2) Flash animation or movie was developed to apply physics knowledge to technology in driving motorcycle. This is able to improve the attitude of driving motorcycle of students. (3) Through the contents of appendix of motorcycle safety driving section in this web-site developed here, junior and senior high school students would be able to strengthen their cognitive domain of motorcycle by themselves. (4) Using the web-site of this study, both teachers and students would be able to freely interact through an online bulletin board.

• Hwankyungkyoyuk
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• v.23 no.4
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• pp.70-81
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• 2010

The present study aimed to understand high school students' environmental literacy for water and their attitudes toward environment. This study was conducted during the spring of the 2010 academic year with the participation of 123 students from a public international high school located in Seoul. The Environmental Science Literacy for Water test and the Revised New Ecological Paradigm scale were administered, and the data were analyzed by descriptive statistics and content analysis. The high school students in this study put strong emphasis on encouraging others to conserve water resources. This belief, however, was not aligned with self-recognition of their own roles in water supply shortages and other problematic water-use behavior. They also had difficulties in understanding the invisible part of matter transformations in water systems. Nevertheless, they showed favorable attitudes toward environmental conservation. In conclusion, the researchers suggest recognizing our own water problems and narrowing the gap between environmental and scientific knowledge of water and actual attitudes about the environment through curricular incorporation of interdisciplinary environmental science literacy into school science.

• Journal of the Korean Chemical Society
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• v.56 no.1
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• pp.115-127
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• 2012

This is a survey research which investigated perceptions of 85 elementary and secondary school science teachers on inter-disciplinary teaching in general. It is expected that the results of this survey will help to find out the necessity, the appropriate time, the proper approach and the obstacles of inter-disciplinary education. Results indicated that 49.5% of the teachers were aware of inter-disciplinary teaching and 61.2% of the teachers agreed with the necessity of implementing inter-disciplinary strategy. However, considering difficulties in objective assessment and burdens of college entrance exam preparation, they responded that inter-disciplinary teaching could be more appropriate and feasible to be implemented for lower graders at elementary schools than secondary school students. Of the answers to the integrated approaches, 57.6% of teachers chose the theme-based approach, and 16.5% chose the problem-based approach. When they chose the theme-based approach, they stated the reason of educational readiness. On the other hand, when they chose the problem-based approach, they stated the reason of educational obligation which assumes that a problem solving needs inter-disciplinary approach. The teachers also selected 'lack of knowledge on other subjects' and 'lack of time to prepare teaching materials' as major predicaments in implementing inter-disciplinary approach. This suggests that there needs a clear and specific teaching strategy along with a guidance to teaching materials for inter-disciplinary teaching.