• Journal of the Korean earth science society
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• v.43 no.2
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• pp.312-323
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• 2022

This study began with the hypothesis of whether "solar radiation" and "terrestrial radiation" can be replaced by "visible radiation" and "infrared radiation", respectively. To this end, we investigated the perceptions of high school students who completed the Earth Science I course through a questionnaire to reveal how they perceived each concept. We also analyzed the descriptions and illustrations of textbooks that may have affected their perceptions. All of the students who participated in the questionnaire recognized solar radiation as radiation emitted only in the visible light region. About 35% of the students recognized convection, conduction, and latent heat as energy transfer by radiation in the Earth's heat budget. By analyzing six types of Earth Science I textbooks in the 2015 revised curriculum, we observed that two types introduced the terms "shortwave radiation" and "longwave radiation" but had no explanation for them, while the other two described solar radiation as "radiation mainly in the visible light region" or "radiation in short wavelengths". Regarding solar and terrestrial radiation in the last two types, there was no explanation for the wavelength regions, or ambiguous terms such as "short wavelength" and "long wavelength" were used. In addition, the two textbooks contained some errors in the illustration of the energy budget. Considering that textbooks described solar and terrestrial radiation without defining the exact terms for shortwave and longwave radiation, learners are likely to recognize solar and terrestrial radiation as visible and infrared radiation, respectively. This finding implies that vague statements or errors in textbooks can cause or reproduce students' misconceptions. The discussion in this study is expected to be used as a helpful reference material for teaching and learning processes regarding the Earth's radiation equilibrium and heat budget, and thereby contribute to proposing reasonable description plans for future textbook writing.

• Journal of the Korean earth science society
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• v.27 no.1
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• pp.20-31
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• 2006

This study analysed student teachers' notable questions about the earth science contents in the elementary science textbooks. The contents of notable questions were defined as ‘notable question contents 1' and 'notable question contents 2'. Both the question contorts are contents about which the number of questions is above three times and from two times to three times as much as the mean number of questions per page of each unit respectively. The results are as follows. First, question contents 1 are found as 'clouds observation', 'geological strata formation' and so on. Question contents 2, 'rainfall measurement', 'moon's movement during one night' and so on are found. Second, the number of interrelationships of main terms in questions increased in each question of question contents 1, but 4 term-patterns are found more in question contents 2 than question contents 1. Third, high interrelationship patterns of terms in question contents 1 are 'coal and petroleum-generation', 'metamorphosis-heat and pressure', 'metamorphosis-heat and pressure-metamorphic rocks', 'planet-sun-comet-revolution' and in question contents 2. 'constellation plate-use', 'dryness and wetness hygrometer-principle', 'seismograph-principle-earthquake', 'earth rotation axis-tilting-occurrence', 'dryness and wetness hygrometer-principle-humidity' and so on. The sources of questions analysed in this study are estimated as the content construction system of textbooks, or students' general questions about the earth science contents. If this is the former, the problems in texts and illustrations in textbooks should be articulated and resolved. And if the latter, the elementary science curriculum has to be reconsidered in view of scientific literacy in earth science.

• Journal of Korean Elementary Science Education
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• v.41 no.4
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• pp.627-641
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• 2022

This study aims to help elementary school teachers increase their knowledge about the changes in the positions of the sun and moon during the day and the first time the moon observation begins in the Earth and Space section of the Earth and the Moon. The survey questions were grouped into four categories, namely, textbook explanation, inquiry activities, achievement of learning goals, and other opinions. The perception of each question differed according to advanced science majors and teaching careers and experiences of this unit. In addition, understanding the diverse views of the participants using descriptive questions was possible. The study recruited 67 teachers working at an elementary school in Gyeonggi-do. The conclusion is as follows. First, the teachers exhibited similar positive and negative perceptions about the description of the textbook on the changes in the positions of the sun and moon during the day. Second, the study found that majority of teachers used alternative methods when guiding students regarding the change in the positions. This trend was not correlated with the sun and the moon, and the study observed no difference in advanced majors and teaching careers and experience of this unit. Third, the majority of teachers responded that they could achieve their learning goals through this learning. However, many teachers complained of various difficulties in guiding students about the lesson, and the majority alternative methods. The results demonstrated the perception of teachers that students can achieve learning goals through alternative methods without direct observation.

• Communications of Mathematical Education
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• v.35 no.4
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• pp.445-473
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• 2021

The purpose of this study is to derive implications for the design of the next curriculum by analyzing the textbooks designed as a new subject in the 2015 revised curriculum. In the mathematics curriculum documents of , 'related learning elements' are presented instead of 'learning elements'. 'Related learning elements' are defined as mathematical concepts or principles that can be used in the context of artificial intelligence, but there are no specific restrictions on the amount and scope of dealing with 'related learning elements'. Accordingly, the aspects of 'related learning elements' reflected in the textbooks were analyzed focusing on the textbook format, the amount and scope of contents, and the ways of using technological tools. There were differences in the format of describing 'related learning elements' in the textbook by textbook and the amount and scope of handling mathematics concepts. Although similar technological tools were dealt with in each textbook so that 'related learning elements' could be used in the context of artificial intelligence, the focus was on computations and interpretation of results. In order to fully reflect the intention of the curriculum in textbooks, a systematic discussion on 'related learning elements' will be necessary. Additionally, in order for students to experience the use of mathematics in artificial intelligence, substantialized activities that can set and solve problems using technological tools should be included in textbooks.

• The Journal of Korean Philosophical History
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• no.28
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• pp.117-153
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• 2010

It seems that the education of environment in a discipline of morality has not been systematically given in the middle school. In the Seventh Course of education, the aim of moral education for the middle school has no content concerning environment. And there is no chapter of environment in all the textbooks for the first, second and third grade in the middle school. The content of environment is largely introduced in order to explain a series of key content in the chapters of discussing 'personality', 'courtesy of neighborhood', 'conflict of value', 'civil morality' and so on. Even we can say that its descriptions are aimless, instrumental and secondary for education. Recently, it is no exaggeration to say that the education of environment is not effectively carried out in a discipline of morality of the middle school. In the 2007 revised course of education, there are some content of environment in the aim of morality and its education, and a chapter of "environment and Morality" is newly established. From now on, a new textbook of morality is being made according to the currently revised course of education. It will be gradually useful for the first grade in 2010, for the second grade in 2011, and for the third grade in 2012. It is possible to say that it will add momentum to effectively carrying out the education of environment as part of a discipline of morality in the middle school. Taking it into a detailed consideration, however, the education of environment in this revised course of education cannot help including a serious problem, either. This is because, a chapter of environment is included only in the first grade of middle school, and, according to a prescription of writing criterion established by the Ministry of Science and Technology, there can be no overlapping content for each grade. It will more likely that the education of environment will be given only in the first grade, not in the second and third grade at all. Therefore, it seems to me that, firstly, such a prescription established by the Ministry of Science and Technology will get free, and then the education of environment will be systematically given to the levels of the second and third grade.

• School Mathematics
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• v.11 no.1
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• pp.111-129
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• 2009

This paper is about didactical transposition, which is to transpose academic knowledge into practical knowledge intended to teach. The research questions are addressed as follows. 1. Are the 13 mathematics textbooks of the 10-Na level indisputable regarding with the didactical transposition, in terms that the order of arrangement and the way of explaining the knowledge of trigonometric functions being analyzed and that its logical construction and students' understandings are considered? 2. Can some transpositions for easier use of didactical manipulative, for more practical and for more principle based be proposed? To answer these questions, this research examined previous studies of mathematics education, specifically the organization of the textbook and the trigonometric functions, and also compared orders of arranging and ways of explaining trigonometric functions from the perspective of didactical transposition of 13 versions of the 10-Na level reorganized under the 7th curriculum. The paper investigated what lacks in the present textbook and sought a teaching guideline of trigonometric functions(especially about sector and graph, period, characters of trigonometric function, and sine rule).

• Journal of the Korean Chemical Society
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• v.61 no.4
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• pp.204-210
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• 2017

In this study, we analyzed the descriptions of the electron movement model and the oxidation number change model presented in the 2009 revised curriculum and textbooks. We also investigated chemistry education major teachers' conceptions of limitations of each model. The electron movement model and oxidation number change model were presented in the curriculum and the textbooks. However, hybrid model was also presented which fail to grasp the limitation of each model. The hybrid model explains redox reactions of covalent bond compounds by electron movement model or even if it explains redox reactions by oxidation number change model, this explanations have the problem of confusing the virtual electron movement with the actual electron movement. A questionnaire and interviews were conducted to investigate chemistry education major teachers' perceptions of redox reactions. As results, many teachers did not recognize the limitations of each model and had difficulties to distinguish redox reactions from acid-base reactions because of the hybrid model.

• Journal of Korean Home Economics Education Association
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• v.22 no.4
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• pp.1-13
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• 2010

The purpose of this study was to examine how the basic directions proposed in the Dietary Education Support Act were reflected in the dietary section of home economics textbooks for middle schools. The eleven different kinds of the 2007 revised textbooks were considered in the study. It was found that all of the textbooks considered reflected well in general the basic directions in the Dietary Support Act - formation of healthy dietary habits, promotion of dietary activities, practice of green dietary, preservation of traditional dietary, utilization of local food products, etc. in terms of their organization and description. However, it was also revealed that there were great differences among them in their treatment of visual materials like figures, photos, graphs, etc., news articles, and interesting anecdotal stories.

• Korean Journal of Comparative Education
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• v.22 no.4
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• pp.51-73
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• 2012

The purpose of this study was to demonstrate the characteristics of ideal figure aimed by the moral education of both Korea and Japan by comparing and analyzing the descriptive content and characters' tendency appeared in the moral education textbooks published in accordance with the current moral education curriculum in Korea and Japan. First, this study examined the tendency of real persons appeared in the moral education textbooks in both countries. To be specific, this study attempted a quantitative comparative analysis of the characters' tendency by expressing the distribution of the characters by appearance time, male-to-female ratio, Koreans and foreigners and characters by occupation and position in percentage. Furthermore, it attempted to demonstrate the particular emphasis in values and virtues in both countries by examining the moral values derived from the characters' decency, way of life and teachings and expressing the distribution of the characters by value and virtue in percentage.

• Proceedings of the Korea Society of Costume Conference
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• 2004.05a
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• pp.13-23
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• 2004

I. 동북공정은 20년 전부터 시작되었다. 1. 1980년 이전의 귀속문제 논의 1) 중국 교과서 - 현재도 "고구려사=한국사" 2) 1962~65년 조.중 공동 고고학발굴대 - "고구려사=한국사" 3) '고구려=중국사' 논리 개발의 시도 - 김육불의 [동북통사] : 한족 위주 역사서술 제1기 한족 개발시대(상고~한.위) 제2기 동호 부여 두 종족의 각축시대(수나라 초기) 제3기 한족 부흥시대(수.당) (중략)3기 한족 부흥시대(수.당) (중략)