• Journal of the Korean Chemical Society
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• v.57 no.5
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• pp.640-655
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• 2013

The purpose of this study is to analyze the cognitive demands level of the description about 'changes of state' and 'kinetic theory' on the 'science 1' textbooks by the 2007 revised curriculum. The three types of curriculum analysis taxonomy have been used to analyze the cognitive demands level of those contents on the 6 kinds of 'science 1' textbooks. The most higher level of cognitive demands about the concepts have been discussed here due to the focus of the concepts. The first, the cognitive demand level about 'three states of substances' depending on the motion of their particles in 6 textbooks is a early formal operational stage because of using by the application of kinetic theory. The second, the cognitive demand level about 'diffusion' and 'evaporation' is a early formal operational stage, because the particles move around faster so they can change their position. The third, the cognitive level of the pressure and volume in a gas is a early formal operational stage because of explaining only phenomena in simple correspondence with formal model of kinetic theory. And simple functional relationships beyond linear on the graph of the volume and pressure of gas, the volume and temperature of gas is also a early formal operational stage. The fourth, the cognitive level of the energy of heat by a change of the state is also a early formal operational stage because kinetic theory picture accepted as providing explanation by the change of the state. And functional relationships beyond linear on the graph of the explanation of boiling point of water in water is also a early formal operational stage.

• Journal of Educational Research in Mathematics
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• v.16 no.1
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• pp.1-23
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• 2006

It is regarded as critical to analyse and re-appreciate Euclidean geometry for the sake of improving school geometry This study, a critical analysis of demonstrative plane geometry in current secondary school mathematics with an eye to the viewpoints of 'Elements of Geometry', is conducted with this purpose in mind. Firstly, the 'Elements' is analysed in terms of its educational purpose, concrete contents and approaching method, with a review of the history of its teaching. Secondly, the 'Elemens de Geometrie' by Clairaut and the 'histo-genetic approach' in teaching geometry, mainly the one proposed by Branford, are analysed. Thirdly, the basic assumption, contents and structure of the current textbooks taught in secondary schools are analysed according to the hypothetical construction, ordering and grouping of theorems, presentations of proofs, statements of definitions and exercises. The change of the development of contents over time is also reviewed, with a focus on the proportional relations of geometric figures. Lastly, tile complementary way of integrating the two 'Elements' is explored.

• Hwankyungkyoyuk
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• v.24 no.2
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• pp.35-53
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• 2011

The purpose of this research is placed on the development and application of environmental play programs for elementary school students their utilizing the neighborhood learning gardens in their districts to find its effectiveness. The research questions drawn to attain the purpose of the research are as follows. Initially, analyze the contents related to the plant appearing in the textbooks of wise life, science and practical arts of the 7th elementary school curriculum. Secondly, develop a plant utilizing environmental play program targeted towards the 4th grade elementary school students with the results of the textbook analysis as the foundation. Third, apply the plant utilizing environmental play program into the classroom to verify its effectiveness. Based on the conclusion of this research, the following is to be proposed. First, the revitalization of regional environmental education utilizing the various surroundings of the region is essential. Also, the current method of education, which is focused on theoretical knowledge, and being operated in most of the schools need to be changed over to diverse environmental education programs that are linked with the region. For this, an internet based database, information sharing and exchange program centralized around the regional environmental education center needs to be prepared. Moreover, since this research had developed an environmental play program utilizing plants that focused on the 4th grade elementary school students to verify its effectiveness, the development for environmental play programs dealing with various themes for each grades is required. Lastly, although this research has verified the effectiveness in the variables of ecological knowledge, environmental susceptibility, environmental attitude, environmental concern, environmental function and responsible environmental behavior amongst the variables of environmental literacy but there requires a succeeding research considering the variables that haven't been included in this research.

• Journal of Science Education
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• v.44 no.1
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• pp.38-49
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• 2020

The purpose of this study is to analyze the paper test items of high school physics I 'Space-Time and the Universe' unit and how similar the textbook goals are to the cognitive and content areas. This study analyzed paper test items used from nine high schools and KICE about the unit. In order to analyze the distribution of items, they were classified by contents and by cognitive level which is knowledge, comprehension and application levels. As conclusion, application level items were a few, and unbalanced contents distribution appeared in school items. In comparison through the ratio difference index, the objectives of the textbook and the school items were very similar, but the similarities were low when comparing the school items with the KICE items. Based on the above, we suggested some ways to increase the validity of test items.

• The Journal of the Korea Contents Association
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• v.20 no.5
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• pp.23-36
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• 2020

This study indicates there is a need for delivering key academic vocabulary to students with multi-cultural backgrounds before they enter middle school and thus select academic vocabularies necessary for satisfactory middle school education and self-directed learning methods using a more focused selected academic vocabulary list. To this end, we first examine the vocabularies appearing in the main Korean language, math, social studies and science textbooks used in the first year of middle school and compile the most practical academic vocabulary list. Then we offer a selection method for the main academic vocabulary from these compiled vocabularies. We also propose a self-directed vocabulary learning model for using these selected academic vocabularies and an academic vocabulary learning application as a prototype. As a result, students with multi-cultural backgrounds will be able to adapt to middle school education more quickly when they learn the necessary academic vocabularies on their own using the academic vocabulary learning application.

• Journal of the Korean Society of School Health
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• v.21 no.1
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• pp.33-41
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• 2008

Purpose : The purpose of this study was to provide the basic data for p lanning oral health education in elementary schol. Methods conducted using a postal, self-administered questionnaire. A questionnaire containing 19 questions about oral health education which was provided by health teachers in elementary schol was used for data colle ction. Total response rate was 64.3% (119 out of 185). Results : Oral health education except one through textbooks was conduc of which taught oral health themselves. The contents of oral he alth education through special clas was mainly focusing on the tothbrushing method, dental caries, and the use of fluo ride. Acording to the grades clasified by the level of education, the order was the 3rd, 1st, and 2nd grade, which mea ns that the lower grades got more training than the h was acquired through the internet (72.2%), health-related organizations or academies (51.5%). Also, materi als for oral health education were obtained from health-related organizations or academies (67%), self-productio n (49.5%). According to the data during the past 5 years it was found that 13.4% health teachers had oral health-related that more traing neded to be conducted from 89.7% health tea chers. The most dificult problem in oral health education were insufficient time (56.7%). Conclusion : For effective oral health education, there needs a developmen t of targeted goal to achieve a systemic oral health education for each grades as wel as a ned for as health teachers to eficiently acquire knowledge and materials for oral health education, it is necessary to hold regular workshops for health teachers, and develop and distribute appro priate educational materials.

• Journal of The Korean Association of Information Education
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• v.24 no.3
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• pp.215-223
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• 2020

The results of the analysis of the 523 questions presented in the six textbooks and SW and robot units in the Blosser four-step classification categories are as follows. First, in the software unit, the analysis results showed that 77.1% were closed questions and 22.9% were open questions. Second, in the robot unit, the analysis results showed that 74.8% were closed questions and 25.2% were open questions. The CT Trigger Question was developed to overcome the limitations of the textbook questions, which were mainly closed questions, and to directly or indirectly induce computational thinking that teachers can utilize according to their educational content and activities.

• Journal of Environmental Science International
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• v.17 no.9
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• pp.981-992
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• 2008

This study examined how to produce new methods of copper (II) sulfate crystallization by using a small-scale chemistry tool such as small-scale reaction surface and petri dish. The making of copper(II) sulfate is included in the 5th grade elementary science textbooks. Various copper(II) compounds were reacted with a 2 M sulfuric acid solution. The result of this study is as follows: Seven small amounts of copper(II) compounds were reacted with a few drops of 2 M sulfuric acid solution at room temperature to make a copper(II) sulfate crystal of triclinic shape. Using the petri dish method, a copper(II) sulfate crystal could be identified within one hour of reacting copper(II) hydroxide, copper(II) carbonate, copper(II) nitrate, copper(II) perchlorate, cupric(II) formate from a few drops of 2 M sulfuric acid solution at room temperature. When using the lap top method for copper(II) perchlorate, cupric formate, a proper crystal could be identified within one hour as well. SSC methods were used for the first time to make a copper sulfate crystal via chemical reaction. We can make a copper(II) sulfate crystal using a simple method which is easier, safer and saves time in class. And since a small quantity of chemicals are being used in SSC chemical methods, waste is greatly reduced. This lessens the amount of environmental problems caused by the experiment. This can be helpful in preserving nature. In addition the cost of chemical and laboratory equipment is greatly reduced because it uses material that we find in our daily lives. There will be continued study of small-scale methods such as improvement of new programs, study and training of teachers, and securing SSC tools. I would like to suggest such as SSC methods are applicable in elementary School Science. I would like it to become a wide spread program.

• The Journal of Korean Association of Computer Education
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• v.13 no.3
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• pp.35-45
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• 2010

In this thesis, newly distributed informatics-1 textbook is analyzed according to the curriculum for middle school revised in 2007 and, as a result, a questionnaire is conducted to find solutions for early adoption of informatics-1 textbooks. The sample of this survey was limited to Kyungi province-based middle school teachers on Informatics-1. Items of the survey were chosen to explore the degree of satisfaction of teachers on the informatics-1 textbook and to discover contents requiring further necessary revision. Out of seven items concerning the satisfaction of the textbook, the item with the most positive responses was 'the consistency with the curriculum' with 95%. Also, the item with the most negative responses was 'the adequacy of contents and their organization' with 13%. In conclusion, we, based on the results from the questionnaire, proposed the introduction of various lecture materials and the training of teachers to learn new teaching methods.

• Journal of the Korean earth science society
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• v.32 no.1
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• pp.73-83
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• 2011

A new method was developed to better understand the principle of Coriolis force. We also investigated the understanding of 5 10th grade students and analyzed their responses. Since no clear explanation about the nature of a rotating disk is provided in school textbooks, it tends to be misunderstood as the earth surface revolving on its axis pointing to the North Pole. This study was carried out focusing on the fact that a rotating disk is the tangential plane at arbitrary latitude. Results showed that there are changes in students' conceptions on the principle of Coriolis force with a new understanding of the rotating disk. In conclusion, a new method used in this study helped students better understand the link between Coriolis force and rotating disk. The method would be helpful to clarify the principle of Coriolis force in school science.