• The Mathematical Education
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• v.58 no.4
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• pp.531-543
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• 2019

Continuous probability distribution was one of the mathematics concept that students had difficulty. This study analyzed the definition and introduction of the continuous probability distribution under the 2009-revised curriculum and 2015-revised curriculum. In this study, the following subjects were studied. Firstly, definitions of continuous probability variable in 'Probability and Statistics' textbook developed under the 2009-revised curriculum and 2015-revised curriculum were analyzed. Secondly, introductions of continuous probability distribution in 'Probability and Statistics' textbook developed under the 2009-revised curriculum and 2015-revised curriculum were analyzed. The results of this study were as follows. First, 8 textbooks under the 2009-revised curriculum defined the continuous probability variable as probability variable with all the real values within a range or an interval. And 1 textbook under the 2009-revised curriculum defined the continuous probability variable as probability variable when the set of its value is uncountable. But all textbooks under the 2015-revised curriculum defined the continuous probability variable as probability variable with all the real values within a range. Second, 4 textbooks under the 2009-revised curriculum and 4 textbooks under 2015-revised curriculum introduced a continuous random distribution using an uniformly distribution. And 5 textbooks under the 2009-revised curriculum and 5 textbooks under the 2015-revised curriculum introduced a continuous random distribution using a relative frequency density.

• Journal of the Korean Society of Earth Science Education
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• v.11 no.3
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• pp.237-243
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• 2018

The purpose of this study is to analyze the contents related to a subject 'Earth and Mooon' from elementary science textbooks of the 2009 revised curriculum and elementary science textbooks of the 2015 revised curriculum. For the research, the team selected and analyzed the contents of the 'Earth and Moon' unit in the elementary science textbooks of the 2009 revised curriculum and 2015 revised curriculum. As a result of the research, first, there has been no significant change in achievement standards of the curriculum as the science textbook revised from 2009 curriculum to 2015 curriculum. Second, the two curriculum did not differ much in specific textbook contents statement or development, but they showed much change in presentation of exploration activities in curriculum as well as the specific exploration activities presented in the textbooks. Third, compared to science textbooks of the 2009 revision the 2015 revision used more pictures and illustrations. Forth, there have been few changes related to experimental observation, but the activities to organize the unit in 2015 revision have been strengthened compared to the 2009 revision.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.80-89
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• 2017

The purpose of this research is to consider whether current science textbook is designed to let children properly obtain scientific knowledge through research study and at the same time provide an implication to help development of science textbook for the 2015 revised curriculum through comparing and analyzing of illustration in science textbooks of grade 5 and 6 published based on the 2007 curriculum and on the 2009 revised curriculum. The conclusion of comparison and analysis on illustration of the grade 5 and 6 science textbooks in the 2007 curriculum and the 2009 revised curriculum as follows. First, according to the comparison and analysis result on in the textbook, science textbook of year 2009 revised for grade 5 and 6 had 1.65 illustration per page and for the 2007 curriculum, it had 1.98 illustrations per page having 0.83 times more illustrations than that of the previous one. Second, the types of illustrations both textbooks had a higher ratio of pictures that are very detailed and objective which can identify scientific facts. In terms of role of illustration, illustrations providing various and realistic data related to the learning for students to have enough scientific experiences accounted for the most ratios.

• School Mathematics
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• v.14 no.4
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• pp.531-552
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• 2012

In December of 2009, General Guidelines of Curriculum Revised in 2009 was announced and research on corresponding mathematics curriculum revision has been initiated from that period. Finally, in August 2011, Mathematics Curriculum Revised in 2009 was announced. Based on the examination the backgrounds and the basic directions of revision newly reformed mathematics curriculum should be applied in math class effectively and efficiently. According to this purpose, this paper first of all finds out what are the major points or difficulties to be caused by managing 'Mathematics Curriculum Revised in 2009' according to the change of 'General Guidelines of Curriculum Revised in 2009'. They are i) the implementation of grade band system, ii) management of differentiated class, and iii) increasing or decreasing of 20% in math class hour. According to those three points to be changed and reinforced newly in new curriculum, this paper investigates the alternatives and policy of dealing with smoothly and efficiently those issues while solving the difficulties.

• Journal of Educational Research in Mathematics
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• v.25 no.2
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• pp.207-223
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• 2015

This study aims to find ways for securing continuity of elementary mathematics curriculum and kindergarten curriculum. To do this, we considered the status of 'mathematical exploration' in Nuri curriculum and analysed the correspondence of content-domains and the continuity between Nuri curriculum for ages three to five and 2009 revised national elementary mathematics curriculum, based on the reconstructed achievement criteria. The result of these analyses reveals that the classification of five content-domains both for 'mathematical exploration' of Nuri curriculum and for 2009 revised national elementary mathematics curriculum coincides. We also recognized the reconstructed achievement criteria which are considered as reverse continuity or as discontinuity of Nuri curriculum and 2009 revised national elementary mathematics curriculum in all the five content domains. The former means being lower in levels or reduction in ranges from Nuri curriculum to elementary one. The latter means that some reconstructed achievement criteria are included in only one of the two curriculum. Based on these results, we suggested several ways to secure the continuity between Nuri curriculum and 2009 revised national elementary mathematics curriculum in the perspective of mathematics education.

• Journal of the Korean Chemical Society
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• v.63 no.4
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• pp.289-306
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• 2019

The purpose of this study is to compare the contents of chemistry textbooks developed according to the 2015 revised curriculum with the contents of the 2009 revised curriculum to research the change in "the development and use of models". To do this, we analyzed 8 kinds of Chemistry I textbooks and 6 kinds of Chemistry II textbooks from the 2015 revised curriculum and compared them with 4 kinds of Chemistry I textbooks and 4 kinds of Chemistry II textbooks from the 2009 revised curriculum. The scope of the analysis was the explanations of the textbooks related to aqueous electrolysis experiments. In order to compare the contents regarding electrolytes when the same experiments are interpreted with different models, we analyzed contents of 4 kinds of middle school science textbooks from the 2015 revised curriculum and 9 kinds of middle school science textbooks from the 2009 revised curriculum. As a result of the analysis, the same experiment was explained by different models according to the grade level and unit, and all explanations were limited to a single model. Also, the tendency to limit the kinds of electrolytes for controlled experimental results is more pronounced in the 2015 revised curriculum than in the 2009 revised curriculum. From this results, we suggest that efforts are needed to reflect the "development and use of models" in chemistry textbooks developed according to the 2015 revised curriculum.

• Journal of Fisheries and Marine Sciences Education
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• v.25 no.4
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• pp.958-972
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• 2013

The purpose of this study is to analyze on high school teachers' stage of concern(SoC) on 'Creative-Experience Activity' in 2009 revised national curriculum and investigate the improvements of their levels. The subjects for this study were 234 high school teachers through out all part of the Korea country. The instrument for this study was developed according to the Hall & Hord(2006)'s stage of concerns questionnaire of Stage of Concern. The Data were analyzed by Profiling of teachers' concern and one-way ANOVA. The major findings of this study were as follows: First, 85.25% of the high school teachers were in stage of Awareness. 6.34% of teachers were in stage of Information. Most of high school teachers' concern about 'Creative-Experience Activity' was generally 'non-user' stage that unconcerned. Second, there were not significant differences in teachers' stage of concern according to their sex and teaching career except for region. In region, the teacher in metropolis tent to interest getting new information than small and midium size city. We need to make an effort to transfer from 'non-user' stage to 'early-user' stage of and 'impact' stage. To do so, we may sublate too much curriculum revise and start teacher training for 2009 revised 'creativity-experience activity' curriculum. The result of the study provide that there are not curriculum implementation success without teachers' concern about revised curriculum.

• Journal of The Korean Association For Science Education
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• v.35 no.2
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• pp.277-288
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• 2015

The purpose of this study is to find the point for improvement through the comparative analysis of the 2007 & 2009 revised science curriculum, and the NGSS of the United States with Bloom's revised taxonomy. The results of the analysis confirmed that the revised curriculum in 2009 compared to the revised curriculum in 2007 has expanded the type of cognitive process and knowledge, which promote a higher level thinking. However, the revised curriculum in 2009 has been biased to the type of specific cognitive process and knowledge in cognitive process dimension and knowledge dimension as compared to the NGSS of the United States. In the revised curriculum in 2009, the type of cognitive process such as 'analyze,' 'evaluate,' 'create,' and the type of knowledge such as 'meta-cognitive knowledge' have been treated inattentively. In addition, through comparative analysis, it was identified that the type of cognitive process and knowledge that were neglected in achievement standards were not dealt with in the learning objective of teachers' guides, either. The revised curriculum should consist of achievement standards in comparison to the previous curriculum to reflect better the goals of science education. Therefore, it is necessary to create an achievement standards including various types of cognitive processes and knowledge by improving the method of statement of achievement standards of science curriculum.

• Journal of Digital Convergence
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• v.7 no.2
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• pp.21-33
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• 2009

The aim of this study is to find out problems between the '7th National Curriculum' and '2007 Revised National Curriculum' that would initially apply from 2009 and then to suggest better ways to improve computer education in Middle schools. A survey was carried out with a questionnaire. Based on the result, a comparison was made and a suggestion has been derived: Firstly, the computer subject should not be treated as a rival to others anymore, rather it should be considered as an essential subjects. Secondly, teachers who take computer subjects as their major should be allocated to middle schools. Thirdly, computer subjects should be taught systematically from elementary and be continued throughout in order to promote the level of the computer science education. Fourthly, the advantages of computer utilisation should be taken into account to layout the computer curriculum that is practicable and learner-centered. Finally, teachers should recognise the main aim of computer education and teach computer subjects to be useful in education. Though the revised version is not perfect the more the curriculums are revised, the better they might be expected to be developed. Consequently, whenever the newly revised computer curriculum emerges, the defects should be identified and addressed in order to achieve the aim of the computer curriculum.

• Journal of Korean Home Economics Education Association
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• v.28 no.2
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• pp.1-19
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• 2016

The purpose of this study was to design curriculum content structure integrating three systems of actions for 2009 revised current home economics curriculum. For the development of content structure and content elements, a development team of two home economics scholars, a cooperating team of three home economics teachers, and an expert team of 15 home economics teachers and professors were organized. Phase 1 of curriculum development was developed by integrating three systems of actions with traditional home economics content areas of clothing, food, housing, consumption, and family by the development team. It is examined by the cooperating team and in phase 2 is recommended to build matrix of units of the current curriculum and the three systems of actions. The final phase of curriculum development illustrated a content structure integrating the sub-units of 2009 revised current curriculum and the three systems of action following the expert group's professional opinion.