• The Journal of Korean Association of Computer Education
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• v.8 no.6
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• pp.45-53
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• 2005

In this paper, we propose an improved method of differentiated curriculum in social studies class that can be immediately used in the class. There are two major reasons that differentiated curriculum has not been applied to actual educational programs. One reason is the inefficient progress of differentiated curriculum derived from students' self-study based on individual projects and teacher's excessive investment of time in the development and management of individual researches. The other attribute is the difficulty in distinguishing students' academic level due to the lake of distinct criteria, because students are classified into merely two groups, in-depth group and supplementary class. To cope with these problems, we adopted a cooperative learning to enhance the educational effect of students of the similar level. Experimental results validate that the proposed method is effective in the course of social studies.

• Journal of the Korean School Mathematics Society
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• v.22 no.3
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• pp.257-275
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• 2019

Technology-based convergence education is being emphasized for students in the era of the fourth industrial revolution. In math education, students need to increase their capabilities in the future by having them experience mathematical problems using robots and sensors, a key technology in the era of the fourth industrial revolution. To this end, it is necessary to present educational uses for educational robots in relation to math and curriculum from a 'mathematics education perspective' and analyze its educational use in relation to the mathematics and curriculum, considering the role of mathematics at the base of the process of exploring real-world phenomena and solving problems. Based on the analysis of Van Hiele levels of development in geometry and the LOGO activity level of Olson et al.(1987), this study analyzed and presented the level of LEGO Mindstorm activity, a representative educational Robot capable of collecting and analyzing data and programming in the form of block language, in the first to fourth level.

• School Mathematics
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• v.17 no.4
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• pp.633-652
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• 2015

The purpose of the present study is twofold: one is to understand secondary mathematics teachers' capacity to sort out given tasks based on Stein & Smith(1998)'s Cognitive Demands of Mathematical Task Framework; the second is to examine how the teachers assess the levels of cognitive demand indicated in students' reponses and how they modify the tasks to elicit the students' higher levels of cognitive activity. The analysis of 45 teachers' responses to the survey indicates that the teachers, in general, could select appropriate tasks for the given goal of the lessons but some made the decision merely by their appearances. Even though the teachers chose a particular level with different reasons amongst each other, most teachers could correctly evaluate the levels of cognitive demand of the students' responses. Finally, teachers could pose cognitively demanding tasks using various methods, but a number of them felt challenged in creating word problems that were realistic and aligned with curriculum.

• Journal of the Korean Geographical Society
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• v.44 no.3
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• pp.410-427
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• 2009

This study aims to rethink the meaning of graphicacy, discuss the possible criteria to evaluate the level of graphicacy, and show how the graphicacy differs through different grades. First, it finds that as school grades advance, implicit information processing abilities, and conceptual information processing abilities were more required comparing to explicit information processing abilities, when interpreting graphic data. Secondly, the percentage of items which examinee showed a proficient level, decreased as school grades advanced. Thirdly, the graphicacy level of sixth graders was the status of being able to derive explicit information from pictorial maps and read implicit information in simple contour map or line graphs. Ninth graders were able to infer causal relationship between geographic phenomenons by utilizing graphic materials. Tenth graders could read graphic materials by utilizing simple knowledge and experience.

• 한국경영정보학회:학술대회논문집
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• 2007.06a
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• pp.773-779
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• 2007

급변하는 기업 환경 속에서 기업들은 선택과 집중 전략의 일부로 기업의 역량을 전문영역에 집중하고, 물류관리 등의 업무들은 3자 물류업체에 아웃소싱하고 있다. 이로 인하여 물류관련 산업이 전 세계적으로 급성장하고 있으며, 국내 3자 물류업체들 역시 경쟁우위를 확보하기 위하여 규모의 경제를 통한 비용 절감, 물류 기업들 간의 파트너십을 통한 고객서비스 향상, 신속하고 정확한 업무처리를 지원할 수 있는 정보화에 노력하고 있다. 그러나 대다수 국내 3자 물류업체들은 규모가 영세하고, 정보화 투자 및 운영을 하기에는 자금과 인력이 부족하여 적극적인 정보화 추진이 어려운 실정이다. 이에 따라 3자 물류업체들의 정보화 수준 향상을 위해서는 정확한 정보화 수준 파악과 그에 기초한 정보화 정책 수립이 선행되어야 한다. 그러나 국내 3자 물류업체의 정보화 수준 평가에 있어 정부기관 및 다른 산업을 대상으로 한 기존의 정보화 수준 평가 모형을 그대로 반영하기에는 적합하지 않다. 따라서 본 연구에서는 국내 3자 물류업체의 정보화 수준을 파악하기 위하여, 3자 물류업체들의 특성을 반영한 평가 모형을 개발하고, 이를 국내 3자 물류업체들을 대상으로 설문 조사하여 평가 모형의 타당성을 검증하고자 한다. 본 연구모형은 물류산업에서 가장 활발한 활동을 하고 있는 3자 물류업체들의 정보화 수준 파악을 위해 잣대가 될 수 있으며 향후 정보화 정책 수립, 정보화 효과 분석 등의 사후 평가 자료를 얻는 데 활용 될 수 있다.

• The Korean Journal of Food And Nutrition
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• v.14 no.3
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• pp.255-262
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• 2001

랩포장 및 진공포장이 냉장 돈육이 저장성에 미치는 영향을 조사하기 위해 돈육의 등심부의를 랩포장 및 진공포장한 후 냉장저장하면서 저장기간에 따른 세균수,휘발성 염기질소, pH, 보수력 드립감량, 가열감량 및 경도의 변화를 측정하였다. 랩포장의 경우 일반세균수는 저장 10일에 2.0$\times$$10^{7}$ CGU/㎤의 수준에 달하였고, 휘발성 염기질소 함량은 저장 15d일에 26mg%로서 식육의 부패수준인 20mg%를 초과하였으며 , pH는 저장 7일 이후 급속하게 증가되어 저장 10일에 5.98의 수준이었다. 반면에 진공포장의 경우에는 일반세균수가 저장 30일에 7.7$\times$$10^{6}$ CGU/㎤의수준에 달하였고, 휘발성 염기질소 함량은 저장 30일에 19.8mg%로서 부패수준인 20mg%에 근접하였으며, pH는 저장기간이 경과됨에 따라 매우 완만하게 증가되어 저장 30일에 pH5.75의 수준이었다. 보수력은 저장 1일에는두 시험구가 75.0%의 수준으로 비슷하였으나, 저장기간이 경과됨에 따라 랩포장이 진공포장에 비해 급속하게 증가되었다. 드립감량과 가열감량은 저장초기인 저장 7일까지는 진공포장이 랩포장에 비해 다소 높은 수준이었으나 그 이후에는 랩 포장이 높은 수준이었다. 경도는 두 시험구 모두 저장 1일에 가장 높았고, 저장 기간이 경과됨에 따라 점차 저하되었으며, 랩포장에 비해 전공포장이 비교적 완만하게 저하되었다.

• Communications of Mathematical Education
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• v.28 no.3
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• pp.395-422
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• 2014

In this paper, we obtain the step inteaching high school leve-based class utilizing cooperative learning lessons using level-type tutoring to improve academic achievement and mathematics attitudes. The details are as follows. First, we develop the teaching and learning model for the level-type instructional development and for the application to project work. Second, we seek to height academic achievement by applying the level-type work sheets in conjunction with cooperative learning. For this problem, we will focus on the following issues. First, how will you using level-type tutoring level TAI cooperative learning in order to improve academic achievement and develop the learning ability in mathematics? Second, how can you step utilizing TAI instructional level of cooperative learning in mathematics classes to improve mathematics learning attitudes? Third, how will you some reaction step work sheets utilizing level TAI cooperative learning of students for mathematics. Results of this study are as follows. First, in the experimental group compared to the comparison group was improved academic achievement. Second, in the experimental group compared to the comparison group learning attitudes could help. Third, the level of cooperative learning instructional model utilizing the TAI in the experimental group compared to the comparison group represents a significant response was seen.

• School Mathematics
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• v.14 no.3
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• pp.315-330
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• 2012

Mathematics educators have tried to teach mathematics to all students who are at any mathematical level by differentiated math instruction from late 1990s in Korea. The common differentiated math instruction separates students into two or three groups according to their mathematical ability and then different activities and tasks are given to each group. This kind of instruction fosters negative attitudes to mathematics to low level students and fix them at low level. So I investigated new mathematics instruction considering able students and low attainers at the same time. This new method is based on using open problems in math class. All students can respond to an open problem in different ways. If teachers could relate all varieties of answers got from students at every level to build good understanding the concept which the problem target at, low attainers could move to their potential developmental levels. This kind of instruction can change low math attainers' negative attitudes to good ones to mathematics and foster their confidence in performing mathematics.

• Spatial Information Research
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• v.21 no.6
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• pp.81-89
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• 2013

Recently, several studies conducted for other countries show that housing price has very close relationship with personal or neighborhood level obesity. Also these studies suggest the use of housing price as a new SES(Socio-Economic Status) variable for health related studies. In this study, whether this relationship can be found in regions of the Seoul Metropolitan Area is investigated. The results of this study show that, as in the cases of other countries, the regions with SES represented by higher housing prices show lower obesity levels. Further, the results show that the differences in regional housing prices well explain the variations of regional obesity levels as other traditional SES variables do. This finding indicates that housing price which is objectively, continuously, and spatially measured in Korea can be used as a new SES indicator for health research in Korea.

• Journal of Korea Society of Industrial Information Systems
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• v.14 no.3
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• pp.58-75
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• 2009

As practicalization and commercialization of the technologies invented from the national R&D(Research & Development) project has been emerging as an important issue, the need for a tool for R&D project management has been increased. Technology Readiness Levels model(TRL) has currently been used for R&D project management because it provides distinctive definition of the nine levels in the progress of technology development starting from the basic research level to the utilization level. However, it is difficult to adopt the model for a large-scale national R&D project in which multiple research projects are involved simultaneously. In addition, TRL demands evaluation of research projects done by relevant experts and offers no specific measures determining the level of technology development. This study uses Delphi method to develop the measurement system helping to determine technology readiness levels for the technologies invented in a large scale national R&D project. The proposed model includes definition and measurement scles for each level in TRL.