• School Mathematics
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• v.18 no.1
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• pp.43-59
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• 2016

The purpose of this qualitative case study is to investigate differences among two gifted middle school students emerging through the process of algebra word problem solving from the covariational perspective. We collected the data from four middle school students participating in the mentorship program for gifted students of mathematics and found out differences between Junghee and Donghee in solving problems involving varying rates of change. This study focuses on their actions to solve and to generalize the problems situations involving constant and varying rates of change. The results indicate that their covariational reasoning played a significant role in their algebra word problem solving.

• Journal of the Korean Society for Library and Information Science
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• v.39 no.2
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• pp.85-105
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• 2005

This paper investigates the integration strategies of school library into school's curriculum from a institutional point of view. For this purpose, this study compares and analyze the role and relationship of school library media program to school's curriculum in Korea, U.S., Japan. Basing on the comparative result, it proposed the school library relation element that must include in national level curriculum in Korea. To the element which it proposes it includes the compulsion assignment of school library assisted instruction. the time allocation of reading and information literacy instruction, the scope and sequence of information literacy instruction, the flexible schedule.

• Journal of Creative Information Culture
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• v.5 no.1
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• pp.45-51
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• 2019

In this paper, virtual reality programming modules were developed for software education advanced courses in elementary and middle schools. And the effectiveness of the developed module was also analyzed. As the result, virtual reality programming module developed in this study was proven to be suitable for software education advanced courses required after basic coding in elementary and middle school. In particular, it is expected that it will be very helpful for the information gifted education program which is carried out in 2,920 gifted education institutions nationwide. Also, it is expected that it will be suitable for STEM education.

• Journal of The Korean Association For Science Education
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• v.36 no.2
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• pp.295-302
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• 2016

In this study, we investigated a learning progression focusing on $5^{th}$ to $9^{th}$ graders' performances with dissolution and solution concepts using the construct modeling approach. We designed a construct map describing hypothetical pathways of the concept development of dissolution and solution by analyzing both National Science Curricula and related studies. A conceptions test consisting of ordered multiple-choice items was developed and administered to 826 students. A revised construct map was derived from analyses of the results based on the partial credit model, a branch of polytomous item response theory. The sequence of dissolution and solution concepts presented in the current science curriculum was found to correspond with the learning progression of the students. However, the lower anchor, the concept of the homogeneity of particles in solution, and the factors affecting solubility were not consistent with the expected levels of the construct map. After revising the construct map, we proposed a learning progression for dissolution and solution concepts with five levels: Students of level 1 (the lower anchor) recognize the particles in the solution but misunderstand various concepts; Students of level 2 understand the homogeneity of particles in solution; Students of level 3 understand solubility and the conservation of particles during dissolution; Students of level 4 partially understand the interaction between particles; and Students of level 5 (the upper anchor) understand the interaction between particles and the factors affecting solubility.

• Journal of Periodontal and Implant Science
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• v.36 no.1
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• pp.125-137
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• 2006

1. 목적 흡연은 치주질환의 주요한 위험 인자 중의 하나이다. 일반적으로 흡연자는 비흡연자보다 비외과적 및 외과적 치주치료에 대한 반응이 덜 효과적인 것으로 알려져 있다. 이 연구에서는 중등도의 만성 치주염이 존재하는 한국인 흡연자와 비흡연자를 대상으로 하여, 비외과적 치주치료인 치석 제거술과 치근 활택술을 시행한 후 6개윌 동안의 임상적 치유 반응을 비교해 보고자 하였다. 2. 방법 20명의 중등도 만성 치주염 환자(흡연자 10명, 비흡연자 10명)를 대상으로 치주낭 깊이(Probing Pocket Depth, PPD), 치은퇴축(GR), 치주탐침시 출혈유무(BOP), #16, 12, 24, 32, 36, 44의 치태지수(Plaque Index, Silness & $L{\"{o}}e$ 1964)를 임상변수로 측정하였다. 치주낭 깊이 (PD)와 치은퇴축(GR)은 전자 탐침(Florida $Probe^{(R)}$ Co. Gainesville, FL)을 이용하여 각 치아당 6군데를 측정하였다. 임상적 부착 수준(CAL)은 치주낭 깊이(PD)와 치은퇴축(GR)의 합으로 계산하였다. 초진시에 전악 임상 검사를 시행하였고, 초진시의 치주낭 깊이에 따라 조사 대상이 되는 치아 부위를 선정하였다. 치주적으로 건강한 부위 $(PD{\leq}3mm)$를 대조군인 1군으로 하고 치주낭 깊이가 4 mm를 초과하고 5 mm 미만인 부위를 2군, 5 mm 이상의 치주낭 깊이를 가지는 부위를 3군으로 설정하였다. 비외과적 치주치료인 치석 제거술, 치근 활택술과 구강위생 교육을 시행하였고 2개월(T1), 4개윌(T2), 6개윌(T3)에 선정된 해당 치아 부위에 대해 임상 재검사를 시행하였다. 3. 결과 BOP와 Plaque Index는 초진, 2, 4, 6개월에 흡연자와 비흡연자 간에 유의할 만한 차이가 없었으나 전반적으로 감소하는 경향이 나타났다. 대조군인 l군에 서는 흡연자와 비흡연자 간에 모든 시기에서 PD, GR, CAL에 유의할 만한 차이가 없었다. 치주낭 깊이가 4 mm를 초과하고 5 mm 미만인 2군에서는 비흡연자에서 6개월에 유의할 만한 치주낭 깊이 감소가 나타났으며, 4개월과 6개윌에 유의할 만한 부착수준의 증가가 관찰되었다(p<0.05). 치주낭 깊이가 5 mm이상인 3군에서는 비흡연자에서 치주낭 깊이 감소가 일관되게 더 많이 나타났으나 통계학적으로 유의할 만한 차이는 6개월째에서만 관찰되었다. 2군과 유사하게 치주낭 갚이 감소는 흡연자보다 비흡연자에서 0.6 mm 더 크게 나타났다. 부착수준의 획득은 2군에서는 4, 6개월째에, 3군에서는 6개월째에 비흡연자에서 유의하게 더 많이 일어났다. 초진시의 치주낭 깊이와 각 시기별 ${\Delta}PD$ 간의 상관관계에서는 치주낭 갚이가 5mm 이상인 3군에서 비흡연자의 경우 6개월째에 가장 강한 상관성이 나타났다($r_s=0.43$, p<0.05). 흡연자에서는 3군에서 어떠한 유의한 상관관계도 나타나지 않았다. 결론적으로 중등도 만성 치주염 환자를 대상으로 한 6개윌의 단기간 연구에서 비외과적 치주치료 후 흡연자에서 비흡연자보다 치주낭 깊이 감소의 개선과 부착수준의 획득이 더 적게 나타나 임상적 치유반응이 좋지 않음을 확인하였다. 이는 흡연이 숙주의 치유반응 부정적인 영향을 주기 때문으로 생각된다.

• Journal of The Korean Association of Information Education
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• v.24 no.4
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• pp.391-400
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• 2020

While artificial intelligence (AI) is attracting attention as a core technology in the era of the 4th industrial revolution, needs for artificial intelligence education to cultivate AI literacy is emerging. In this regard, we developed and applied a project-based AI education program for elementary and middle school students, and analyzed its effects. Participants were assigned into teams with three members, and each team engaged in a project-based AI education program for two nights and three days. In the project, they selected an real-world problem they wanted and devised an AI-enabled artifact to solve it. The effectiveness of the program was investigated with the changes in attitude and efficacy of learners toward artificial intelligence. The results showed that the AI project learning positively changed both attitudes and efficacy toward artificial intelligence at a statistically significant level. This change was more pronounced as the level of perceived programming skills increased, and the level of interest in the project learning increased.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.569-578
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• 2017

The purpose of this study is to investigate the effect of tea meditation intervention on the mindfulness and psychological well-being of middle-aged women with depression. The participants were recruited from the Life-Long Education Center of B university in B City. The research design was 2 (experimental vs control group) ${\times}3$ (pre, post, follow-up). A total of twenty participants were randomly assigned to the experimental or control group, consisting of 10 participants each. The program consists of ten sessions, including psychological well-being improvement activities and mindfulness meditation practices with tea. The levels of mindfulness and psychological well-being (self-acceptance, positive relation with others, autonomy, environmental mastery, purpose of life and personal growth) showed statistically significant increases in the post-program and follow-up measurements, as compared to the pre-program measurements.

• The Journal of Korean Association of Computer Education
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• v.11 no.6
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• pp.1-9
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• 2008

The goal of the education of Information Communication Ethics(ICE) is to improve the consciousness level of adolescents so that they themselves are able to judge between what's ethically right and wrong and, as a result, to take the right behavior. For this, we need to preferentially identify the primary factors in understanding and diagnosing the consciousness level of adolescents on the ICE. To solve this problem, in this paper, we identified four major indices that consist of the ICE consciousness through the meta analysis of the both domestic and international researches from the past 5 years in the related area and then, they are validated by experts. We also analyzed the factors in assessing the ICE consciousness level of adolescents by using the Delphi technique, which, during its analysis, even considers elements that are qualitative or cannot be objectified. Finally we deduced 22 ICE factors given the weight through the AHP of an expert group that consists of experienced teachers and professors in the related area.

• The Journal of Korean Association of Computer Education
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• v.19 no.6
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• pp.69-80
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• 2016

As a 21C core skill, computational thinking has been focused recently, and computer programming education is popular in primary and secondary schools. This paper aims to analyze the computer programming learning results based on gender difference and verify the reasons causing the difference. In this research, we focused on students' abstract thinking level as a variable and used C programming language and the RUR-PLE. Also, in this research, we focused on the concept of abstraction, one of the main component of computational thinking. And then, we analyze 587 high school students' abstract thinking level and survey them in order to find a new method for enhancing programming skill. In addition, we analyzed the causes for the difference in how the abstract thinking level applies when the students understand various structures of computer programs. From the results, we can propose a computer programming education method that enhances students' merits and compensates their drawbacks in the near future.

• Korea journal of population studies
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• v.26 no.2
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• pp.147-173
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• 2003

People with disabilities have been influenced by information technology tremendously. The influence of information technology on people with disabilities varies according to types and degrees of disability. This study analyzed the relationship between information accessibility and types and degrees of disability. Information accessibility is measured PC and internet use and disability classified into 10 types and 3 degrees per given type. The major findings of this study are as follow: (1) there are significant effects of types and degrees of disability on information accessibility; (2) there are differences of information accessibility ranking according to the types of disability between in Korea and USA; and (3) the relationship between degrees of disability and information accessibility is not linear. To accurately assess the level of information accessibility of people with disabilities, disability should be treated as a continuous variable that has values in types and degrees of disability.