• Journal of The Korean Association of Information Education
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• v.11 no.4
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• pp.497-504
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• 2007

This study proposed the unplugged learning strategy of computer science that makes more easily to understand learning contents and to improve logical thinking of learners in elementary school. We reorganized the contents of data structure in computer science. The students write project papers from their own experiences and daily lives in the classroom, not in the computer room as applying unplugged learning methods. The result of this study shows that students can better understand computer through a study method of computer science on their step of growth. Through this study, the learners can be the abilities of organizing digital data and increasing the logical thinking, based on information education.

• Journal of the Korean School Mathematics Society
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• v.12 no.2
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• pp.195-227
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• 2009

The study was designed to describe the pre service teachers' development of their TPCK throughout the teacher preparation program that integrated technology throughout the program and how they succeeded in teaching with technology in the actual classroom during student teaching. Multiple data sources were used to obtain information toward answering the research questions. Overall, the emphasis of the teacher preparation program in this study in helping preservice teachers to acquire TPCK transformed the preservice teachers' understanding described by the four components of TPCK. However, the diversity of beliefs, teaching, and technology background affected their understanding and development of TPCK throughout the program.

• Journal of Engineering Education Research
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• v.13 no.6
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• pp.164-170
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• 2010

This article explores the effects of the RBI(Robot Based Instruction) for promotion of students' interaction in elementary school. It was found that Cognitive Affective Metacognitive interaction is evenly spread in RBI. It was particularly high the ratio of metacognitive interaction. According to the analysis result of learner's activity by the detailing, it was observed that robot media promoted students' interaction. Also, metacognitive interaction about clarification and elaboration was promoted lively in the RBI situation. Therefore, RBI was helpful to promote of students' interaction in elementary school.

• Journal of Elementary Mathematics Education in Korea
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• v.10 no.2
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• pp.127-150
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• 2006

The purpose of this study is to apply the principles of CGI(Cognitively Guided Instruction) into mathematics class in Korean elementary schools and to explore which mathematical concepts Korean students have and how they use informal knowledge and procedures to solve problems. In addition, this study tries to analyze difficulties that teachers might face when they are planning mathematics teachings based on CGI. The conclusions of this study are followings: First, the mathematics teaching based on CGI provides opportunity for students to communicate about mathematical knowledge that they know, The students are sure of their thoughts and learn from others by presentation. Second, the mathematics teaching based on CGI make students think mathematically. The students try to understand the meaning of problems and find various ways. Third, teachers should lead appropriate environment for the mathematics teaching based on CGI. They should offer proper problems and encourage their students to ask and answer questions respectively.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2018.06a
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• pp.21-21
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• 2018

다양한 소재(금속, 세라믹, 고분자 소재 등)들이 3차원 형상기반 적층제조법에 적용되고 있는데, 금속 소재를 이용하여 3D 프린팅 법으로 치과용 수복물을 제조하는 연구가 많이 보고되고 있다. 하지만, 티타늄 또는 티타늄 합금 분말을 이용하여 3D 프린팅 법으로 제작한 치과용 보철물에 관한연구 보고는 많지 않다. Kanazawa 등 (2014)은 Ti-6Al-4V 합금분말을 이용하여 SLM법으로 총의치 용 framework를 제작하여 주조법으로 제작한 것과 비교 평가하였고, Mangano 등(2013)은 Ti-6Al-4V 합금분말로 지름이 작은 일체형 (1-piece narrow-diameter) 임플란트를 SLS법으로 제작하여 16명의 환자에게 식립한 다음, 2년간 관찰하였고, Mangano 등 (2014)은 cone-beam computed tomography (CBCT) data를 3D이미지로 변환시켜 DLMS법으로 치근 형상의 임플란트를 제작하여 15명의 환자에게 식립한 다음, 1년간 관찰하였다. 또한 서울대학교 및 연세대학교 치과생체재료과학교실 (2016)에서는 3D 프린팅 법으로 제작한 티타늄 시편과 기계 가공한 티타늄 시편의 물성을 비교하였다. 그러나 티타늄 합금 분말을 이용하여 3D 프린팅 법으로 제작한 치과용 보철물을 실제 임상에 적용하는 단계에서 기존 기계가공 방식으로 제작한 티타늄 보철물과 3D 프린팅 법으로 제작한 티타늄 보철물의 물성과 표면특성을 다양하게 비교 평가하는 것이 필요하여 본 연구에서는 3D 프린팅 법으로 제작한 티타늄 시편과 기계 가공한 티타늄 시편의 물성특성과 표면특성을 비교하여 조사하였다.

• Journal of Digital Contents Society
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• v.12 no.1
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• pp.123-131
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• 2011

The purpose of this study is to discover if the use of computer technologies in computer-assisted language learning, in the aspect of vocabulary learning, is both effective and useful. The technique of using multimedia lessons, using the computer, offers a variety of language learning tasks in relation to the four basic language learning skills. Korean students have been accustomed to a cramming style of education, and they utilize rote memorization for learning vocabulary. This study consisted of surveys and experiments, using specific multimedia language learning courseware exercises on three different age groups. The study explores the issues and problems that followed, and how teachers could effectively apply or enhance their vocabulary teaching through computer-assisted multimedia which is suited for a variety of levels versus the classroom off-line vocabulary learning application which is suited to one level.

• Education of Primary School Mathematics
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• v.10 no.1 s.19
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• pp.1-13
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• 2007

For the last 30 years many researches were conducted to supply a lot of information on brain that were worth using in teaching and learning. They have showed that students received information through multi-path, and used familiar learning sense to present the received informations. However, nowadays only visual materials are mainly used in mathematics classroom. The purpose of this research is aimed to investigate implications of which learning senses are dominated to learn mathematics. Learning sense were catagorized to visual, auditory, and kinesthetic sense according to Politano & Paquin's classification. We surveyed student's learning senses using questionares. Subjects were composed of 141 elementary students, 117 middle school students, 145 high school students,, and 99 college students. T-test were used to investigate whether there are differences in student's learning senses according to grade levels or not.

• 한국정보교육학회:학술대회논문집
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• 2008.01a
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• pp.263-268
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• 2008

학교의 학습 과정에 있어서 학습자 간의 학습 능력의 차이는 존재하며 이를 해결하기 위해 교육과정에서는 개별 학습과 수준별 학습을 권장한다. 유무선 인터넷을 통한 수준별 학습은 최근에 많은 연구가 되고 있는 u-러닝(Ubiquitous Learning) 환경에도 부합하며 학습자 개개인이 자신의 속도와 수준에 맞게 자기주도적으로 학습을 하기에 알맞은 방법이라 할 수 있다. 이에 본 연구에서는 학습자가 시간과 공간에 구애받지 않고 자율적으로 수준에 맞게 학습할 수 있는 수준별 학습 시스템을 설계하였다. 특히 시스템에 체계성을 더하기 위해 개별화 학습 체제 중에서 과거 많은 연구를 통해 그 효과성이 입증된 Keller의 PSI(Personal System of Instruction) 이론을 활용하여 시스템의 각 과정을 설계하였다. 본 시스템의 장점은 다음과 같다. 첫째, 학습자가 원하는 시간과 공간에서 자신의 속도에 맞게 학습할 수 있으므로 자기주도적인 학습 능력을 기를 수 있다. 둘째, 시스템 구성상 평가를 통해 일정한 기준에 미달하면 목표에 도달할 때까지 계속 학습하고 도전해야 하므로 궁극적으로 완전학습에 도달할 수 있다. 셋째, 제한된 교실 상황에서 벗어나 온라인에서의 학습 지원이 가능하므로 학습자의 개인차에 따른 수준별 학습을 관리하고 책임져야 하는 교사의 부담을 덜어준다.

• Journal of Korean Society of Archives and Records Management
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• v.8 no.1
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• pp.143-165
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• 2008

This study is concerned with educational services provided for archives with a focus on programs for teachers and students in the classroom. The purpose of this study is to develop the archival-resource based learning model. And the other purpose is to find out the influence of the archival-resource based learning. The researcher and teachers designed two lessen plans for archival-resource based learning and general learning. To compare with the archival-resource based learning and the general learning, the researcher divided into two comparison classes of 6th graders of two elementary schools. Statistical analysis was conducted by analysis of covariance using SPSS WIN 12.0 for t-test.

• Journal of The Korean Society of Inherited Metabolic disease
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• v.24 no.1
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• pp.10-16
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• 2024

Congenital Disorders of Glycosylation (CDG) represent a complex group of inherited metabolic disorders resulting from defects in multiple pathways of glycosylation, a critical biochemical process for protein functionality and cellular communication. This review provides a comprehensive overview of CDG, including its history, epidemiology, classification, diagnostic complexities, and therapeutic developments. Despite advancements in understanding CDG and identifying over 160 subtypes, challenges remain due to the diverse clinical manifestations and multi-systemic involvement. Targeted therapy is available for only a few CDGs, but promising treatments are being investigated. Ongoing research is vital to developing targeted treatments and improving patient outcomes.