• Journal of Elementary Mathematics Education in Korea
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• v.15 no.1
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• pp.121-139
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• 2011

This study conducted experimental problem posing activities using real-life materials. This study investigated the changes on students' mathematical thoughts and attitudes through the activities. This study is conducted via participation of students in a 5th grade class of N elementary school located in Daegu city. As a qualitative case study, this study focused on processes of problem posing rather than results. The problems applying new situations appear, and the used mathematical terms, units, and figures became more practical. The numbers of problems made are increased gradually, and more complex conditions are added as activities are performed. Most of the students revealed interests about problem making activities.

• School Mathematics
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• v.18 no.1
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• pp.215-229
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• 2016

This study aims to identify Archimedes' idea used while proving proposition 23 in 'Quadrature of the Parabola' and to provide an alternative way for finding the sum of geometric series without applying the concept of limit by extending the idea though metaphor. This metaphorical model is characterized as static and thus can be complimentary to the dynamic aspect of limit concept adopted in Korean high school mathematics textbooks. In addition, middle school students can understand $0.999{\cdots}=1$ with this model in a structural way differently from the operative one suggested in Korean middle school mathematics textbooks. In this respect, I argue that the metaphorical model can be an useful educational tool for Korean secondary students to overcome epistemological obstacles inherent in the concepts of infinity and limit by making it possible to transfer from geometrical context to algebraic context.

• The Journal of Korean Association of Computer Education
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• v.12 no.5
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• pp.35-47
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• 2009

Just as noted in some studies related to U-learning based on the ubiquitous technology, it is required to reflect both factors of the environments and contexts of learners on the teaching and learning strategy. For this, the current paper suggests an inquiry learning method and a mobile learning support device for the inquiry learning. Since the inquiry learning is operating on the basis of the contents that learners themselves experience in the fields, it naturally leads them to position in the learning environments and contexts. In this study some curricula are adopted and transformed for the inquiry learning, and the developed mobile device for the learning has a guide function, so that learners might follow the inquiry learning process. In addition, it is possible to reuse the acquired learning data by storing them on a remote learning sever, which may support the inquiry learning of students. These system and device are applied in the teaching sites of schools and, consequently, it is found that in regard with the learning interest and academic performance of students there is an advanced result, being statistically significant.

• Journal of Elementary Mathematics Education in Korea
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• v.17 no.3
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• pp.541-554
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• 2013

Recently, storytelling was emphasized in mathematics education for students to have interest in mathematics and active attitude about the mathematics. Storytelling can provide a meaningful mathematical context that motivates children to learning mathematics actively. And also, the power of storytelling for engaging children in mathematics learning was evident in the many research. According to this trend, the new mathematics textbook applying storytelling was developed. Already this textbook applying storytelling was used in grade 1-2 in 2013. Grade 3-4 will use this new textbook in 2014 and grade 5-6 will use new textbook in 2015. This study reviewed the mathematics educational meaning of storytelling and discussed the educational rationale of introducing the storytelling in mathematics education, and offered practical teaching method for applying storytelling in mathematics instruction.

• Convergence Security Journal
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• v.18 no.2
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• pp.59-67
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• 2018

The programming language is a core education area of software that is becoming increasingly important in the age of the fourth industrial revolution, but it requires mathematical knowledge and logical thinking skills, so that many local private university and college students with low basic skills are having difficulties learning it. This problem occasionally causes SW-major students to lose interest and confidence in their majors during the introductory course of programming languages; making them change their majors, or give up their studies. In this study, we designed an instructional model using Scratch for educating C-language which is a typical programming introductory language. To do this, we analyzed the concepts that can be trained by Scratch among the programming concepts supported by C-language, and developed the examples of Scratch for exercising the concepts. In addition, we designed an instructional model, by which the programming concepts are first learned through Scratch and then C-language is taught, and conducted an experiment on the SW-major freshman students of a local private university to verify the effectiveness of the model. In the situation where SW education is becoming common, we expect that this study will help programming language education of security IT students.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.2
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• pp.238-243
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• 2020

Although students can make their questions to clarify their curiosity, there are variety of reasons why a student cannot ask a lecturer. For example, they are ashamed to ask questions. In particular, in case of the class to attend many students, the situation for the difficulty of the question will be caused even greater. Recently, in order to overcome this problem, the Audience Presentation Program (APS) to share students' questions and comments have been introduced, it has widely used. The APS system enables students to ask questions more easily and comfortably. In this paper, we have analyzed the effect of the APS system on the basis of questionnaires in terms of easy-to-use, preference, engagement, etc. According to the results of this paper, we found that all students were satisfied with the APS system.

• 한국정보교육학회:학술대회논문집
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• 2021.08a
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• pp.303-308
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• 2021

In this study, we intended to present a class design plan that combines safety education and software education, which are very important in the school field, but are considered necessary for change. In order to realize safety education centered on indirect experience, the 12th class plan was devised as a "Smart Safety Commuter Road Production Project" using a physical computing tool called Bitbrick. Based on the 12th city's class plan, qualitative research was conducted with interviews with a total of five teachers, showing both the effectiveness and problems of applying them to the class. The effectiveness is that unlike conventional delivery-type safety education, indirect experience-oriented safety education centered on real-life situations is possible, and it can be expected that procedural thinking skills can be developed along with stimulating interest. However, the problem has been shown that the process of implementing the direct situation can be challenging and that even activities can be more efficient than group activities.

• Journal of Science Education
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• v.45 no.1
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• pp.55-68
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• 2021

The modern society is rapidly changing, and accordingly, the required teacher image is changing as well. Middle school students are immature, when they undergo major changes both physically and mentally, and teachers have a great influence. How students perceive the teacher determines the relationship between teachers and students. Therefore, it is necessary to analyze what kind of teacher image middle school students want. The purpose of this study is to analyze the image of a science teacher who prefers and avoids each class situation perceived by middle school students. To this end, 502 middle school students were divided into five classes: class type, class material presentation method, subject instruction method, subject content explanation method, and class atmosphere, and the image of science teacher who prefers and avoids is described in an open format. Concepts presented by middle school students were analyzed through semantic network analysis (SNA). The conclusions of this study are as follows: first, in order to make middle school students interested in science, an inquiry-centered experiment class should be conducted. Second, the change of class by science teacher can change it into preferred science class. Third, student-centered classes should be conducted according to the level so that students can understand. Finally, science teachers continue to strive through communication between science teachers and students, and students and students, and look forward to changes in science classes through this.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 1999.10a
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• pp.269-279
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• 1999

본 연구는 Web상에서 원격 협력 학습을 위한 수준별 학습자 모집 스케줄링 에이전트의 설계와 구현에 관해 제안한다. 본 시스템의 구조는 원격 교사 모듈과 여러 명의 학습자, 그리고 이를 연결해 주는 스케줄링 Agents, 학습자를 진단할 수 있는 진단 Agent로 구성된다. 컴퓨터가 분산환경으로 발전됨에 따라서 교육의 변화도 가속화되었고, 지식의 공유와 정보의 공유가 원격 협력학습에 의하여 절실히 필요하게 되었다. 원격 협력 학습에서의 학습자는 동일한 과목과 주제에 흥미를 느끼는 여러 명의 아동이 동시에 학습할 수 있는 상황이 필요하며, 선행 지식 또한 비슷한 수준이어야 동일한 주제로 학습의 효과가 있다. 이런 학습자를 판단하기 위해서 진단 Agent가 학습자를 진단하며 스케줄링 Agents의 학습자 지식에 추가한 후 스케줄링 Agents가 학습자의 기본 사항과 요구 내용을 추론하여 비슷한 수준의 학습자를 연결한다. 교사 모듈은 전통적인 ITS의 구조의 교수 학습 모듈, 전문가모듈로 구성되어 교수 학습을 할 수 있다. 이렇게 여러 명의 학습자를 연결하여 협력학습을 하기 위해서는 학습자간의 요구사항과 지식 수준 그리고 학습 가능한 시간이 같아야 하는데 이를 위해 시간을 자원으로 하는 동적 자원 스케줄링(Dynamic Resource Scheduling)으로 모델링 하였다. 본 연구에서 도형학습을 기반으로 하는 실험을 통해 구현한 원격 협력학습을 위한 지능형 스케줄링 에이전트를 평가하였다.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.63-68
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• 2006

본 논문은 옛 궁궐 또는 민속마을과 같이, 어떠한 사건 또는 상황과 관계 있는 문화관광지를 관광하는데 있어서 몰입적 체험관광 시스템이 갖는 효용성을 탐구한다. 현재까지 대부분의 국내 문화관광지는 정적이고 정보전달 중심인 고전적 관람 형태를 유지하고 있다. 이는 관광 형태가 새로운 경험을 추구하는 방향으로 변화하고 문화 관광산업의 규모와 중요성이 커져가는 추세에서 해결해야 할 과제로 부각되고 있다. 본 연구에서는 이를 개선하기 위한 일환으로 몰입적 체험관광 개념을 탐구하였다. 몰입적 체험관광이란, 유적지 및 사적지 유형의 관광지에서 관련된 실황을 마치 시간여행을 하듯 생생하게 체험하는 관광 방식을 의미한다. 본 개념을 실현하기 위해 증강현실 기술을 활용하였으며 문화관광지에 적용할 수 있는 시스템을 고안하였다. 이 시스템은 한 장소에 고정되는 포스트 형태로 시청각적 증강현실을 구현하여 몰입적 체험 관광을 제공한다. 실제 유적지에서 일반관람객들을 대상으로 시청각적 증강현실 체험을 실험한 결과, 흥미와 현장감이 향상됨과 동시에 컨텐츠에 대한 이해도 또한 향상되는 것을 확인할 수 있었다. 이러한 연구 과정을 통해 유적지 및 사적지 유형의 문화관광지에서 관광의 질을 높일 수 있는 몰입적 체험관광의 효과와 가능성을 확인할 수 있었다. 더 나아가, 본 연구는 기술의 새로운 적용 방법을 통해 새로운 경험을 창출하는 측면에서 의의를 갖는다.