• Journal of Educational Research in Mathematics
• /
• v.11 no.1
• /
• pp.193-206
• /
• 2001

This study was designed to develop investigation- and exploration- activities on Euclidean geometry with an exploratory type software, Geometer's Sketchpad, and to gain insights into the geometric reasoning abilities of college students working with the software. A package of Euclidean geometric activities with GSP was developed and four college students worked on the several activities with GSP and their geometric reasoning process were analyzed. Results indicated that GSP helped students solve problems in the several ways: to make conjectures and discover theorems by providing precise construction and measurement; to discover their proofs by providing the visual images and its manipulation; and to make students easily apply "what-if"strategies and expand and deepen their activities. Students' geometric reasoning was highly depended on analytic methods and their abilities with synthetic methods were shown very limited.

• Journal of Educational Research in Mathematics
• /
• v.11 no.1
• /
• pp.223-238
• /
• 2001

Decimal fractions are the practical system of notations representing real numbers. The set of decimal fractions with the definition of comparison of decimal fractions and the identification of their double representations is essentially the field of real numbers. Therefore, we have to clarify the concept of decimal fractions. However, there are problematics that the aquisition of the concept of decimal fractions is not easy. In this paper, we attempt to eradicate the problematics relevant to the acquisition of decimal fractions discussed above and find the desirable direction of instruction of meaning for mathematical symbols: The case of decimal fractions. In J. Hiebert & decimal fractions. First of all, we clarify the essence of them - ratio, operator and linearity. And we compare and analyse the theories about decimal fractions of Resnick, Drexel, Brousseau and Hiebert and the contents of texts about decimal fractions in Korea. Finally, we suggest the efficient instruction methods which are faithful to the essence of decimal fractions and choose some methods among them to plan the classroom instruction and implement the methods in the classroom.

• Journal of Educational Research in Mathematics
• /
• v.11 no.1
• /
• pp.67-87
• /
• 2001

Variable concept plays a crucial role in understanding not only algebra itself but also school mathematics which is algebra-oriented. It solves as an essential means in applying mathematics to the real world because il enables us to describe varying phenomena in the real world. In this study, we examined some matters related to the learning of variable concept in school mathematics. In Particular, we discussed on the teaching of variable concept in the [7-first] stage of the 7th Mathematics Curriculum. We analysed the textbooks in the [7-first] stage and attempted to explain concretely the contents and teaching methods of variable concept which be taught in school mathematics. After reconsidering the practices on variable concept teaching, we pointed out the problems of formalistic teaching method and then proposed the direction in which variable concept teaching should go.

• Mycobiology
• /
• v.43 no.2
• /
• pp.157-162
• /
• 2015

Lichen-forming fungal proteins have been seldom searched due to many difficulties in their extraction. Phenols, quinones, proteases, and other components released during cell disruption have been known to be the greatest challenges related to protein extraction from lichens. To overcome these problems and maintain good electrophoretic resolution and high protein concentration, an extraction buffer containing polyvinylpolypyrrolidone, ascorbic acid, Triton X-100, polyethylene glycol, proteinase, and oxidase inhibitors in sodium phosphate buffer was developed. This extraction buffer showed high efficiency for all lichen species tested in the study.

• Research in Mathematical Education
• /
• v.8 no.3
• /
• pp.157-173
• /
• 2004

The paper discusses the phenomenon of mathematical giftedness, especially manifested at early stages of life of future outstanding mathematicians, taken in its socio-cultural context. The authors suggest that the images of mathematical giftedness are formed differently in various cultural contexts and thus can imply different settings of the educational institutions that can accordingly ignore, encourage, or restrain the students considered gifted. The paper focuses on the cases of traditional mathematics in several Asian countries (China, Vietnam, and Japan) and of modem mathematics in Soviet Union/Russia in order to provide examples of different patterns of forming the image of mathematical giftedness and of the corresponding educational approaches.

• Journal of the Korean Institute of Educational Facilities
• /
• v.8 no.3
• /
• pp.15-23
• /
• 2001

The purpose of this study is to provide some architectural characteristics of recycled school facilities. To achieve this purpose literature review and case study are performed. In the case study total 207 recycled school facilities located within Kyungsangpookdo Province were analyzed in terms of its gross building area, size of the site, and new uses. Results of the analyses about the data show that there is a significant correlation between adapted use and size of the site and conditions of the adapted uses are influenced by the size of the site and gross building areas. In addition, this study finds that in case of extensions 53% of the total cases are used for training facilities. Finally, this study shows future research direction for achieving better decision in recycling closed school facilities.

• Journal of Korea Society of Industrial Information Systems
• /
• v.10 no.4
• /
• pp.90-96
• /
• 2005

This paper develops a multi-casting system could be used in a school and hospital and government and municipal public offices. The developed multi-casting system uses various educational multimedia titles effectively and is capable of remote control by using a network(LAN). The developed system includes speaker control module that make individual or group broadcasting, AV contents control module for using a diverse educational multimedia title effectively and light control module. The system uses RS-485C communication module and the effective control system interface based on GUI.

• Journal of Gifted/Talented Education
• /
• v.9 no.2
• /
• pp.73-101
• /
• 1999

The purpose of this study was to suggest an advanced system for educating scientifically gifted children in the Center for Science Talented Education at Kyungpook National University. Several suggestions based on analysis of current identifying-process and instructional materials for scientifically gifted children were provided for advancing the educational system of the center. First, this study suggested a three-step procedure to identify procedure emphasized students reasoning skills as one of important characteristics of the gifted child. Second, this study provided an instructional model for developing hypothesis testing skills in scientifically gifted children. The model was originally based on Lawson's scientific reasoning processes and learning cycle mode. Third, this study also suggested an effective administration system of the Center for Science Talented Education. Further, this study suggested effective ways on research works for advancing the center, educating instructors, the cyber center for remote education, and international co-works for developing the gifted children's potential abilities.

• Journal of the Korean Institute of Educational Facilities
• /
• v.18 no.6
• /
• pp.15-23
• /
• 2011

There are growing concerns about designing classroom or school environments influencing teaching and learning activities. However, there are little research on how students perceive the physical characteristic of the classroom and whether physical factors of classroom affects students' learning. The purpose of this study aims to reveal the different perception of college students on their classroom environments depending on where they take class, traditional classroom or newly constructed classroom. Also, the study demonstrates how the difference of classroom environment affects students' learning outcome. The results of this study suggests that classroom should be designed considering the perceptions of the students and their teaching and learning activities.

• Journal of the Korean Institute of Educational Facilities
• /
• v.17 no.6
• /
• pp.13-22
• /
• 2010

This study aims to propose design directions for the eco-friendly, sustainable underground campus in terms of integrated design. For this purpose, theoretical investigation, design methodology and quality investigation, analytical case studies on the domestic and foreign underground campus, and user survey for POE(Post Occupancy Evaluation) and analysis on the recently built domestic underground campus plans were conducted. As a conclusion, design direction and improvement areas for the synthesized sustainable underground campus plan were proposed. Underground campus plan will be a great alternative for a 21st century sustainable campus if well-developed plans with organized design guidelines are established.