• 수산해양교육연구
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• 제28권1호
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• pp.91-105
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• 2016

The purpose of this study was to examine the awareness of elementary teachers about educational technology. Educational technology that is embodied at school was the form of "systemic structure" whose components are complex and exert close mutual influence on one another, rather than of "systemic assembly" that relationship of components were well controlled. A qualitative epistemological method was used to look into educational technology instead of existing empirical ones. Metaphor analysis was utilized among various qualitative research methods to find out what elementary teachers thought of educational technology. Six elementary teachers were asked to draw a picture to describe what came into their mind when they heard term of "educational technology," and they were interviewed in depth to check what their pictures meant. As a result, elementary teachers expressed their point of views about educational technology as "a scientific, technical and systemized instrument to stir up the learning interest and joy of students," "an action to mechanically fit together every part of education(curriculum)," "educational technology as a teaching and learning method," and "an integrated and overall system." This finding seemed to have something to do with media theory, teaching and learning theory and system theory that have been used in educational technology. This study was expected to be significance in that it investigated the way of looking at educational technology in the field, and confirmed the close relationship between theory and practice, and finally provided an opportunity to reflect on the ontological nature and epistemological method of educational technology.

• 운동영양학회지
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• 제13권2호
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• pp.115-122
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• 2009

Intracerebral hemorrhage (ICH) is a common cause of stroke, and it occurs mainly in the striatum, thalamus, cerebellum, and pons. Physical exercise is known to ameliorate neurologic impairment induced by various brain insults. In the present study, the influence of pre-and post-conditioning of treadmill exercise on spatial learning ability, the lesion volume, and apoptotic neuronal cell death in the striatum following ICH in rats was investigated. ICH in the striatum was induced by injection of collagenase using strereotaxic instrument. The rats in the pre-exercise group were scheduled to run on a treadmill before ICH induction for 2 consecutive weeks. The rats in the post-exercise group were scheduled to run on a treadmill after ICH induction for 2 weeks. The rats in the pre-exercise and post-exercise group were scheduled to run on a preconditioning treadmill exercise 2 weeks before ICH induction until postconditioning treadmill exercise 2 weeks after ICH induction, except the day of surgery. For this study, radial arm maze task, Nissl staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay, and immunohistochemistry for caspase-3 were performed. Our date showed that treadmill exercise suppressed the ICH-induced apoptotic neuronal cell death and decreased lesion volume in the stratum. Treadmill exercise also alleviated the ICH-induced impairment of spatial learning ability. Preconditioning treadmill exercise before the ICH insult and postconditioning treadmill exercise after the ICH insult showed similar effectiveness on the recovery of ICH. In this study, however, preconditioning exercise before the ICH insult and postconditioning exercise after the ICH insult showed the most potent effectiveness on the recovery of ICH.

• 아동학회지
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• 제29권1호
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• pp.275-292
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• 2008

This study investigated the effects of a teaching process using dynamic assessment for a unit on young children's measurement ability. Subjects were 45 5-year-old children in a kindergarten in Busan. The instrument was the Dynamic Assessment Tools for Young Children's Measurement Ability (Hwang & Ko, 2(07). Assessment consisted of four steps: pre-test, learning, transfer, post-test. Results were that at post-test, there were significant differences in scores of measurement ability between the dynamic assessment and control groups. In the dynamic assessment group there was significant improvement in length, width and weight between pre- and post-tests and there were significant shifts of measurement strategies and measurement errors between the pre- and post-tests.

• 한국초등과학교육학회지:초등과학교육
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• 제20권1호
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• pp.1-7
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• 2001

The purpose of this study is to examine the learner's variables affecting on scientific thinking and scientific process skills. To study this purpose, through the procedure study, the learner's variables were divided into cognitive variable, ego variable, and affective variable, then the questionaire survey through the reconstruction of standardization instrument was made over 120 elementary school fifth grade student in Seoul, Anyang, and Pajoo. The results of this study were as follows: 1) The learner's variables affecting on scientific thinking were cognitive variable and for female students, also affect affective variable. The subordinated catagories of statistically significant degree of explanation were achievement motivation, cognitive level, and cognitive style and another statistically significant correlation were meta-cognition, self regulated learning, self efficacy, and muliple intelligence. 2) The learner's variables affecting on science process skills were cognitive variable and affective variable. And the subordinated catagories of statistically significant degree of explanation were achievement motivation, and cognitive level. And another statistically significant correlation were meta-cognition, self regulated loaming, self efficacy, multiple intelligence, and attribution.

• 한국콘텐츠학회논문지
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• 제2권1호
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• pp.1-6
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• 2002

컴퓨터의 급속한 보급과 인터넷을 기반으로 웹 서비스가 날로 향상되고 있으며, 웹을 활용한 사이버학습은 웹의 등장과 함께 인터넷의 가장 중요한 교수도구로 자리잡고 일다. 본 연구에서는 수리영역의 특성 학습과 웹에서 구축된 서버와 클라이언트 환경을 통하여 학습 부진아의 학업 성취도를 높이기 위하여 사이버 학습 시스템을 설계 및 구현하였으며, 학습자가 웹 데이터베이스 시스템 환경과 멀티미디어를 활용하여 추상적인 개념보다 직접 참여하는 학습이 되도록 하였다.

• 아동학회지
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• 제22권1호
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• pp.135-146
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• 2001

The present study investigated socio-organizational variables which influence teachers' commitment to the organization. Subjects were 254 teachers of private kindergartens in Kimhae, Kyungnam-do, and Tongrae-gu and Kangseo-gu in Pusan. The instrument was a questionnaire developed by Rosenholtz(1991), originally developed for the study of the teachers' work place (the social organization of elementary schools) and revised here for Korean early education. The data were analyzed by ANCOVA. Results revealed that the most important variable influencing teachers' organizational commitment is teachers' job certainty, next is teachers' learning opportunities; other variables are teachers' career, psychological rewards, and task autonomy and discretion.

• 한국과학교육학회지
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• 제20권2호
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• pp.193-199
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• 2000

The textbook is a predominant feature of most classrooms. Because the textbook is an important aspect of educational experience, it is essential that the content of the texts be carefully scrutinized. The purpose of this study was to examine the visual portrayal of gender groups in elementary $"Chay{\tilde{o}}n"$ textbooks developed by the 6th National Science Curriculum. An instrument was developed to analyze the nature and type of activity engaged in by these groups as well as how often members of these groups were portrayed. Data were collected from 8 elementary $"Chay{\tilde{o}}n"$ textbooks. The results show the following two different features. While the elementary $"Chay{\tilde{o}}n"$ textbooks do not show gender-biases in representing science learning activities such as observing, experimenting, measuring, they show distinct gender-stereotyped roles and activities. It is expected that the results of this study are considered in developing the new elementary "Science" textbooks which show gender-fairness.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제17권4호
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• pp.243-266
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• 2013

Accompanied with ongoing calls for reform in statistics curriculum, mathematics and statistics teachers purposefully have been reconsidering the curriculum and the content taught in statistics classes. Changes made are centered around statistical inference since teachers recognize that students struggle with understanding the ideas and concepts used in statistical reasoning. Despite the efforts to change the curriculum, studies are sparse on the topic of characterizing student learning and understanding of statistical inference. Moreover, there are no tools to evaluate students' statistical reasoning in a coherent way. In response to the need for a research instrument, in a series of research study, the researcher developed a reliable and valid measure to assess students' inferential reasoning in statistics (IRS). This paper describes processes of test blueprint development that has been conducted from review of the literature and expert reviews.

• 한국환경교육학회지:환경교육
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• 제20권3호
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• pp.102-112
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• 2007

The purpose of this study is to examine the environmental worldviews of middle school students. An instrument to survey environmental worldviews consists two components; 'Human and Environment', and 'Human Behaviors and Environmental Problems' The two components are three environmental worldviews as follows: 'Technocentrism', 'Ecocentrism', 'and Environmentally Sound and Sustainable Development(ESSD)'Subjects were 551 middle school students in metropolitan area and rural district(male: 285, female: 266). Most of middle school students had the environmental worldview of the ESSD. More female students had a tendency ESSD worldview than males. More male students had the positive Technocentrism than females. More middle school students in metropolitan area had ecocentrism than those in rural district. Understandings of students' environmental worldviews will be helpful to work out teaching and learning strategies in environmental education.

• 한국응용과학기술학회지
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• 제25권4호
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• pp.438-445
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• 2008

For recipe prediction of colorant proportion showing nonlinear behavior, we modeled the effects of colorant proportion of basic colors on the target colors and predicted colorant proportion necessary for making target colors. First, colorant proportion of basic colors and color information indicated by the instrument was applied by a linear model and a multi-layer perceptrons model with back-propagation learning method. However, satisfactory results were not obtained because of nonlinear property of colors. Thus, in this study the neuro-fuzzy model with merit of artificial neural networks and fuzzy systems was presented. The proposed model was trained with test data and colorant proportion was predicted. The effectiveness of the proposed model was verified by evaluation of color difference(${\Delta}E$).