• Educational Technology International
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• v.15 no.2
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• pp.143-170
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• 2014

As it was argued that students' cognitive engagement can be, at least in part, modified by individual or learning environmental factors, prior studies have attempted to identify the factors explaining the variability of students' cognitive engagement. This literature review has shown that students' cognitive engagement can be altered by various elements in the learning environment design such as factors related students' perceptions of teaching quality, characteristics of tasks and learning activities, teachers' behaviors during instruction, classroom goal structures, the integration of student oriented learning, action learning, problem-based learning, and constructivist learning, and academic disciplines. Based on the review, this study suggests that more studies are required to focus on understandings how the integration of instructional design principles into courses and the levels of student cognitive engagement in these courses are related. Also, an investigation of direct and indirect effect of learning environments taking into account students' personal factors would provide a more accurate picture of the relationship between learning environmental factors and students' cognitive engagement.

• Journal of Science Education
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• v.40 no.2
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• pp.166-188
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• 2016

The purpose of this study was to analyze the utilization of history of science and STEAM and the elementary school teachers' perceptions about design-based STEAM instruction applying the history of science in science class. To research the utilization of the history of science and STEAM in elementary science class, educational value of design-based STEAM instruction applying the history of science, the questionnaire was revised based on research conducted by Lee & Shin(2014), Park et al.(2010), Shin & Han(2011) and developed questionnaire a total of 20 questions. It was administered to reply the questionnaire to 201 teachers of elementary school in D and G area. The results of this study were as follows: elementary school teachers did not teach actively the history of science, made it read students by simply introducing himself. They did not teach actively STEAM due to not enough time(busy to take a magnitude). They were difficult to teach, but the most focused on the 'Creative Problem-solving' process. And elementary school teachers perceived positively about the educational value of design-based STEAM instruction applying the history of science. Especially, they perceived that it can help elementary school students find a hint for solving the problem through examples of cases of scientific principles and a scientist. In conclusion, it implicates that it is need to regard elementary school teachers' perceptions on application of the history of science and STEAM, and develop specific design-based STEAM program applying the history of science in order to be applied successfully in elementary school for the STEAM settlement.

• Journal of Digital Convergence
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• v.16 no.5
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• pp.435-443
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• 2018

This study explores the effects of different Focus-on-Form Instruction (FFI) on improving learners' grammatical knowledge development and observes how the learners apply the knowledge to their output. A total of 112 college students were placed into three groups: 35 input-enhanced group students, who received visually enhanced input reading materials, 41 output-enhanced group students, performing dictogloss tasks, and 46 control group students given traditional grammar instruction. All the participant students took pre/post grammatical tests and completed pre/post writing tasks, which aimed to look into how the target grammatical structures were used in writing. The research findings indicated that both input-enhanced and output-enhanced FFI were effective on learners' language form learning and made contribution to their writing. Based on the findings, this study suggests that the elaborate design of combination of both FFI can maximize learners' language form learning.

• Journal of the Korean School Mathematics Society
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• v.20 no.4
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• pp.345-368
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• 2017

The purpose of this study is to investigate the educational significance of STEAM in school mathematics education by developing a STEAM program that learns mathematical and scientific principles based on patterns and analyzing the effects of developed program. For this purpose, we conducted an experimental class based on the STEAM program developed. STEAM attitude and satisfaction were tested for 120 elementary school students. The results of this study are as follows. First, in terms of STEAM attitude, STEAM-based experimental instruction did not differ significantly in the second grade students. However, there were positive effects in the other five grades. Second, in terms of satisfaction, the proportion of students who were 'generally' was 89%. the proportion of students who were 'not generally' was 3%. Study subject students were found to be generally satisfied with the STEAM-based instruction.

• Journal of The Korean Association of Information Education
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• v.9 no.2
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• pp.319-327
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• 2005

With the advent of computers and network, the Internet(World Wide Web) is becoming more prevalent than ever before. The ICT and the policy of the development of information technology are also applied to the elementary school environment. In the elementary school field, we can easily find that children have different web-site preferences based on gender. There is a lot of research about adult gender issues for the purpose of customer analysis to increase business profits. However, there is little research about the gender factor in web-based instruction or educational web sites. Elementary school children are beginning to experience the Internet. In this study, we consider the analysis of the use and perception of the Internet based on gender differences, and discuss concrete guidelines in regards to elementary school pupil and therefore create Web Based Instruction or Educational Web Contents.

• The KIPS Transactions:PartA
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• v.11A no.7 s.91
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• pp.489-498
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• 2004

VLIW processor is considered to be an appropriate processor for the embedded system, provided with high performance and low power con-sumption due to its simple hardware structure. Unfortunately, the VLIW processor often suffers from high memory access latency due to the variable length of I-packets, which consist of independent instructions to be issued in parallel. It is because of the variable I-packet length that some I-packets must be placed over two cache blocks, which are called straddle I-packets, so that two cache accesses are required to fetch such I-packets. In this paper, an expansion buffer cache is proposed to improve not only the instruction fetch bandwidth, but also the power consumption of the I-cache with moderate hardware cost. The expansion buffer cache has a small expansion buffer containing a fraction of a straddle packet along with the main cache to reduce the additional cache accesses due to the straddle I-packets. With a great reduction in the cache accesses due to the straddle packets, the expansion buffer cache can achieve $5{\~}9{\%}$improvement over the conventional I-caches in the $Delay{\cdot}Power{\cdot}Area$ metric.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.9A
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• pp.763-773
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• 2003

In this paper, we present a register renaming method for conditional execution out-of-order instruction issue microprocessors. Register renaming method reduces false data dependencies (write after read(WAR) and write after write(WAW)). To implement a conditional execution out-of-order instruction issue microprocessor using register renaming, we use a register file which includes both in-order state physical registers and look-ahead state physical registers to share all logical registers. And we design an in-order state indicator, a renaming state indicator, a physical register assigning indicator, a condition prediction buffer and a reorder buffer. As we utilize the above hardwares, we can do register renaming and trace the in-order state. In this paper, we present an improved register renaming method using smaller hardware resources than conventional register renaming method. And this method eliminates an associative lookup and provides a short recovery time.

• The Journal of Korean Association of Computer Education
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• v.17 no.6
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• pp.135-146
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• 2014

The study has compared the effects in SNS-utilized instruction that each of self centric activities and social interaction added social activities affected self initiative, attitudes and self efficacy to information technology respectively. The research methods utilized the pre experimental design as nonequivalent experimental group. The data was analyzed by paired t-test and content analysis. The results showed that the SNS class utilized self-centric activities were effective in self-initiative and attitudes toward information technology, while social interaction added social activities were effective in not only self-initiative and the attitudes of information technology but also self efficacy of information technology. And content analysis of the effects of the education showed that information sharing, instancy and accessibility were advantageous but information security and privacy issues were problematic. That is, it was confirmed that when self-centric activities and social interaction activities were practised simultaneously in SNS-utilized instruction, the self initiative which learners planed and executed by themselves, the attitudes and self efficacy of information technology which were able to enhance learning ability and to show satisfaction to individual learning were improved.

• Korean Journal of Child Studies
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• v.10 no.1
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• pp.1-10
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• 1989

This study compared the effects of open and directed teaching styles on creativity and mathematical achievement. The subjects were 32 three- and four-year-old children enrolled in the Home Economics Laboratory Nursery School at the University of Arkansas during the fall semester of 1987. In this study, the open teaching style was a child-oriented method of teaching with the help or guidance rather than the actual instruction of teacher, while the directed teaching style was a teacher-oriented method of teaching with actual instruction of the teacher. Forty-eight activities and materials relevant to mathematical concepts appropriately designed for the subjects were used. The nursery school children were divided into morning and afternoon groups. Utilizing a Latin square design, the children in the morning group were taught by the directed teaching style for four weeks followed by a three week period of no planned mathematical activities, then taught by the open teaching style for four weeks. The children in the afternoon group followed the same schedule except the open teaching style was first. At the end of the two four-week sessions of mathematics experiences Thinking Creatively in Action and Movement and selected items of Tests of Basic Experiences 2: Mathematics were administered. The scores of each of the two tests were analyzed using a t-test of dependent measures for the two teaching styles, the sex, and the age of the children. Children taught using the directed teaching style showed a significantly higher originality and mathematical achievement scores than those taught using the open teaching style. Differences for sex and age revealed that the directed teaching style was a significantly better method of instruction to foster the originality for boys and the mathematical achievement for four-year-old children.

• Journal of The Korean Association of Information Education
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• v.14 no.1
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• pp.99-110
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• 2010

In order to adapt learners' individual differences in learning ability, individual learning and level-learning have been recommended. However, instructing each student accordingly is not easy issue. In this paper, an online learning support system based on Keller's Personalized System of Instruction theory is developed. As a class-based system, it supports teachers and students to conveniently conduct frequent formative evaluations. It enables students to study at their own learning pace and to reach their learning goals. And it adopts point system and level system to induce self-directed participation. Our implementation results confirm teachers can conduct formative evaluations efficiently.