• Journal of Fisheries and Marine Sciences Education
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• v.28 no.5
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• pp.1183-1197
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• 2016

The purpose of this study is to develop a Puzzle-Based Computer Science Instruction Model and Learning Program and to confirm the effects. To do so, we selected 2 classes with a similar level of pre-computational thinking in elementary schools in the Jeju Province. After that, from 2 classes, we designated the 5th grade students in 'D' elementary school as group A and designated students of the same grade in 'J' elementary school as group B. In a total of 28 sessions during an 18 week period, a Puzzle-Based Computer Science Learning Program was used with 31 students in group A, and the traditional computer science course was used with 25 students in group B. The results showed that there were significant improvements in computational thinking, which is computational cognition and its creativity, of the students in group A compared to students in group B. Also, this study proved that the Puzzle-Based program correlated with positive changes group A students' Science-Related Affective Domain. In this paper, on the basis of proven effectiveness, we introduce the Puzzle-Based Computer Science Instruction Model and Learning Program as an alternative to traditional, computer science education.

• Journal of Korean Elementary Science Education
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• v.19 no.2
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• pp.29-41
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• 2000

The purpose of this study is to examine the effects of the Portfolio applied science instruction on the students' scientific affective domain and perceptions of portfolio in elementary schools. Portfolio applied science instruction of the 6th grade science unit 'Environment pollution and Nature protection' was developed for this study. Traditional instruction was implemented to the control group and portfolio applied science instruction was implemented to the experimental group. Pretests of the scientific affective domain were administered to both groups. The treatment was given for about seven weeks for both groups. Instruments about scientific affective domain were administered to both groups. A questionnaire on perception of portfolio applied science instruction was given to the experimental group after the treatment. The results were analyzed using t-test on the students' scientific affective domain. The results of this study are as follows: 1. Portfolio applied science instruction program for elementary schools was developed. Students themselves determine the portfolio learning goal in a portfolio applied science instruction. Students construct the portfolio and they evaluate themselves and other colleagues. Also teachers go on portfolio applied science instruction considering portfolio purpose, concepts, evaluation. 2. There was not a statistically meaningful difference between an experimental group and a control group o]1 the students' scientific affective domain. In three sub categories of a scientific affective domain, the science perception, the interest on science and scientific attitude, there were not statistically meaningful difference among them. 3. As the results of the questionnaire on perceptions of portfolio, they didn't understand it very well but after learning portfolio, they showed positive attitude to perceptions of portfolio. Students in portfolio applied science instruction like more the portfolio applied science instruction than general instruction. 4. Portfolio applied science instruction has an useful value as a method of teaching and evaluation. Students and teachers can produce various portfolios products in portfolio applied science instruction. As a conclusion, portfolio applied science instruction was not statistically meaningful on the students' scientific affective domain, but it gives positive effects on perceptions of portfolio in elementary schools. Therefore, portfolio has an educational value as a method of teaching and evaluation for students' growth. In the future, teachers and students must have interaction and feedback in portfolio applied science instruction.

• Journal of The Korean Association For Science Education
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• v.17 no.3
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• pp.333-343
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• 1997

The purpose of the present study was to investigate an appropriate instructional model in order to remedy students' misconception. As hypotheses of this study, three instructional models, cognitive conflicting, hypothesis testing, and learning cycle models, on biological 'osmosis' concept were tested in 176 high school students. Results of the present study are as follows: 1. All groups used one of three instructional models showed a statistically significant improvement in conceptual change on the 'osmosis' concept between before and after the instruction. In addition, the three hypothesized instructional models were more effective in conceptual change than a traditional expository instruction. 2. There was a statistically significant difference among three experimental groups. Cognitive conflicting model and hypothesis testing model was more effective than learning cycle models. 3. An interviewing after instruction showed that students who had scientific concept on the 'osmosis' through the instruction could effectively apply the concept to other context more than students who had no scientific concept through instruction. The present study indicated that instructional model play an important role on students' conceptual change in science classroom. According to the result of this study, the instruction emphasizing students' active participation in class and scientific reasoning process is more appropriate to remedy misconception that the instruction using students' passive participation in class and expository teaching procedure. This study also indicated that students' concept acquired through instruction is one of important factors to apply it to other context.

• Journal of Fisheries and Marine Sciences Education
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• v.16 no.1
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• pp.35-49
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• 2004

The purpose of this study is to examine the effects of scaffolding instruction on motivated learning strategies and academic achievement. Subjects of this study were 96 middle school first grade students in Busan, who were randomly assigned to two experimental group and one control group. The one experimental group had received scaffolding instruction by teacher, and the other experimental group had received scaffolding instruction by the interaction of peers. Control group were given traditional lessons only by the method of lecture. Students were given English Academic Achievement Test, Motivated Strategies of Learning Questionnaire. T test and ANOVA were used to analyze date. The results of this study showed that scaffolding instruction by ZPD turned out to have a positive influence on motivated learning strategies and academic achievement.

• Journal of the Korean earth science society
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• v.25 no.2
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• pp.74-86
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• 2004

The effect of Web-based project learning on the science achievement and attitude of middle school students was investigated. Four classes of 9th grade at a coed middle school were divided into control and experimental groups. Web-based project instruction in which students utilized the Web to interactively carry out their projects was put into practice with the experimental group, while traditional instruction was employed with the control group. Pre- and post-test achievement and attitude scores were estimated through an analysis of covariance. Web-based project instruction was seen to be more effective in enhancing students’ science achievement and attitude than traditional instruction. In particular, the former instruction was most useful for improving higher level students’ achievement and attitude among the higher, middle, and lower level students of both groups, based on their academic achievement. The effect of Web-based project may result in eradicating negative cognition about gender difference.

• 대한공업교육학회지
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• v.32 no.1
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• pp.1-32
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• 2007

The purpose of this study was to verify that the practical skill instruction of the heat treatment and the tensile strength test using the problem-based learning is more effective than the traditional skill instruction in improving the key competencies. For the study, various literature researches were reviewed intensively about problem solving process, problem -based learning, and learning principals. The process of the practical skill instruction using the problem-based learning was composed with planning, executing, testing and evaluating. Based upon the conclusion of this study, the practical skill instruction using the problem-based learning was more effective than the traditional practical skill instruction of the heat treatment and the tensile strength test in improving the key competencies.

• Journal of agricultural medicine and community health
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• v.36 no.1
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• pp.13-24
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• 2011

Objectives: The purpose of this study is to compare educational effects between traditional classroom instruction and video self-instruction (VSI) for cardiopulmonary resuscitation (CPR) in boy's high school students. Methods: This study was carried out targeting totally 96 boy students(47 people for experimental group, 49 people for control group) in the second grade of high school where is located in G city of G province from July 9-10, 2009. The experimental group and control group were arbitrarily selected two classes in the second grade. One class was assigned to the experimental group. another class was assigned to the control group. The experimental group was educated with VSI for CPR. The control group was educated with traditional classroom instructions for CPR. The analysis was performed with SPSS WIN (version 12.0) program using frequency chi-square($x^2$) test, independent samples t-test, and paired t-test. Results: After instructions, the knowledge, attitude, self-confidence, and skill performance accuracy scores on CPR increased statistically in both group. The increases of self-confidence ($2.40{\pm}0.73$) and skill performance accuracy score ($2.67{\pm}0.29$) in the experiment group were significantly higher than those ($2.01{\pm}0.96$ and $2.54{\pm}0.31$) in the control group, respectively. Conclusion: This study suggested that VSI was more effective than traditional classroom education for self-confidence and skill-performance accuracy in CPR. To confirm it, more studies are warranted.

• Journal of Korean Elementary Science Education
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• v.21 no.1
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• pp.71-80
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• 2002

The purpose of this study was to develop children's creativity by applying creative problem solving model to elementary school science. Creative problem solving(CPS), the theoretical frame of model is proposed by Treffinger et al.(1994). CPS model is based on a substantial foundation of theory and research about creativity and problem solving. It is a well organized, deliberate set of methods you can call upon whenever you need new ideas or solutions and a process anyone can use to deal with many of life's everyday problems, opportunities, and challenges. CPS consists of three components. Within these three components, there are six specific stages during which creative and critical thinking abilities are used in harmony. Each stage involves both divergent and convergent thinking. The study was conducted for six week during the 1998 two semester in A elementary school which is located in Incheon. Eighty three 2nd grade students are selected for this study. The students were divided into two groups--experimental group and control group. The experimental group were taught in applying the CPS model, and the control group were taught by the traditional manner. Data for this study were collected by questionnaire which were developed by this researcher, and were analyzed by SPSSWIN 8.0. The results of this study were as follows: There was a significant difference on creativity between the instruction by applying CPS model and the traditional instruction. There was also gender differences on creativity between two groups. On fluency and flexibility as components of creativity, there was a signigicant difference between two groups. In conclusion, the instruction by applying CPS model was more effective in developing children's creativity than the traditional instruction.

• Journal of the Korea Society of Computer and Information
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• v.13 no.6
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• pp.33-39
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• 2008

Energy efficiency should be considered together with performance when designing embedded processors. This paper proposes a new energy-aware instruction cache design using backward branch information to reduce the energy consumption in an embedded processor, since instruction caches consume a significant fraction of the on-chip energy. Proposed instruction cache is composed of two caches: a large main instruction cache and a small loop instruction cache. Proposed technique enables the selective access between the main instruction cache and the loop instruction cache to reduce the number of accesses to the main instruction cache, leading to good energy efficiency. Analysis results show that the proposed instruction cache reduces the energy consumption by 20% on the average, compared to the traditional instruction cache.

• Journal of The Korean Association For Science Education
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• v.18 no.3
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• pp.303-312
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• 1998

In this study, the multimedia CAl program for chemical equilibrium in high school grade 3 was developed and the effect of CAl on achievement and attitude toward chemistry instruction and computer was investigated. Before instruction, the test of attitudes toward chemistry instruction and computer were administered, and the grade in the mid-term examination was obtained. These scores were used as covariates. Mid-term science score was used as blocking variable. For chemical equilibrium instruction, traditional and computer assisted instruction were used. After instruction, the achievement test and the test of attitudes toward science instruction and computer were administered. The results indicated that students in the treatment group achieved significantly better than those in the control group, but did not show improvement of attitude to chemistry instruction and computer compared to those in the control group. No significant interaction between the treatment and the level of students' prior achievement was found. Female achieved significantly better under CAl than under traditional instruction. In two subtests(understanding and application), treatment group achieved better in the subtest of application than control group. CAl had an effect on chemical equilibrium state (about reversibility) significantly. While female of the treatment group did not show more positive attitude toward both chemistry instruction and computer significantly than that of the control group, male showed more positive attitude significantly. Educational implications are discussed.