• Journal of The Korean Association For Science Education
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• v.28 no.8
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• pp.922-936
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• 2008

The purpose of this study was to investigate the effects of the Science Writing Heuristic (SWH) teaching strategy on cognitive levels, science concept understanding, argumentation and writing skills. 131 students attending to co-ed middle school were selected for the study and assigned to the experimental and comparative group. The teaching strategy using SWH was applied to the experimental group, while the traditional one led by teacher's lecturing was applied to the comparative group. The cognitive level test (SRT II) and baseline test were administered before the instruction period. The summary writing test and SRT II test were administered after instruction. The results showed that there was a significant difference between two groups in cognitive levels and science concept understanding, whole argumentation and writing skills. However, there was no significant difference in some argumentation components, including warrant, backing, qualifier, rebuttal, metacongnitive question. The results of this study showed the possibility of implementation of SWH in science classroom teaching.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.05a
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• pp.736-741
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• 2004

In high-capacity disk drives with ever-growing track density, the allowable level of position error signal (PES) is becoming smaller and smaller. In order to achieve the high TPI disk drive, it is necessary to improve the writing accuracy during the STW(servo track writing) process through the reduction of TMR sources. Among the main contributors of the NRRO(Non-Repeatable Run-out) PES, the disk vibration and the HSA(head-stack assembly) vibration is considered to be one of the most significant factors. Also the most contributors of RRO(Repeatable Run- out) come from the contributors of NRRO which is written-in at the time of STW(servo track writing) process. In this paper, the experimental test result shows that the effect of NRRO on servo written-in RRO effectively can be reduced through a STW process under low dense medium condition such as semi-vacuum.

• Journal of Korea Multimedia Society
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• v.21 no.9
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• pp.1119-1130
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• 2018

Writing letters or patterns on a virtual space by moving a person's gaze is called "eye writing," which is a promising tool for various human-computer interface applications. This paper investigates the use of conventional eye writing recognition algorithms for the purpose of user-independent recognition of eye-written characters. Two algorithms are presented to build the user-independent system: eye-written region extraction using wavelet coefficients and template generation. The experimental results of the proposed system demonstrated that with dynamic positional warping, an F1 score of 79.61% was achieved for 12 eye-written patterns, thereby indicating the possibility of user-independent use of eye writing.

• Journal of Elementary Mathematics Education in Korea
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• v.23 no.3
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• pp.347-363
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• 2019

The purpose of this study was to investigate the effects of communication - oriented mathematical writing strategies on students' mathematics achievement and mathematical propensity. In order to achieve the purpose, three types of communicative math writing learning strategies such as writing their own thoughts and feelings, writing problem solving process, and explaining the mathematical concepts. In the comparative group, general lessons based on textbooks and tutorials were conducted. As the results, the students in the experimental group showed a significant improvement in mathematics achievement and a positive effect on the mathematical propensity as compared with the comparison group.

• Journal of Korean Elementary Science Education
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• v.38 no.3
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• pp.387-394
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• 2019

The purpose of this study was to investigate the effects of writing science diary on science learning motivation, science academic achievement and ecological sensitivity of elementary students. Teaching unit was focused on 'The structure and function of plants' in 6th grade science text book. The subjects of study were 51 students of two classes. One class of 25 students, experimental group, wrote science diaries as homework. While the other class of 26 students, comparative group, performed homeworks with fill-in-the-blank worksheets. The results of this study can be summarized as follows: First, writing science diary had a meaningful effect on improvement of science learning motivation. Second, writing science diary had a meaningful effect on improvement of science academic achievement. Third, writing science diary had a meaningful effect on improvement of ecological sensitivity. And we could find that students had a favorable impression and high satisfaction level about writing science diary from the questionnaire.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.393-402
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• 2014

This study aims to testify the effect of reading and writing abilities improvement program for elementary school children from multicultural families. Methods: The research design used in this study was a non-equivalent control group pretest-posttest research design. The participants were divided into two groups, an experimental group(n=9) and a control group(n=8). Data were analysed by using Mann-Whinety U test, Wilcoxon Signed Ranks, Cohen's d with SPSS(PASW)18.0 program. Result: Significant differences were found in scores for reading ability (z=-2.668, p=.008, ES(d)=0.6) and writing ability (z=-2.670, p=.008, ES(d)=0.5) in experimental group. Conclusion: The results indicate that the reading and writing abilities improvement program should be used with elementary school children of multicultural families to help them and to improve their reading and writing abilities.

• Journal of the Korean Chemical Society
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• v.58 no.6
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• pp.649-657
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• 2014

The purpose of this study was to develop a teaching strategy focused on science writing and to investigate its effects on enhancing students' problem solving ability. A teaching strategy using science writing enhancing problem solving ability (REWS model) was designed. The REWE model consisted of four stages: 1) Sensing and Stating of Scientific Problem by Reading (R stage), 2) Exploring Problem (E stage) 3) Explaining by Writing (W stage), 4) Integrated problem-solving (S stage). 135 10th grade of students were assigned to one experimental group and one control group. Students in the experiment group were taught by REWE model. Students in control group were taught by traditional lecture-based instructions. The program was implemented over a semester. The results indicated that the experimental group presented statistically meaningful improvement in critical thinking necessary to solve problems (p<.05). This study suggests that science writing can be effective for improvement of problem solving ability.

• Journal of Elementary Mathematics Education in Korea
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• v.12 no.2
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• pp.165-183
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• 2008

This study is to help to understand the influence of exchange writing activity in the elementary mathematics on students' mathematical communication skill. Various technical activities had been implemented during the classes and the ideas from those activities had been interpreted into writings in the final stage of the classes. Those writings, then, were distributed to other students or teachers in order to devise a teaching model for exchange writing, which is to be applied to the 3rd grade classes and to identify the influence on the in mathematical communication skill. From this study, we could get such conclusions as follows: First, there was considerable difference between experimental group practicing exchange writing and control group engaging in normal learning activities in the progress of their mathematical communication skill (group discussion), writing skill and expressivity when examining their average communication skill using t-method. Similar trend had been witnessed when self-evaluating their mathematical communication skill. Second, when it comes to the mathematical tendency, experimental group showed a higher tendency in positiveness compared to the control group. Therefore, we might conclude that the exchange writing has a positive influence on the students' mathematical tendency, especially on their curiosity or interest in teaming, willingness to study and their comprehension of its importance.

• Journal of Environmental Science International
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• v.19 no.1
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• pp.69-80
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• 2010

Today's fundamental purpose of environmental education is to fulfill people's desire of living in a pleasant environment and at the same time promoting individualistic and collective environmentally friendly behaviors. In order to achieve these purposes, it is very important that each person holds an environmentally friendly mind that constantly tries to preserve and protect the environment which should be acquired through experiencing the importance of the environment. In order to increases the sense of attachment of people and the natural environment, the direction of environmental education should carry out education on environment related knowledge and the condition of environment damage side by side. The direction of environmental education should consider the cultivating student's awareness for active participation on matters related to the environment and to change their behaviors towards the environment. This study has tested the effect of reflective writing activities about the environment on the environmental sensitivity and willingness to act of 5th grade primary school students. For the sole purpose of this study, 70 students out of 141 5th graders of M Primary School were divided as the experimental group, and another 71 students were divided as the control group. The experimental group participated in 10 activities in where they were asked to express their thoughts and feelings in writing regarding 10 environmental problems occurring near the M Primary School. The control group participated in 10 environmental education lectures focusing on the lecturer. The results were as following. First, the reflective writing activities about the environment were effective in the environmental sensitivity of primary school students. Second, the reflective writing activities about the environment can affect the environmental willingness to act of primary school students. Third, there was a statistically significant correlation between environmental sensitivity and environmental willingness to act.

• Journal of the Korean Society of Earth Science Education
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• v.10 no.3
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• pp.278-289
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• 2017

The purpose of this study is to investigate the effect of science writing heuristic class on 'seasonal change' on elementary school students' science learning motivation and scientific attitude. In order to carry out this study, 49 students from 6 grade of elementary school in P metropolitan city were selected and 24 students in one class were selected as experimental group and 25 students in the other class were selected as the comparative group. The experimental group was taught science writing heuristic in 10 times classes related to the 'seasonal change' and the general classes related to the 'seasonal change' were conducted in the comparative group. Based on the results of this study, the conclusions are as follows. First, the science writing heuristic class about 'seasonal change' showed a significant effect on elementary school students' science learning motivation for science class. This is analyzed as a result of the students being more familiar with their science class through science writing heuristic class. Second, the science writing heuristic class about 'seasonal changes' showed a significant effect on elementary school students' scientific attitude. This is because the science writing heuristic class offered elementary school students an opportunity to combine their experiences in daily life with the contents of the class. Third, students' participation, satisfaction, and interest in the science writing heuristic class applied in this study were high. Therefore, it seems to be effective if the science writing heuristic class is used for science class for elementary school students.