• Journal of the Korean School Mathematics Society
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• v.9 no.4
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• pp.521-538
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• 2006

The purpose of this study is to examine the effect of teaching mathematical proofs that made use of the 'proof assisted cards' at the second year of middle school and to investigate students' ability to geometric proofs as well as changes of mathematical attitudes toward geometric proofs. The subjects are seven students at the 2nd year of D Middle School in Daegu who made use of the 'proof assisted cards' during five class periods. The researcher interviewed the students to investigate learning questions made by students as well as the 'proof assisted cards' before and after use. The findings are as follows: first, the students made change of geometric proof ability by proof activity with the 'proof assisted cards' and second, the students made significant change of mathematical attitudes toward geometric proofs by proof activity using the cards.

• Journal of the Korean Institute of Intelligent Systems
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• v.12 no.2
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• pp.151-156
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• 2002

There are two methods in evaluation student s achievement. The two evaluation methods are absolute evaluation and relative evaluation. They have much advantages respectively, but also have some limitations such as being too stereotyped or causing overcompetition among learners. This paper suggests a new evaluation method which evaluates student s achievements by considering the score distribution and the frequency The proposed method classifies the scores into several clusters considering the goodness. This approach calculates the goodness by applying the RE(relaxation error), and grades the achievement scores based on the goodness. The suggested method can avoid the problem of grading caused by the narrow gap of scores because it sets a standard for grading by the calculated goodness considering the score distribution and frequency of occurrence. The method can differentiate achievements of a school from those of others, and that it is useful for selecting advanced students and dull ones, and for evaluation of classes based on student s achievement.

• Journal of The Korean Association For Science Education
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• v.22 no.1
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• pp.32-39
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• 2002

Three conjectures as the criteria for developing differentiated science learning program for gifted elementary students were derived from the previous research report: 1) The students' reasons why certain educational programs were thought to be interesting or profitable could be classified into the 3 criteria; novelty, curiosity, participation. 2) Students used to think that the programs were interesting if at least anyone of the above 3 criteria is fulfilled. 3) They think, especially, that the programs were profitable if the curiosity criterion is satisfied. To check these conjectures, 47 students were investigated with a Likert type questionnair asking how much the given program is interesting and profitable to themselves after they finished a set of programs for gifted students.

• Journal of Korean Elementary Science Education
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• v.21 no.1
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• pp.111-125
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• 2002

The aim of this study is to make it sure how pupils' science inquiry skills and attitude are influenced when they are taught by using the work-sheets for the differentiated learning according to their ability. In order to accomplish this aim, two classes of the fourth grade in the elementary school were distinguished into two groups: one was the experimental class and the other, the comparative class. The experimental class was given 52 hours of science lessons using the above sheets, and the comparative class, the general method of teaching. In order to compare their scientific interest and learning ability of the two groups each other, pupils were tested the standardized achievement in advance. The two groups were also given "ex post facto test" to measure the variation of their inquiry skills and attitude after the lessons. In addition, the experimental class was tested to measure their learning attitude after they are teamed the science with the sheets. The results of this study are as follows: 1. According to the percentile statistics of the science inquiry skills test between the two groups, the work-sheets for the differentiated teaming helped pupils develope their inquiry skills remarkably. 2. The work-sheets did not lead to significant difference between the learning ability of boys and girls. 3. The science lesson using the work-sheets showed positive influences in increasing pupils' scientific attitude. 4. About 77.2 percent of pupils accepted the excellent records of the evaluation in the science lesson using the sheets. It can be, therefore, concluded that the science lesson using the work-sheets for differentiated teaming is one of effective science lessons to increasing pupils' science inquiry skills, compared with the general teaching method.

• Journal of the Korea Computer Industry Society
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• v.4 no.4
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• pp.467-478
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• 2003

The purpose of this paper is to develop and to introduce the rubrics for performance assessment, which can measure elementary school upper graders' ability to use ICT, With a goal of improving their ability to use ICT, the students, who are in the fourth, fifth, six grades, received instructions on the basic skills and knowledge for using the computer during the extracurricular-activity session or the self-directed session after regular classes. In the study, the rubrics were developed on the basis of the 7th national curriculum, and defined respectively assessment criteria and attainment targets for the upper graders. The assessment criteria were set after the researcher determined the most basic and important skills and knowledge that the upper graders should have, and then compared them with the attainment criteria in the national curriculum. Accordingly, the application of the rubrics developed for this study is expected to lessen the burden of elementary school teachers when they implement performance assessment in their classrooms. Finally, using the rubrics, the study assessed elementary school students' ability to use the computer, and showed somewhat limiting but satisfactory results.

• Journal of the Korea Computer Industry Society
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• v.2 no.3
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• pp.341-356
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• 2001

In this study, we develope a WBI(Web Base Instruction) program to do the student oriented learning using WWW and analyze the result. The 127 students who took part in the experiment were divided into two groups, an experimental group of 85 subjects and a comparative group of 42 subjects. This experiment was performed for four periods, and a formative test was conducted to measure achievement for two groups. The average and the standard deviation of scores for the experimental group are 84.9 and 16.82 respectively, and the comparative group 77.5 and 14.39. Experimental results shows that the academic achievement for the experimental group is more significant than that of the comparative group at the 0.0024(P$\le$0.05)of the result "t-test" under the 91~95$\%$ confidence interval of the level of significance. This fact says that practicing the WBI programming has an effect on the improvement of the students' academic achievement.hievement.

• The Journal of the Korea Contents Association
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• v.6 no.2
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• pp.146-153
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• 2006

The purpose of this study is to research the process of Korean students' acquiring the indefinite article. To research this , we will propose two subjects of study as below. The first subject is that we will examine whether there will be any differences of the acquisition in the indefinite article between gender, male and female. The second subject is that we will examine whether there are any differences of the acquisition by the degree of proficiency at English. The subject of a sample survey was 115 female and 80 male students, total 195 students, who take English courses as a required subject at 'C' university in Gwangju. The necessary data for this study was obtained by the Questionnaires with 19 questions about the indefinite article. The data analyzing method was ANOVA(analysis of variance between groups) through the statistics program SPSS 12.0. As a consequences of this study we found that the side of the acquisition in the indefinite article between gender, male and female is closely related in the data result of the questions and the side of the acquisition by the level of proficiency at English has the meaningful data result of 14 questions at the questionaries.

• The Journal of Korean Association of Computer Education
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• v.12 no.3
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• pp.31-40
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• 2009

English education taken with native English speakers is very effective, but it is hard to obtain English education with native English speakers in rural schools. In this study, therefore, we supported English education with on-line content and video conferencing with native English speakers. This study worked with one hundred fifty students from six elementary and middle schools equally distributed by city size over three months. This study performed experimental research by T-test comparing of pre- and post-tests of the hybrid model. In our results, the upper group showed greater improvement in understanding while the lower group showed more improvement in writing. In addition, the lower group showed more improvement than the upper group in overall English accomplishment.

• Journal of the Korean School Mathematics Society
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• v.4 no.1
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• pp.91-101
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• 2001

Nowadays the number of students that is losing their interest as well as learning desire in mathematics is increasing because of lack of logical thought creative power and abstract expression that present-day mathematics requires by reason of discrepancy of extreme scholastic ability by speciality of mathematics. In these conditions, we reduce the number of learning depression by bringing about learning desire or learning interest on mathematics, and students learn effective learning methods to be voluntary learning of discovery themselves that studies basic concepts, principles, rules through logical thought of students to solve difference of scholastic ability, thus we assumed that debate studies through small group activities in ability group would be one of ways to improve learning power, so the results of our research are as follows; 1. Debate studies through small group activities were very effective because of reinforcing the achivement level of students. 2. By this learning method, an individual or cooperrative learning was fostered, and lively discussions were accomplished. And learning attitudes of students were changed by the extension of cooperative learning abilities through advices or by themselves. 3. A personal opinion is payed regard by accepting an individual idea in the process of making questions. Learners can correct wrong concepts in the process of correcting wrong answers. So if we apply above-mentioned studies with easy contents from the lower grades, the effectiveness would increase as learners go to the higher grade. According to the results of various researches as follows; "The teaching-learning method oriented coopperative debate studies is effective to find solutions to mathematical problems." If small group activities are applied in the educational situation to search the course of a desirable cooperation learning through small group activities to improve scholastic abilities for a discoverable problem-solving power. I think that the teaching-learning method oriented cooperative debate studies is one of the most desirable methods to increase the problem-solving ability.

• Journal of Fisheries and Marine Sciences Education
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• v.24 no.1
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• pp.56-78
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• 2012

This study which is an alternative exploration for improving the quality level of instruction considering the perception of the teachers in early childhood education field on instructional design is to develop Differentiated Instructional Design Model coincides with the purpose of differentiated instruction curricula and with instructional design principles, and to find out whether the model has significant effect on development of teacher's professionalism. With these purposes, the perception of 343 teachers from early childhood education institutions are investigated, and after component variables are set by drawing the instructional design model available in early childhood education field and reviewing the literature of differentiated instruction model, the Differentiated Instructional design Model for Early Childhood are developed based on FGI(Focus Group Interview) expert evaluation. The experimental study of 88 teachers working in childcare facilities was implemented for effectiveness verification. As a result, first, most teachers consider the priority on making the lesson plans as the development of early childhood and Kindergarten Educational Subjects, and they realize the development of instructional design model which contributes on lesson planning and implementation is much needed. Second, the Differentiated Instructional design Model for Early Childhood are developed, which consists of the cyclic process - pre-lesson phase, lesson implementation phase, and assessment phase -based on development characteristics of early childhood. Third, the experiment of the developed model showed that the scores of experimental group is significantly higher than those of comparative group in knowledge and technique development aspect, and self-understanding development aspect among the aspects of development of teacher's professionalism.