• School Mathematics
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• v.12 no.2
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• pp.151-176
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• 2010

This research aims to conduct the teaching experiment based on the constructivism to elementary preservice teachers and report on how they construct and develop the mathematical knowledge on ratio concept. Furthermore, this research aims to examine the significances and difficulties of "constructivist teaching experiment" which are conceived by elementary preservice teachers. As the results of this research, I identified the possibilities and limits of mathematical knowledge construction by elementary preservice teachers in the "constructivist teaching experiment". And the elementary preservice teachers pointed out the significances of "constructivist teaching experiment" such as the experience of prior thinking on the concept to be learned, the deep understanding on the concept, the active participation to the lesson, and the experience of learning process of elementary students. Also they pointed out the difficulties of "constructivist teaching experiment" such as the consumption of much time to carry out the constructivist teaching, the absence of direct feedbacks by teacher, and the adaption on the constructivist lesson.

• The Journal of the Korea Contents Association
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• v.7 no.7
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• pp.104-113
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• 2007

The purpose of this study is to develop contents and management strategies of Social Welfare Education e-Learning. For this study, Data were collected from students who were attended to Introduction to Social Welfare e-Learning in K center between first semester, 2006 and first semester, 2007 as well as professors and system operator. It is important meaning to performance as the first empirical study which is on the e-Learning of social welfare studies. As a results, it has been proved that systematic preparation process, study contents which is centered field, active interaction among students, study management in time efficiency, technological supports for system improvement are significant factors on construction and development of Social Welfare e-Learning.

• Journal of The Korean Association For Science Education
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• v.24 no.3
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• pp.612-620
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• 2004

The purpose of this study was to investigate how middle and high school students represent circuit diagrams with different shapes but electrically same. What prototypes of circuit which students possessed were, how students represented the connection of resistors, and what criteria used while grouping the circuit diagrams were investigated. The participants were 10 middle and 10 high school students. The results show that they represented the circuit diagrams by the geometrical resistor configurations rather than physics principles, not considering the presence of a junction or a battery on the branch. This representation was constrained by the circuit prototypes. Middle and High school students seems to have the own way of representing circuit diagrams without considering physics principles.

• Journal of The Korean Association of Information Education
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• v.21 no.2
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• pp.161-169
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• 2017

We often use spellcheckers in order to correct the syntactic errors in our documents. However, these computer programs are not enough for elementary school students, because their sentences are not smooth even after correcting the syntactic errors in many cases. In this paper, we introduce an automated method for evaluating the smoothness of two synonymous sentences. This method uses a recurrent neural network to solve the problem of long-term dependencies and exploits subwords to cope with the rare word problem. We trained the recurrent neural network language model based on a monolingual corpus of about two million English sentences. In our experiments, the trained model successfully selected the more smooth sentences for all of nine types of test set. We expect that our approach will help in elementary school writing after being implemented as an application for smart devices.

• Journal of The Korean Association For Science Education
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• v.20 no.2
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• pp.250-261
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• 2000

In this study, a concept learning strategy emphasizing social consensus during discussion (SCS) was developed. The instructional effects of this strategy were compared with those of cognitive conflict strategy (CCS) and traditional instruction in the aspects of students' achievement, conceptions, communication apprehension, perceptions of science learning environment, and perceptions of small group discussion. There were no significant differences in the scores of an achievement test. For the students of low communication competency, however, the scores of the CCS group were significantly higher than those of the traditional group. The adjusted mean of the SCS group was higher than those of the other groups in a conceptions test. The social consensus strategy was also found to be more effective in learning concept for those who were more competent in communicating. No significant differences were found in the communication apprehension. The scores of three groups did not differ significantly in the subcategories of 'personal relevance' and 'students' negotiation' of the test of the perceptions of science learning environment. However, the students in the SCS group scored higher in 'participation'. The students in the SCS group perceived small group discussions more positively.

• School Mathematics
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• v.11 no.3
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• pp.431-462
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• 2009

Introduction of logarithm in mathematics textbook in the 7th national curriculum of mathematics is the inverse of exponent. This introduction is happened that students don't know the necessity for learning logarithm and the meaning of logarithm. Students also have solved many problems of logarithm by rote. Therefore, we try to present teaching unit for the logarithm according to the historico-genetic principle. We developed the learning-teaching module of unit for the logarithm according to historico-genetic principle, especially reinvention for real contexts based RME. Loaming-teaching module is carried out as the performance assessment. As a results, We find out that this module helps students understand concepts of logarithm meaningfully Also, mathematical errors of logarithm is revised after the application of learning-teaching module.

• Journal of Digital Contents Society
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• v.11 no.1
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• pp.47-55
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• 2010

Cultural Content Industry, a core industry based on knowledge, is becoming an economic model making new benefits by adding human creativity, imagination, sensitivity and style in to information technology. Cultural Contents Industry representing cultures of each countries is facing major changes towards a new competitive industry of each nation. Cultural content of a country is upbringing new contents power developing into a new industry by flattening the barriers within nations. But cooperations face difficulties in launching the industry because of limited information about the current market and lack of understanding in cultural differences. In order to solve this problem, this paper aims to create global network leading to increase of export and creation of new market with cultural contents and train local specialists. In order to search for the ways to maintain Korean contents in other nations and expand exportation. cooperations invite leading cultural contents groups to South Korea, let the groups experience Korea's contents. Cooperations initiated invite training, dispatch training by Korean companies and international students training. The purpose of this paper is to support education system, ETS-CS(Educational Training System for Contents Specialist) and analyse practices applied in the field to develop a better cultural contents industry.

• The Journal of Korean Association of Computer Education
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• v.12 no.2
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• pp.61-75
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• 2009

Modern day people can easily use an e-mail client for general communication, because of using Internet and cellular phone. The mail client for the purpose of private and business affair, advertisement, news searching, and business letter is widely used and has side effects. People could send an important document via an electronic mail client. It is important to support an e-mail client intelligent. We think that many kinds of techniques of natural language processing must be provided in the client with human's emotion. We consider to design a new mail client with six kinds of senders' emotional information; delight, angry, sad feeling and message to express, manner of talking, a discomfort index etc. Before sending an e-mail, we suggest a user to correct a bad word because we do not want to feel bad to a receiver. We present a proper process of sending/receiving for users with a new designed e-mail clients.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.6
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• pp.9-15
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• 2021

The current study examined the cyber learners' perceptions of the educational usefulness of Grammarly, an online grammar checker, after it was used to provide feedback to cyber university students in a situation where the instructor could not provide sufficient feedback on their written work in English. The survey results, revealed that the majority of learners had positive attitudes to the usefulness of Grammarly. In particular, the feedback immediately available whenever needed was regarded as helpful in improving English sentences, and most learners were highly satisfied with the amount of the feedback provided by Grammarly. It was also found that Grammarly had positive effects in terms of the affective domains, helping learners to improve their interest and confidence in English writing. In particular, Grammarly was found to be effective in reducing writing anxiety in English, one of the main factors negatively affecting writing performance in English. However, along with these positive results, limitations such as inaccurate feedback and inadequate explanation of errors were also found. Therefore, when Grammarly is used for English education, it is necessary to conduct multifaceted research to develop effective teaching methods that can minimize the problems that may arise from these limitations.

• Proceedings of the KAIS Fall Conference
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• 2008.11a
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• pp.430-432
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• 2008

학교와 같이 대단위 교육을 수행하는 곳에서 필수적으로 사용되는 것은 강의실 의자이다. 소비자 중심적인 시대적 변화에 따라 많은 제품들이 다양한 소비자의 요구가 반영되어 출시되고 있으나, 강의실 의자는 아직 이러한 요구가 받아들여지지 않거나 무시되고 있다. 강의실에서 학생들이 가장 불편해 하는것은 자신의 신체치수에 적합하지 않는 강의실 의자이다. 따라서 본 연구에서는 다양한 신체치수를 반영할 수 있는 가변형 강의실용 의자를 개발하고자 한다. 신체치수는 앉은키와 체형을 고려하여 앉고 일어서는데 불편함이 없도록 책상 접힘과 의자와의 거리조절이 가능하고, 사람의 신장에 따라 높낮이 조절이 가능한 구조로 설계하여 기존의 평균책상 사이즈에 구애받지 않고 사용자의 신체구조에 따라 자유롭게 조절시켜 장시간 의자에 앉아 있을 때 불편함을 개선하고 불균형한 자세 등을 교정시켜 줌으로써, 학업 시 바른 자세를 유도하며 학업능률을 향상시킬 것으로 기대한다.