• Journal of Educational Research in Mathematics
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• v.25 no.4
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• pp.525-547
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• 2015

This study analyzed the written texts of textbook and the teacher's discourse explaining 'the relationship between quadratic functions and quadratic equations' in the 9th grade high school mathematics class. Data consisted of the lecture recordings and the textbooks were analyzed based on the Halliday's systemic functional linguistics. According to the results, the written texts of the textbook used lexico-grammatical strategies such as generalization using hyponomy of meanings, mathematical objectification through nominalization and materialization of meaning through change in themes to compose mathematical concepts. The textbook generalized from an example in the description of formulating mathematical concepts, and in this process the organizational interactions of discourse-semantic level and lexico-grammartical level appeared. On the other hand, the teacher's doscourse appeared the change in transitivity and the addition of the reasons and the process. Also the teacher used explanation process of formulating the relationship between quadratic functions and quadratic equations. The linguistic characteristics of the teacher were linguistic implication and omission of lexemes due to contextual ommission. And there was no use of structural lexico-grammatical resources that influence the discourse-semantic level. This results provide a new framework for analyzing mathematical discourse, and suggest the lexico-grammatical strategies that can be used to explain mathematical concepts by teachers in math classrooms.

• The Journal of Korean Philosophical History
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• no.25
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• pp.293-313
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• 2009

A general sequence of moral instruction in elementary school is advanced to understanding of contents, application of understanding, reflection of application. The understanding of contents as first stage of instruction is related with abstract moral concepts. A model of concept analysis as one of the moral instruction models could be applied to understand on abstract moral concept. We can find rationale of that model from the 'analysis of concept' that is proposed by John Wilson. His 'analysis of concept' is thinking technique based on informal logics of ordinal language. These technique is constituted of 'Isolating questions of concept', 'Right answers', 'Model cases', 'Contrary cases', 'Related cases', 'Borderline cases', 'Invented cases', 'Social context', 'Underlying anxiety', 'Practical results', 'Results in language'. And these techniques could be categorized some of stages like finding a concept for analysis, finding a cases for understanding, concerning on the contexts about using context, concerning on the verification of defined concept. But it has difficulties that directly applicate these stages and technique to elementary school students. For instruction in elementary school, teacher should be translated these terms about each stages and technique to terms suited for students. And it is good for students that these activity can inspire students' interests. In this thesis, I'm trying to translate original terms about concept analysis technique to terms that elementary school students can understand. And then, I'm intending to propose of moral instruction method about truth telling as a example.

• Journal of The Korean Association of Information Education
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• v.12 no.4
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• pp.375-384
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• 2008

Computer programming has educational effect on improving high-level thinking abilities. However, students initially have to spend too much effort in learning the basic grammar and the usage model of programming languages, which negatively affects their eagerness in learning. To remedy this problem, we propose to apply the Scratch to a Game Developing Programming Class; Scratch is an easy-to-learn and intuitive Educational Programming Language (EPL) that helps improving the Meta-cognition and Self-efficacy of middle school students. Also we used the Demonstration-Practice instruction model with self-questioning method for activating the Meta-cognition. In summary, a game developing programming class using Scratch was shown to significantly improve the Meta-cognition of middle school students. However it was shown to insignificantly improve the Self-efficacy of girl students group.

• Journal of the Korean Chemical Society
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• v.50 no.6
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• pp.477-485
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• 2006

study investigated the influences of the forms of verbal external representations and students' verbal learning style in learning chemical concepts with drawing as a method to assist students in connecting and integrating multiple external representations. Seventh graders (N=133) at a coed middle school were assigned to formal drawing (FD) and personalized drawing (PD) groups. Students in the PD group were provided words at personalized style as verbal external representations for drawing, while those in the FD group were provided words at formal style. All students were taught about Boyles Law and Charless Law for two class hours. Results revealed that the scores of a conception test for the PD group were significantly higher than those for the FD group. In a situational interest test, students with strong verbal learning style preference scored significantly higher than students with weak verbal learning style preference in the two groups. Most PD group students were found to prefer to read verbal external representations at personalized style for drawing rather than at formal style, and perceived their activities positively upon cognitive, affective and motivational aspects. Students with strong verbal learning style preference had more positive perceptions about their activities than students with weak verbal learning style preference especially upon affective and motivational aspects.

• Journal of The Korean Association For Science Education
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• v.39 no.3
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• pp.389-403
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• 2019

This study aims to analyze criteria and characteristics for preservice elementary teachers' critiques of their peers' inquiry-based instruction. This study reviews critiques written by 31 preservice elementary teachers enrolled in an elementary school science inquiry methods course wherein the teachers designed and implemented inquiry-based instruction. These preservice teachers participated in inquiry-based instruction as if they were elementary students and then evaluated their peers' instruction. Analysis of the critiques reveals that preservice teachers evaluated their peers' instruction on the following criteria: instruction context, science content, teaching strategies, students, instructional goals, non-verbal attitude, and assessment. Their beliefs about teaching science inquiry were reflected in the critiques. Additionally, it was found that four orientation for teaching inquiry-didactic, academic rigor, activity-driven, inquiry orientation-reflected in critiques; some of critiques held more than one of these orientations. And they did not merely criticize but suggested alternatives to general teaching strategies; furthermore, of inquiry-instruction specific teaching strategies. They showed higher epistemic understanding of inquiry-based instruction after mid-term demonstrations. The evidence demonstrated that the proportion of critiques specifically about inquiry-based instruction increased after the mid-term demonstrations. Moreover, the post mid-term critiques emphasized interaction between students as well as understanding of the nature of science. These findings could provide implication for teaching inquiry and criticizing others' instruction as part of elementary school science courses in preservice elementary teacher education.

• Journal of Digital Contents Society
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• v.11 no.2
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• pp.161-168
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• 2010

In the past, Korean English language learners focused on knowledge of grammatical structures. Thus Korean trained instructors, who focused on explaining the grammar structures, were seen as being preferable for teaching in EFL (English as a foreign language) classrooms. However, with the focus changed to speaking capability Koreans now desire 'fluent' English more than 'accuracy' seeing if possible (Mottos, 1997). Current study has been concerned about the issue of how non-native learners of English perceive the difference between native teachers (NTs) and non-native teachers (non-NTs) of English in the context of ELT classroom. The study explores the issues and problems the followed and how non-NTs can enhance teaching practice of speaking and listening lessons through multimedia application.

• Journal of The Korean Association For Science Education
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• v.21 no.3
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• pp.487-496
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• 2001

In a 7th graders' cooperative science class, verbal behaviors were categorized and their relationships with the improvement of learning strategies used. motivation, and attitudes were investigated. Students' perceptions of cooperative learning were also studied by the achievement level. Verbal behaviors in cooperative learning were positively related with the improvement of monitoring and organization strategies used, self-efficacy, and attitude toward science class. In the analyses of students' perceptions of cooperative learning, medium- and low-achieving students had positive perceptions but some high-achieving students had negative ones. In the aspect of effectiveness of cooperative learning, especially, medium- and low-achieving students perceived that they could learn more and better due to verbal interactions with peers. To be contrary, high-achieving students perceived that they learned less and superficially.

• Journal of the Korean Society of Earth Science Education
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• v.13 no.1
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• pp.90-99
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• 2020

The purpose of this study is to investigate the difference in science class ability, science pedagogy achievement and class evaluation factors according to elementary pre-service teacher's gender. Also, the correlation between science pedagogy achievement and science instructional ability was examined. Finally, the evaluation factors applied to the evaluation of science instruction according to male and female gender of elementary pre-service teachers were examined. This study was conducted from september 2019 to december 2019 for 88 elementary pre-service teachers attending P University of Education in Pusan metropolitan city. Among these 88 students, 32 elementary pre-service students were male, 56 were female. The conclusions of this study are as follows. First, as a result of analyzing the science instructional ability according to genders of elementary pre-service teachers, female elementary pre-service teachers showed statistically significant higher scores in science class ability compared to male elementary pre-service teachers. Second, as a result of analyzing the achievement of elementary science pedagogy according to gender of elementary pre-service teachers, female showed statistically significant higher scores for elementary science pedagogy than that of male. Third, as a result of analyzing the correlation between science instructional ability and elementary science pedagogy achievement, there was no statistically significant difference. This result can be applied both side of male and female. Fourth, both male and female pre-service teachers had various instructional evaluation factors, among which the linguistic factors of the instruction were used most frequently as criteria for instructional evaluation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.457-462
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• 2010

본 연구는 학습자의 인지발달 단계에 적합한 프로그래밍 언어를 활용하여 모든 학문의 기초 인지 능력인 학습자의 정보과학적 사고 능력을 향상에 미치는 효과를 검증하는 실험연구이다. 과중한 인지적 부담, 문법 위주 등 기존 프로그래밍 학습의 문제점을 보완하고자 등장한 교육용 로봇을 이용하여 실생활 문제해결의 정보과학적 사고능력 향상을 위한 텍스트기반 프로그래밍 언어(TPL)와 비주얼기반의 프로그래밍 언어(VPL) 중 인문계 고등학생의 인지발달 단계에 적합한 프로그래밍 언어에 대한 효과성을 분석하였다. 교육용 로봇 및 로봇 프로그래밍 언어에 대한 선행 연구를 통해 NXT Robot Educator 교육내용을 분석하고 각 단계에 적절한 실생활 과제를 추출하여 로봇 교육용 프로그램을 개발하고 적용하였다. 이 연구는 프로그래밍을 경험이 없는 인문계 고등학교 학생 집단을 선정하여 TPL과 VPL을 활용한 로봇 프로그래밍 수업을 20차시 실시한 후 두 집단 간의 정보과학적 사고능력 향상의 차이를 검증하였다.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.144-147
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• 2009

본 연구에서는 21세기 지식정보사회에 학생들의 창의력 향상을 위하여 MSRDS에서 제공하는 에디터인 VPL(Visual Programming Language)를 이용한 로봇 프로그래밍 학습이 창의력에 미치는 효과를 연구하였다. VPL은 로봇 애플리케이션 개발을 프로그래머가 아닌 학생들도 쉽게 사용할 수 있도록 MSRDS에서 제공하는 프로그램이며, 이를 시뮬레이션과 연결시켜 로봇 하드웨어가 없이 손쉽게 학습을 할 수 있게 하였다. 이를 위하여 VPL에서 사용하는 기본 Activity를 이용하여 프로그래밍의 구문을 자연스럽게 학습할 수 있는 수업 내용을 개발하였으며, 연구 대상은 충청남도 B군에 위치한 B공고 3학년의 컴퓨터응용관련 학과 1개반을 대상으로 C언어를 이용한 기존의 마이크로 장비 프로그래밍 수업과 VPL을 이용한 로봇 프로그래밍 수업을 상호 비교하려고 한다. 이 연구에서는 VPL을 통하여 손 쉽게 프로그래밍을 하고 흥미가 유발되어 자신이 생각한 대로 로봇의 동작을 구현하는 과정에서 자연스럽게 문제해결능력이 신장된 것을 확인하고자 한다.