• 한국수학교육학회지시리즈A:수학교육
• /
• 제54권1호
• /
• pp.1-11
• /
• 2015

The purpose of this study was to provide fundamental data and implication for forming desirable viewpoint of mathematics lesson critique and for improvement of expertise in lesson by compare and analyze the viewpoint of mathematics lesson critique of pre-service and in-service teachers. For the achievement of the purpose, The lesson critique materials of each 25 pre-service and in-service mathematics teachers were collected and arranged, and compare and analyze the viewpoint of mathematics lesson critique of pre-service and in-service teachers by using the standard for analyzing viewpoint of lesson critique composed of two categories, five main codes and 18 sub codes. The results of this study, both pre-service and in-service teachers have tendency for criticising lesson focusing on the practice rather than plan of lesson and both pre-service and in-service teachers showed evaluative reaction in most of critical statements and used positive ones rather than negative ones. The only pre-service teachers, though minor of them, showed non-evaluative reaction in criticising class and most of the statements were just description and explanation without any their own judgement for the scenes and activities of lessons and most of pre-service teachers have tendency to include reflection and introspection for their own class in lesson critique.

• 영어어문교육
• /
• 제12권1호
• /
• pp.103-129
• /
• 2006

This paper presents a case study of the effectiveness of debate class in promoting speaking skills of advanced learners. The researcher adopted English debate techniques in an English speaking class during four-week teacher training program and investigated how teachers responded to the new technique. Forty-five middle and high school teachers participated in the study and classroom observation, pre-survey, post-survey, and focus group interviews were used as the major research methods. The teacher pre-survey results presented that teachers prefer a conversation class where they can directly acquire proper sentence patterns and speaking strategies rather than spend time in performing communicative events. The results of the focus group interview and post-survey confirmed that a debate class can meet this specific teachers' needs. Most teachers responded positively to the debate classes since: 1) debate techniques are relatively new ideas to Korean teachers; 2) debate techniques require speed and accuracy in speech; thus teachers could learn to present their ideas logically and efficiently in a limited time through repeated argument exercises. The study result implies that debate technique can be an effective vehicle in an EFL context to promote advanced learners' logical thinking skills and logical English sentence structures.

• East Asian mathematical journal
• /
• 제22권2호
• /
• pp.131-149
• /
• 2006

In this paper we introduce the concept of $\gamma$-preopen sets in a topological space together with its corresponding $\gamma$-preclosure and $\gamma$-preinterior operators and a new class of topology $\tau_{{\gamma}p}$ which is generated by the class of $\gamma$-preopen sets. Also we introduce $\gamma$-pre $T_i$ spaces(i=0, $\frac{1}{2}$, 1, 2) and study some of its properties and we proved that if $\gamma$ is a regular operation, then$(X,\;{\tau}_{{\gamma}p})$ is a $\gamma$-pre $T\frac{1}{2}$ space. Finally we introduce $(\gamma,\;\beta)$-precontinuous mappings and study some of its properties.

• 공학교육연구
• /
• 제26권6호
• /
• pp.79-86
• /
• 2023

In our research, we delved into the impact of video length assigned for pre-class assignments on students' level of engagement. What we discovered is that as the length of the video increases, student engagement tends to decrease and the time allocated for homework preparation does not significantly influence engagement, as many students tend to complete their assignments just before the due date. Interestingly, the well-known "6-minute rule" often advocated for online educational videos does not align with the dynamics of real university settings. Whether in traditional lecture-based classes or flipped learning environments, students exhibit a high degree of self-responsibility when it comes to video consumption. Our findings strongly suggest that, in the context of flipped learning, it is advisable to create videos that are shorter than 15 minutes in length.

• 디지털융복합연구
• /
• 제14권2호
• /
• pp.31-39
• /
• 2016

최근 대학 수업에서 SNS(Social Network Service)를 활용하여 교수자와 학습자 간의 협력적인 상호작용 및 의사소통을 향상시키고자 지속적인 노력이 이루어지고 있다. 본 연구는 SNS를 활용한 수업에서 예비교사의 자아탄력성, 사회적 지지 수준이 수업성과 인식에 어떠한 관계가 있는가를 알아보기 위하여 대전 충남지역 대학의 예비교사 137명을 대상으로 하여 설문조사를 실시하였다. 연구 결과에 따르면, 여학생보다 남학생의 수업 만족도가 높은 것으로 나타났으며, 자아탄력성-사회적 지지, 자아탄력성-수업 만족도, 사회적 지지-수업 만족도, 사회적 지지-학기 만족도, 수업 만족도-학기 만족도 간에 유의한 상관이 있는 것으로 나타났다. 또한 자아탄력성과 사회적 지지가 수업성과 인식에 유의한 영향을 미치는 것으로 나타났다. 이에, 대학 교직과정에서 다양한 뉴미디어를 활용한 수업을 성공적으로 운영하기 위해서는 학습자 특성 및 수업활동 적응에 보다 세밀한 관심을 기울일 필요가 있다.

• 한국수학교육학회지시리즈C:초등수학교육
• /
• 제21권1호
• /
• pp.1-17
• /
• 2018

최근 플립드 러닝, 블렌디드 러닝 등 전통적인 강의식 수업에 변화를 꾀하는 다양한 시도가 이루어지고 있으며, 다양한 분야에서 그 효과성이 검증되고 있다. 한편, 2015 개정 교육과정에서는 학생 참여형 수업을 활성화하여 자기주도적 학습 능력을 기를 수 있도록 하고 있다. 이러한 시대적 요구에 맞게 교수자 역시 수업 방식의 변화를 시도하여야 하고, 그러한 새로운 수업 방식의 장단점과 효과를 확인하면서 더 나은 수업으로의 개선을 꾀하여야 할것이다. 본 연구에서는 교육대학 2학년 학생들이 필수로 이수하는 초등수학교육 이론 수업에 플립드 러닝을 적용한 사례를 분석하였다.

• 수산해양교육연구
• /
• 제25권4호
• /
• pp.878-890
• /
• 2013

The purpose of this study is to apply the PEOE class model that can enhance students' scientific creative problem-solving ability and self-directed learning ability in the middle school science subject and analyze the effects of it on students' long- and short-term retention, scientific creative problem-solving ability, and self-directed learning characteristics. And the paper has gained the following results: First, according to the result of analysis through the pre-test, post-test, and delay test to examine the effects of PEOE-based class on learners' long- and short-term retention, it is found to be statistically significant in the significant level of .05. In other words, the class using PEOE influences learners' short-term retention significantly, but it is even more effective in transmitting the concept that students acquire into their long-term memory. Second, according to the result of analysis through the pre-test and post-test to examine the effects of PEOE-based class on learners' scientific creative problem-solving ability, it is found to be statistically significant in the significant level of .05 in general. However, 'elaboration' and 'originality', the subfactors of scientific creative problem-solving ability, do not indicate significant effects. Third, according to the result of analysis through the pre-test and post-test to examine the effects of PEOE-based class on learners' self-directed learning characteristics, it is found to be statistically significant in the significant level of .05 as a whole. However, 'openness' and 'future-oriented self-understanding', the subfactors of self-directed learning characteristics, do not exert significant effects. Based on the above study results, it can be concluded that PEOE-based class is more effective for learners' academic achievement in science, scientific creative problem-solving ability, and self-directed learning characteristics than lecture-method instruction regarding the middle school science unit of 'The Properties of Air and Weather Change'.

• 한국과학교육학회지
• /
• 제33권6호
• /
• pp.1087-1102
• /
• 2013

본 연구에서는 예비과학교사들이 교육실습기간 중 수업 실행에서 보이는 반성의 분야와 수준에 대해 알아보았다. 모두 7명의 예비과학교사가 연구에 참여하였으며, 이 중 4명의 예비과학교사는 반성적 사고를 촉진할 수 있는 프로그램을 추가로 제공받았다. 예비과학교사들의 반성은 주로 수업 운영에 관련된 분야인 주의 집중 및 동기 유발 방식, 교수 활동에 대한 반성과 개선, 상호작용 등에서 나타났으며, 과학과 교육과정의 이해 및 재구성과 차시 예고에 대한 반성은 거의 이루어지지 않았다. 반성적 사고를 촉진하는 프로그램을 제공받은 예비과학교사들은 일반적인 교육실습 프로그램에 참여한 예비과학교사들에 비해 반성의 빈도가 높게 나타났다. 예비과학교사들이 반성을 보인 글들은 대부분 기술적 반성에 해당했으며, 반성적 사고를 촉진하는 프로그램을 제공받은 예비과학교사들은 기술적 반성 뿐 아니라 높은 수준의 반성인 대화적 반성도 많이 나타났다. 그러므로 사전 교육프로그램과 반성저널쓰기, 교사들의 수업평가 및 피드백은 예비과학교사들의 반성의 빈도와 수준을 높이는 것으로 보인다.

• 한국정보통신학회논문지
• /
• 제9권2호
• /
• pp.295-300
• /
• 2005

본 논문에서는 블루투스 Class-1에 응용 가능한 중심주파수 2.4CHz의 2단 Class E 전력 증폭기를 설계하였다. 전력 증폭기는 고효율 특성을 위해 소프트-스위칭을 하는 Class E로 설계하였다. 증폭기 가 포함된 래치-구조의 구동증폭기는 다음단의 전력 증폭기를 소프트-스위칭 모드로 동작시키기 위해 빠른 상승시간과 하강시간의 출력신호를 만든다. 이 구조는 전력 증폭기의 효율특성을 개선시킨다. 제안한 전력 증폭기는 65.8$\%$의 전력부가효율, 20dBm의 출력전력과 20dB의 전력이득을 나타낸다.

• 대한지구과학교육학회지
• /
• 제6권1호
• /
• pp.69-77
• /
• 2013

The study aims to figure out pre-service elementary teachers' knowledge understanding on 'stratum and rock' as well as teaching-learning types on the same topic. A total of 65 seniors in an advanced science education course at B University of Education joined the research to fulfill the purpose above. With PCK classification framework, the study examined pre-service teachers' knowledge understanding on 'stratum and rock' while it analyzed how the teachers would teach the given topic to students. The results of the study are presented as follows. First, it was observed that the pre-service elementary teachers have a great understanding on 'stratum and rock' that would be taught via a science textbook for elementary fourth graders. However, regarding terms in 'shale and limestone', they appeared to have a relatively short understanding. Second, PCK elements of the pre-service teachers related to 'stratum and rock' were analyzed and according to the results, the teachers would be interested in teaching model selecting in the teaching-learning strategy field while they would be well aware of how important it is for them to perform an experiment in a teaching process. The teachers also appeared to understand that the teacher question can be mutual complementary during class. However, it turned out that the teachers would have a very much low understanding on learners' prior knowledge as they particularly believe that learning could be significantly affected by the learners' perception level as well as their learning interest and motive. Third, the pre-service elementary teachers were told to design teaching plans on 'stratum and rock' so that the study could find out what learning-teaching methods the teachers would adopt to teach the topic. It was learned that the teachers would proceed with the class basically by giving the learners a descriptive explanation on the topic and also by using pictures and drawings to enhance the learners' understanding during the class.