• Communications of Mathematical Education
• /
• v.27 no.4
• /
• pp.567-580
• /
• 2013

As integrated essay writing is performed in university entrance examinations, teachers and students recognize the importance of integrated essay, but teachers have still difficulties of teaching methods. The purpose of this study is to derive educational implications through case of mathematics instruction for integrated essay education to pre-service mathematics teachers. The content knowledge of this class is a definition of conic section in mathematics and properties of conic section in an antenna reflector. The students have to discover them using the history of math, manipulative material, paper-folding and computer simulation. In this teaching and learning process the students can realize mathematical knowledge invented by humans through history of mathematics. The students can evaluate the validity of that as create and justify a mathematical proposition. Also, the students can explain the relation between them logically and descript cause or basis convincingly in the process of justifying. We should keep our study to instructional materials and teaching methods in integrated essay education.

• Journal of Educational Research in Mathematics
• /
• v.19 no.4
• /
• pp.531-543
• /
• 2009

This study identified what cognitive attributes are required of eighth graders to solve geometrical problems such as 'Recall,' 'Analyze,' 'Justify,' 'Synthesize/Integrate,' and 'Solve Non-routine Problems' by using the cognitive diagnostic theory. The five attributes are proved as the skills for solving the geometric problems. Many students have not fully mastered the attributes of 'Justify' and 'Synthesize/Integrate'. There was high correlation between these attributes. 'Analyze' best predicted the changes in the geometric achievement. And while students with high levels of geometrical achievement have mastered all the five attributes, those in the mid- and low-level range of performance have mastered fewer attributes.

• Communications of Mathematical Education
• /
• v.30 no.4
• /
• pp.435-452
• /
• 2016

This study was designed to explore students' instrumentalization in relation to the van Hiele's teaching method within a technology environment using GeoGebra. To carry out the study, a total of 4 lesson units was developed based on van Hiele teaching method for two slow learners in Gyeonggi province, Korea. The results of study were as follows. Instrumentalization of students was actualized from preparation, to adaptation, and to application stages. In preparation, and adaptation stages, depending on visualization, students used a trial-and-error method a lot, however in application stage the role of GeoGebra was just to check the solution of what they conjectured. Therefore, a teacher should prepare geometric tasks according to the processes of instrumentalization based on geometric teaching method. During instrumentalization and instrumentation of users, usage scheme(US) and instrumented action scheme(IAS) should be concrete.

• Journal of The Korean Association For Science Education
• /
• v.35 no.5
• /
• pp.857-870
• /
• 2015

Concerning elementary school science subject electric circuit units, which are regarded as difficult by teachers and students, this study aims to use the knowledge state analysis method along with interviews to analyze the knowledge state and hierarchy of inquiry abilities. Before and after applying the electric circuit inquiry abilities module, the question items aimed at assessing the basic inquiry abilities and integrative inquiry abilities for electric circuits were presented to students, and their knowledge state was analyzed along with interviews. Through analysis of the knowledge structure and hierarchy of inquiry abilities about electric circuits, the way of thinking of teachers who taught inquiry abilities, and the way of thinking of students were found to be visually different from each other, and this is an important factor that should not be neglected in the process of teaching and learning about inquiry abilities and should be considered. In addition, the presentation of the knowledge state of and hierarchical relations between inquiry abilities factors can offer implications for guidance on students' learning about inquiry abilities.

• Journal of agricultural medicine and community health
• /
• v.39 no.4
• /
• pp.230-239
• /
• 2014

Objectives: Health-related quality of life (HRQoL) is an important outcome for middle school students. This study was designed to illustrate the effect of social support and class cohesiveness associated on HRQoL. Methods: The subjects comprised 516 students from three middle schools in Daegu, South Korea that responded to a self-administered questionnaire in February 2014. The purposes of the questionnaire were explained to the subjects. Results: The total mean of HRQoL was $81.1{\pm}15.3$. Social functioning showed the highest score of $87.1{\pm}15.3$ and emotional functioning showed the lowest score of $73.8{\pm}21.5$. Teacher support (B=3.185, p=0.001) had a significant effect on the physical health summary scores. Class cohesiveness (B=2.237, p=0.022), friendships (B=5.102, p<0.001) and teacher support (B=2.498, p=0.006) had a significant effect on the psychosocial health summary scores. Finally, class cohesiveness (B=2.137, p=0.016), friendships (B=4.133, p<0.001) and teacher support (B=2.670, p=0.001) had a significant effect on the overall scores. Conclusion: The results of this study provide a basis for the development of strategies to improve health-related quality of life for middle school students, namely that relevant programs should be based on the improvement of social support and class cohesiveness.

• Journal of the Korean earth science society
• /
• v.39 no.6
• /
• pp.617-629
• /
• 2018

The purpose of this study was to explore the elementary school teachers' perceptions about making a model of volcanic activity. Thirty elementary teachers participated in the study after they in which they conducted the experiment of "Making a Model of Volcanic activity". A questionnaire was used to investigate how the teachers understood the strengths and weaknesses of the experiment in terms of the goals of school science inquiry. The results showed that 50-60% of the teachers were able to conduct the experiment as guided in the textbook regardless of their career or area of concentration. The teachers perceived that the experiment of current textbook was safe and useful for students to develop their creativity. However, they pointed out three major weaknesses of the textbook experiment: First, the textbook experiment does not clearly present the main purpose of the activity. Second, it does not appropriately reflect the natural volcanic activity. Third, it is a merely simple craft activity. In addition, the teachers agreed that the main goals of school science inquiry are the application of scientific knowledge, development of inquiry skills and cultivation of student's curiosity. However, the teachers perceived that the experiment of current textbook did not meet these three goals. They suggest that the experiment reflect the nature of real volcanic activities.

• 한국정보교육학회:학술대회논문집
• /
• 2004.08a
• /
• pp.521-528
• /
• 2004

컴퓨터 보급률이 크게 향상됨에 따라 정보의 공유나 교환이 대우 쉬운 웹의 특성을 이용하여 초등학생들도 여러 가지 형태의 학습과제를 해결하는데 컴퓨터를 많이 활용하고 있다. 이에 본 연구에서는 학생들의 과제 해결 유형을 살펴보고, 각 유형에 따른 과제 학습의 이해력을 평가하여 학업성취도와의 상관관계를 밝히며 컴퓨터를 활용한 과제 해결방법과 전통적인 해결방법이 학습의 이해력에 미치는 영향의 차이를 비교해 보았다. 학습의 극대화를 위한 효과적인 과제해결 방법은 교사의 정보검색안내를 필요로 하며 과제에 대한 적극적인 의미의 평가가 선행될 때 학업성취도가 높게 나타났다.

• 한국HCI학회:학술대회논문집
• /
• 2007.02b
• /
• pp.200-205
• /
• 2007

본 연구에서는 컴퓨터를 이용해 시간과 공간에 구애 받지 않고 교사와 학생, 학생과 학생이 쌍방향으로 대화할 수 있는 첨단의 교육환경인 이러닝의 콘텐츠에 대한 연구를 진행하였다. 이러닝에서의 콘텐츠 디자인은 교육의 효율성과 수월성의 측면에서 많은 연구가 필요하다. 본 연구에서는 이러닝에서 교육 콘텐츠의 제작에 있어 웹 아이덴티티 적용의 필요성과 그 개념 및 효율성에 대한 연구를 수행하였다. 이론 고찰을 통해 이러닝에서 웹 아이덴티티가 학습에 미치는 효율적 작용을 연구하였고, 실증적 조사연구를 통해, 이러닝에서의 웹 아이덴티티 구현과 과목 선호의 상관관계를 규명하였다. 조사 방법으로는 가설을 세우고 이를 검증하는 방식으로 이루어졌으며, 가설은 '웹 아이덴티티가 적용된 이러닝 콘텐츠는 과목 선호에 영향을 주어 학습동기유발 및 학업 성취에 긍정적인 영향을 준다'로 설정하였으며, 사이버대학교 재학생을 대상으로 웹을 통한 이러닝에서 학습 콘텐츠에 웹 아이덴티티 적용 유무에 따른 과목 선호를 조사하였다. 이 조사를 통해 이러닝 콘텐츠에서 웹 아이덴티티 구현이 과목 선호도에 긍정적인 영향을 준다는 것이 확인되었다.

• Korean Journal of Childcare and Education
• /
• v.8 no.4
• /
• pp.137-157
• /
• 2012

The purpose of this study was to analyse the influence of teachers' instructional professionalism and job stress on the adjustment of First-grade elementary school children. The subjects were 250 elementary school children and their 25 teachers in G City and J Province. Data were collected by questionnaires and analyzed by Pearson's r and Regression analysis using the SPSS 18.0 version. The major results of this study were as follows: First, there were significant correlations between instructional professionalism and all the sub-variables of children's adjustment. Second, there were significant correlations between teachers' job stress and children's adjustment, with the exception of content knowledge and content-based instruction. The results showed that there were significant correlations among teachers' instructional professionalism, job stress, and children's adjustment.

• The Journal of the Korea Contents Association
• /
• v.19 no.1
• /
• pp.513-523
• /
• 2019

The purpose of this study is to investigate the perception of pre-service secondary English teachers on peer feedback in English composition. For this purpose, a total of 37 students who took the English composition class for 15 weeks participated in the survey. After completing the survey, data were analyzed to find out the students' perception on peer feedback performed in their English composition class through frequency analysis and descriptive statistics. The findings of this study are as follows: First, the students showed positive attitudes towards on peer feedback activities. Second, the participants had received considerable help in the content, ideas and organization of their composition. Third, noticing that they all have made similar mistakes in their writing, the subjects were relieved to know that they are not falling behind their other colleagues. Fourth, the subjects did not trust the feedback contents among the peers, which were found in both the feedback giver and receiver. In particular, feedback from peers who had low English proficiency was rarely helpful. Fifth, the students were afraid that their relationship might become uncomfortable with peers when they pointed out peer's writing errors or made specific suggestions about their peer's writing. Finally, pedagogical implications were discussed based on the research findings.