• Education of Primary School Mathematics
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• v.8 no.2 s.16
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• pp.97-113
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• 2004

The purpose of this study is to develop instructional methods for the formalized algorithm through informal knowledge in teaching division of fractions. The following results have been drawn from this study: First, before students learn formal knowledge about division of fractions, they knowledge or strategies to solve problems such as direct modeling strategies, languages to reason mathematically, and using operational expressions. Second, students could solve problems using informal knowledge which is based on partitioning. But they could not solve problems as the numbers involved in problems became complex. In the beginning, they could not reinvent invert-and-multiply rule only by concrete models. However, with the researcher's guidance, they can understand the meaning of a reciprocal number by using concrete models. Moreover, they had an ability to apply the pattern of solving problems when dividend is 1 into division problems of fractions when dividend is fraction. Third, instructional activities were developed by using the results of the teaching experiment performed in the second research step. They consist of student's worksheets and teachers' guides. In conclusion, formalizing students' informal knowledge can make students understand formal knowledge meaningfully and it has a potential that promote mathematical thinking. The teaching-learning activities developed in this study can be an example to help teachers formalize students' informal knowledge.

• Safety and Health at Work
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• v.11 no.4
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• pp.385-396
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• 2020

Teachers are facing various job demands with psychosocial aspects being fundamental due to the nature of the occupation. Although teachers' work is associated with different psychosocial health risks, little is known on how to identify and tackle those. Thus, a systematic literature search as per the PRISMA statement was conducted via MEDLINE (PubMed), PSYNDEX (PubPsych), and ScienceDirect. Two reviewers independently screened 2261 titles and abstracts and 169 full-texts. According to the inclusion criteria established a priori, articles from peer-reviewed journals (English or German) on psychosocial risk management in teachers were incorporated. Despite a comprehensive and sensitive search, only four publications could be identified, outlining a process to implement risk management and different assessment tools. Taken together, data presented in the articles were scarce. Recommendations for process steps and the assessment of psychosocial risks can be derived from the findings. To implement effective psychosocial risk management in the teaching profession, further research is needed, though. Effective and practicable approaches, which are accepted by the target group, should be further developed and investigated. Relevant causes of occupational strain in the teaching profession must be identified and assessed reliably. Low-threshold interventions should be implemented, and the outcome must be evaluated afterward.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.113-119
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• 2018

The purpose of this study is to verify the effect of participating in teaching material development program using 3D printer on the recognition of universal design for learning of early childhood special education pre-service teachers. This study was conducted on 30 early childhood special education pre-service teachers who participated in teaching material development program using 3D printer. The results of this study showed that the early childhood special education pre-service teachers use of the 3D printer-based teaching material development program resulted in statistically significant differences in the 4 low rank factors of the universal design for learning. This research shows that direct experience in developing teaching material using 3D printers is very effective to improve universal design for learning awareness. In addition, the experience of developing teaching material for pre-service early childhood teachers is important for improving the instructional design ability, and they need the practice of the development of the teaching material using the latest technology for teaching students with various needs.

• Journal of The Korean Association For Science Education
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• v.30 no.1
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• pp.94-106
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• 2010

In this study, we investigated the preservice elementary school teachers' self-images of science teaching and the factors influencing their formation by using Draw-A-Science-Teacher-Test Checklist (DASTT-C). One-hundred eighty-two sophomores and 183 seniors were selected from the departments of science and non-science education in three national universities of education. DASTT-C was administered to the sophomores at the beginning of the Spring Semester, and to the seniors at the beginning of the Fall Semester. Analyses of the results revealed that the self-images of science teaching of the seniors were more student-centered than those of the sophomores in the department of science education. However, there was no significant difference between the DASTT-C scores of the sophomores and the seniors in the department of non-science education. Many sophomores answered that the main factors affecting their self-images of science teaching were teaching-learning experiences in elementary, middle and high schools. However, many seniors cited the content and teaching methods in science education courses as well as direct or indirect teaching-learning experiences in teaching practices regardless of the departments. Educational implications of these findings are discussed.

• Research in Mathematical Education
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• v.6 no.1
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• pp.1-28
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• 2002

This study explored teachers (n = 219) from northern, central, southern and eastern Taiwan concerning their views about children's learning difficulties, mathematical instruction and school mathematics curricular. Results showed that teachers' mathematics knowledge or their instruction methods had no significant influence on their views of children's learning difficulties. Even though teachers indicated that understanding of abstract mathematical concepts was the most prominent difficulty for children, they tended to employ direct instruction rather than constructive and cooperative problem solving in their teaching. However, teachers' views of children's learning difficulties did influence their instructional practice. Results from in-dept interviews revealed that there were some obstacles that prevented teachers from putting constructiveism perspectives of instruction into teaching practice. Further investigation is needed to develop a better understanding of epistemology and teaming psychology as well as to help teachers create constructive learning situations.

• The Journal of the Korea Contents Association
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• v.2 no.1
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• pp.1-6
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• 2002

It is rising to Web service from the rapid supply of the computer, from the basis of Internet, and virtual learning which is the best use of Web is very important teaching instrument. This study was design and embody of the cyber teaming system that teaching of the specific character in mathematical fed and improving to learn-depression-student through driven out sever & client in Web, and the student direct take part in teaming through the Web data base system environment and using multimedia than abstract conception.

• Hwankyungkyoyuk
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• v.19 no.2 s.30
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• pp.108-121
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• 2006

Nowadays environmental education is getting important. So, it is necessary to teach for students to realize the protection environment. Self-direct homepage was developed for 'Ecology & environment' environmental education. This homepage was made for sharing searched data and can be interactive each other on the internet. Therefore, in this study, environmental teaming was planned and practiced for high school 'Ecology & environment' class by e-PBL. Self-directed teaming, collaborative teaming and performance assessment are emphasized in the 7th educational curriculum. The PBL is efficient learning model for them. This study designed for a teaching and teaming method and strategies using PBL based upon the theories and practices. This study will also develop an e-learning. As a result, it is indicated that the teaching and learning method using PBL has the positive effects on learning that the development of self-directed learning and collaboration teaming Is observed by reflect journal and presentation of students. e-PBL is a teaming model for learning-centered that adapted many school and subject. Therefore e-PBL makes full use of be 'Ecology & environment' class and environmental education.

• Journal of the Korean School Mathematics Society
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• v.2 no.1
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• pp.93-104
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• 1999

The subject of this study was the graph of relation of direct inverse proportion, linear function and quadratic function in the 1st, 2nd and 3rd grade of current middle school mathematics curriculum. GSP materials were developed to simplify the principle, trait and characteristics of graphs and make them easier to understand. The overall aim of the materials is to improve the effectiveness of teaching and learning through the utilization of enhanced students' practice. Additionally, the use of the GSP will be useful in the development of mere effective materials. The effectiveness of the GSP materials will be as followings. 1. The step by step approach of GSP materials through computer interaction will enhance students motivation and interest in mathematics. 2. By presenting the subject matter simply and in a variety of ways, difficult concepts can be understood without the use of complex mathematical calculation. 3. The GSP program is different from CAI and other software programs. It should be used only after learning how to input and output data.

• East Asian mathematical journal
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• v.31 no.2
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• pp.245-273
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• 2015

The purpose of this study is to investigate environmental factors that affect mathematics learning of students in multicultural families. For this study, as study subjects, eight elementary school students and one middle school student, who were born and grew up in multicultural families in Korea due to international marriage of Korean father and foreign mother, and their five mothers were selected. To examine factors affecting mathematics learning and interests of students in multicultural families, relationships with parents, friends, and teachers were surveyed, and mathematics attitude test was performed. After conducting one on one interview based on collected questionnaires and results of the attitude test, qualitative data analysis was performed. As a result of survey and interview, positive factors affecting mathematics learning of students in multicultural families included arousing interest in mathematics through mother's mathematics teaching in her mother language and direct teaching, good peer relation, teacher's compliment and encouragement, and lowering the burden of language in accordance with characteristics of mathematics course.

• Hwankyungkyoyuk
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• v.12 no.1
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• pp.76-98
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• 1999

As an attempt to systematize the environmental education in schools according to the 7th curriculum, this study extracted the contents of environmental education to which Social Studies Education can approach in the social studies lessons. This study analyzed these contents from the goals of environmental education and from its contents and, as a result, it found out the following: (1) in the aspect of ‘knowledge’ and ‘skills’, Social Studies and the goals of environmental education have direct relations with each other, and (2) Social Studies can be taught in the aspect of ‘environmental pollution’, ‘environmental preservation ＆ alternative’ ,‘human environment’, ‘population’, ‘inderstrialization & urbanization, ‘resources’, and so on. By utilizing various teaching and learning methods of Socal studies education, We can approach the goals of environmental education: ‘attitudes’ and ‘participation’. We think that ‘problem solving ability’ is main teaching method” in Socal Studies.