• Journal for History of Mathematics
• /
• v.31 no.2
• /
• pp.73-91
• /
• 2018

This study begins with the awareness of problem that the education of mathematics teachers has failed to link the limit and the infinite set conceptually. Thus, this study analyzes the historical and reciprocal development of the limit and the infinite set, and discusses how to improve the education of these concepts and their relation based on the outcome of this analysis. The results of the study confirm that the infinite set is the historical tool of linking the limit and the real numbers. Also, the result shows that the premise of 'the component of the straight line is a point.' had the fundamental role in the construction of the real numbers as an arithmetical continuum and that the moral certainty of this premise would be obtained through a thought experiment using an infinite set. Based on these findings, several proposals have been made regarding the teacher education of awakening someone to the fact that 'the theoretical foundation of the limit is the real numbers, and it is required to introduce an infinite set for dealing with the real numbers.' in this study. In particular, by presenting one method of constructing the real numbers as an arithmetical continuum based on a thought experiment about the component of the straight line, this study opens up the possibility of an education that could get the limit values psychologically connected to the infinite set in overcoming the epistemological obstacle related to the continuum concept.

• Journal of the Korean housing association
• /
• v.24 no.6
• /
• pp.9-18
• /
• 2013

Recently, interest and social expectation for children's environment are on the rise. The needs for construction of safe and pleasant child care environment has bees agreed with. Especially, as the number of children who are wanted to go center jumped with additional support the government for child care business, centers have also seen a boost. But as number of child care centers increases rapidly in short period, the quality of centers is more inferior to before. and the space and facility level of many centers don't reach in legal minimum standard. In addition to, when child care centers are reviewed, it tend to be judged by one standard without considering connection with sense of values about child care or philosophy, child's traits, surrounding environment etc. Therefore, it is important to construct environment that can consider children's physical development and behavioral characteristic as well as basic element such thing as protection and support activity for current child care centers. This study presupposes that physical environment of child care centers makes important effect on teacher's motion and child's development, then it is to investigate it's characteristics in physically space, facilities, outdoor playground. And It is to identify space and accommodations, outdoors facilities which can support activity smoothly inside and outside. As a result, it is try to offer appliable basic information about the child-friendly environment of child care centers.

• Journal of Fisheries and Marine Sciences Education
• /
• v.20 no.2
• /
• pp.184-200
• /
• 2008

The purpose of this paper is to develop instructional activity support model for capstone design in order for improving creative engineering education. To do this, having extracted the core idea of capstone design, and elicited core learning activity process, and grasped core supportive factors according to each core learning activity process that elicited, an improved instructional design model for capstone design was then developed through formative evaluation with respect to the draft of the instructional system development model for capstone design. As to major research methods, case analysis, requirements analysis through interview, and formative evaluation by experts were employed, and then research studies were undertaken. The formative evaluation by experts was carried out for two hours in 2007, and the experts participated in the evaluation consisted of total 6 persons: two specialists of capstone design contents, two professionals in field works, and two expert instructional designers in education engineering. Interview results had been reflected in this research when developing final instructional design model for capstone design. The core learning activity process of the final instructional design model for caption design, which developed in this research, comprises following stages: (1) Team building $\rightarrow$ (2) Integrated meeting between industry and academy $\rightarrow$ (3) Analysis of tasks $\rightarrow$ (4) Clarification of tasks $\rightarrow$(5) Seeking solutions for issues $\rightarrow$ (6) Eliciting priority of solutions $\rightarrow$ (7) Designing solutions and construction $\rightarrow$ (8) Exhibiting outcomes and presentation $\rightarrow$(9) Gaining comprehensive insights Also, in the core learning activity process, supportive factors that support implementation of each step were presented having been categorized into facilitator (teacher, and professionals in field works), learner and tool, etc.

• Journal of Educational Research in Mathematics
• /
• v.22 no.4
• /
• pp.445-458
• /
• 2012

Current textbooks may provide students and teachers with three improper notions related to the quotient and the remainder in division for decimal numbers as in the following. First, only the calculated results in (natural numbers)${\div}$(natural numbers) is the quotient. Second, when the quotient and the remainder are obtained in division for decimal numbers, the quotient is natural number and the remainder is unique. Third, only when the quotient cannot be divided exactly, the quotient can be rounded off. These can affect students and teachers on their notions of division for decimal numbers, so improvements are needed for to break it. For these improvements, the following measures are required. First, in the curriculum guidebook, the meaning of the quotient and the remainder in division for decimal numbers should be presented clearly, for preventing the possibility of the construction of such improper notions. Second, examples, problems, and the like should be presented in the textbooks enough to break such improper notions. Third, the didactical intention should be presented clearly with respect to the quotient and the remainder in division for decimal numbers in teacher's manual.

• Korean Journal of Human Ecology
• /
• v.15 no.2
• /
• pp.209-225
• /
• 2006

The purpose of this study is to research the actual condition of environment and management of outdoor play at child care centers in Seoul, and to present a planning guideline for outdoor play environment. For this purpose, data were collected by a structured questionnaire and subjects were 164 directors of child care centers located in Seoul. The contents of the questionnaire were composed of general facts about the respondent and facility, environmental condition, managerial condition, and director's understanding about outdoor play. The data were then analyzed using the frequency, percentage, mean and crosstab. The major results have shown the following: 1) Most child care centers in Seoul had some space for outdoor play. 62% of them used front yard and 11 % a rooftop. 2) The space usually included fixed play instruments such as slide and complex unit structures, sand play area, and open area. It also had many natural elements as shrubs and earth. 3) 78% of the centers had a schedule for outdoor play. The schedule operates flexibly according to each center's own day schedule. Generally, a time for outdoor play was 21 to 30 minutes. 4) The directors of child care centers thought highly of outdoor play for it contributes to the balanced development of children. They answered that equipments and spaces, program devices, and teacher's understanding are some of the important factors for active outdoor play. 5) Most of them wanted wood-working area (construction activity area), water play area, and cages.

• Archives of design research
• /
• v.14
• /
• pp.209-219
• /
• 1996

The BAUHAUS started as the purpose of training the people who are designers in the industnal society or who have artistic talent as architect, handicraftman, sculptor, and in the construction, it was based for entire organizational training for every handicrafts in the aspect of the art and form. The preliminary course that became the generative power of the human training that have possessed creativity was studied and put in to practice through the formative activity of dIverse form and method according to the educational idea and the educational method of the teachers who are in charge of such edudation, and common access method that forms the fundamental basis was centered not only human being as a formative principle, and analyzed thoroughly with biological function and further until mental and philosophical part but served and thought synthetically and took principal objects at the formative practice. Together with this, the characteristic structure of the BA UHA US's formative education was taking the grouptherapy educational method where there was not distinguish teacher and student and through the liberal criticism and they realize by experience themselves that how to solve the certain subject and pursue the form by compare each other's solutions.

• Communications of Mathematical Education
• /
• v.32 no.1
• /
• pp.1-22
• /
• 2018

The purpose of the study was to examine the effects of mentoring experience in STEAM classes on pre-service mathematics teachers' teaching competency for STEAM education. The study was conducted with 23 pre-service mathematics teachers who participated in the mentoring program affiliated with free learning semester system during one semester. To investigate the changes of pre-service mathematics teachers' teaching competencies for STEAM education and the effects of the mentoring program, pre, post questionnaires, lesson journals, and whole group discussion data were collected. According to the results, pre-service mathematics teachers' competencies for 'knowledge of STEAM education', 'subject matter knowledge', 'teaching and learning methods', and 'learning environments and circumstances' categories were improved significantly after the mentoring program. Especially, some results indicated that pre-service mathematics teachers' teaching experiences in real STEAM classrooms were very helpful for the development of understandings of STEAM education and construction of practical knowledge.

• Journal of Educational Research in Mathematics
• /
• v.16 no.4
• /
• pp.327-344
• /
• 2006

This study examined the proof levels and understanding of constituents of proving by three mathematically gifted 6th grade korean students, who belonged to the highest 1% in elementary school, through observation and interviews on the problem-solving process in relation to constructing a rectangle of which area equals the sum of two other rectangles. We assigned the students with Clairaut's geometric problems and analyzed their proof levels and their difficulties in thinking related to the understanding of constituents of proving. Analysis of data was made based on the proof level suggested by Waring (2000) and the constituents of proving presented by Galbraith(1981), Dreyfus & Hadas(1987), Seo(1999). As a result, we found out that the students recognized the meaning and necessity of proof, and they peformed some geometric proofs if only they had teacher's proper intervention.

• Hwankyungkyoyuk
• /
• v.11 no.2
• /
• pp.224-237
• /
• 1998

The purpose of this study that was based on the theory review about the practical use necessity of school landscape was to survey on the awareness of elementary school teachers about the applications of school landscape for environmental education. This study was carried out through the review of literature, the questionnaire to 132 elementary school teachers in Seongnam City. The findings derived from this study were as follows : First, School landscape is an important field as environmental education resource for the improvement of school environmental education. Especially, for the improvement of environmental sensitivity through field-experience learning, the practical applications of elementary school landscape is very important and urgent in aspects of environmental education theory, accessibility, and convenience. Second, Most of responded teachers give an affirmative answer about the field-experience learning for school environmental education and the necessity of practical use of school landscape for field-experience learning. Several the improvement to use elementary school landscape for environmental education being suggested by teachers are the increase of financial support, the magnification of school area, and the school landscape planning and design in consideration of environmental education by landscape architect expert. Third, Above half of teachers don't agree to use the roof garden for environmental education because of the safety of students and the school building construction. Fourth, Teachers are more satisfied with the status of school landscape maintenance than the practical usability of school landscape in aspect of environmental education and the facilities in school landscape. Teachers think that the most important functions and roles of school landscape is psychological factor.

• Journal of the Korean Home Economics Association
• /
• v.50 no.8
• /
• pp.79-95
• /
• 2012

The purpose of this study is to seek improvement in clothing life education through a development and application of the clothing life education program for middle schools based on the education and experience in arts & culture. On the basis of art & culture education as well as, Dewey's experience, the clothing life area education program was designed and developed for the 2nd year students in the middle school. This program was applied to 350 students of 9 2nd year classes in M middle school during the 17 periods of clothing life area classes, beginning from May 23rd, 2011 and lasting to September 30th, 2011. The leaner-evaluation was performed in terms of the level of learning interest and academic achievement. To measure the level of academic achievement, a mind-map evaluation was performed and a learning effect survey, which evaluates the level of achievement of learning objectives, was carried out. For the purpose of class observation, classes were filmed and analyzed. Characteristics of a class were recorded on a teacher's diary and was used to support the qualitative evaluation. According to the results, the education program is analyzed as being helpful and useful in student understanding of fiber, textile and, clothes, which are materials and outcomes of culture and art; moreover, they have a historical, cultural and artistic value in themselves. It is also analyzed as being helpful for the development of student aesthetic sensibility and emotion, for the construction of meaningful experience through a learning process, for the improvement of learning interest and the level of academic achievement, and for the positive recognition of the learning effect.