• Journal for History of Mathematics
• /
• v.17 no.3
• /
• pp.109-120
• /
• 2004

This study investigated three pre-service teachers' mathematical problem solving among hand-in-write-ups and final projects for each subject. All participants' activities and computer explorations were observed and video taped. If it was possible, an open-ended individual interview was performed before, during, and after each exploration. The method of data collection was observation, interviewing, field notes, students' written assignments, computer works, and audio and videotapes of pre- service teachers' mathematical problem solving activities. At the beginning of the mathematical problem solving activities, all participants did not have strong procedural and conceptual knowledge of the graph, making a model by using data, and general concept of a sine function, but they built strong procedural and conceptual knowledge and connected them appropriately through mathematical problem solving activities by using the computer technology.

• Journal of the Korean earth science society
• /
• v.25 no.8
• /
• pp.647-655
• /
• 2004

PISA (Program for International Student Assessment) 2003, the second cycle of PISA, collected data with respect to students' cross-disciplinary problem solving capabilities. Problem solving is defined as the ability to use cognitive processes to solve real cross-disciplinary problems. For the purpose of PISA 2003 assessment, three problem types were chosen: Decision Making, System Analysis and Design, and Trouble Shooting. For this paper a preliminary analysis on Korean students' responses to the PISA 2003 problem-solving items was conducted. The quantitative analysis mainly focused on the difficulties of the PISA 2003 items, while the quantitative analysis dealt with students' responses to open-ended items, which helped understand Korean students' cognitive style and reasoning processes. According to the item analysis result, Korean students had difficulty in representing their answers with pictures or graphs, and interpreting long and complex text. They also showed low achievement with relatively unfamiliar topics or tasks. The paper concluded with several suggestions on improve the quality of science education.

• Proceedings of the Korea Society for Industrial Systems Conference
• /
• 2009.05a
• /
• pp.101-106
• /
• 2009

수학적 사고의 입장에서 중등학생들이 수학적 문제해결에 논리적 사고와 직관적 사고가 어떻게 작용하는지를 연구하는 것은 수학교육에서 중요하고도 흥미로운 과제의 하나이다. 본 연구의 주된 목적은 중등학교 영재학생을 대상으로 이러한 문제를 조사하는 것이다. 특히 이들 중등영재학생들의 논리적 사고와 직관적 사고에 대한 선호도와 논리적 문제의 문제해결능력 사이의 관계를 조사한다.

• Journal of The Korean Association For Science Education
• /
• v.33 no.1
• /
• pp.114-131
• /
• 2013

In this study, FAISC (Family Activity for Improving Scientific Creativity) program was developed and applied to 12 families. FAISC consists of 12 tasks and 12 evaluation papers. Family participants conducted the task individually and evaluated their performance results through discussion and agreement. From the participants' responses, it was found that FAISC tasks were fun but weakly difficult. Participants responded that Guide 1 (Creative thinking methods) and Guide 2 (Related knowledge) were helpful in their performance, and their scientific creativity was enhanced. From the analysis of interview and video recording of participants' behaviors, various positive aspects were observed. Especially on cognitive aspects, harmonious and pleasant family activities were observed. Negative aspects observed in interview and video gave us a practical guide for more effective performance in further application. Finally, according to comparison of evaluation results by family and professionals, the correlation between them was .901. Therefore, we conclude that evaluation of creative activity by family is highly confidential.

• School Mathematics
• /
• v.18 no.3
• /
• pp.457-478
• /
• 2016

The purpose of this study is to investigate middle school students' understanding and development of function graphs. We collected the data from the teaching experiment with two middle school students who had not yet received instruction on linear function in school. The students participated in a 15-day teaching experiment(Steffe, & Thompson, 2000). Each teaching episode lasted one or two hours. The students initially focused on numerical values rather than the overall relationship between the variables in functional situations. This study described meaning, role of and students' responses for the given tasks, which revealed the students' understanding and development of function graphs. Especially we analyzed students' responses based on their methods to solve the tasks, reasoning that derived from those methods, and their solutions. The results indicate that their continuous reasoning played a significant role in their understanding of function graphs.

• Journal of Information Management
• /
• v.41 no.4
• /
• pp.93-118
• /
• 2010

This study was aimed to establish a workable strategies to operate KESLI consortium reliably. To encourage the research purposes, it was mainly investigated international literature on current challenges for the e-journals consortium in comparison with the domestic implications. Major issues and challenges are divided to six items by scholarly communication changes and e-journals percentage increase, a big deal for a contract -based consortium pricing model in vogue, a consortium of the price hikes and making budget difficulties, use the standard statistics by the results of the use, archiving and archive security uncertainty, and contracts public availability of such external conditions. As a result, the international challenges of E-journals consortium was similar to KESLI, but the depth of information and research on domestic was weaker than the international research. To see more research and a rational perception based on scientific evidence and alternatives that enable KESLI working in the field was needed to be.

• Proceedings of the Korean Society for Quality Management Conference
• /
• 2007.04a
• /
• pp.209-214
• /
• 2007

본 연구에서는 정부부처에서 진행된 혁신과제에 근거하여 Inno-TRIZ(혁신 TRIZ) 모형을 개발하였다. 혁신의 목표 혁신가치, 모순 혁신가치, 해결원리 등을 도출하기 위해서 50개 부처의 실제 사례분석을 실시하였다. 여기서는 연구결과로 나타난 Inno-TRIZ모형과 적용방법에 대해서 소개한다.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2001.11a
• /
• pp.177-181
• /
• 2001

본 논문에서는 칼라차 영상을 이용하여 물체들의 움직임을 분석하고 이동 형태들의 대한 RGB 특징 값을 추출하였으며 그 동안 미해결 과제로 남았던 이동 물체들 사이의 영역정합(matching)과 군집화 (clustering)를 이용하여 대응(Correspondence)관계를 확인하는 문제를 해결하여 이동 물체들을 추구하여 보았다.

• 주택과사람들
• /
• s.205
• /
• pp.40-45
• /
• 2007

삭막한 도시를 떠나 천혜의 자연을 누리며 전원주택에 살고자 하는 바람은 누구나 있다. 하지만 실제의 전원생활은 녹록지 않다. 계절마다 달라져야 하는 주택관리와 보완 등 입주민 스스로 해결해 나가야 하는 과제가 많은 것이 현실이다. 최근 몇몇 건설업계에서는 분양가상한제의 대응책 일환으로 이러한 문제점을 해결한 단독주택 단지를 개발하고 있다.

• School Mathematics
• /
• v.16 no.3
• /
• pp.445-469
• /
• 2014

This study aims to examine secondary mathematics teachers' understanding of the levels of cognitive demand on mathematical tasks suggested in mathematics textbooks. The study also attempts to investigate whether the teachers are able to characterize the tasks accordingly and to change low level tasks to high level ones. For this purpose, we developed a survey and 50 secondary mathematics teachers participated in the survey. The findings from the data analysis suggest that 59 percent of the teachers selected high level tasks as appropriate for achieving the national curricular goals, but about 1/3 of the teachers identified PNC tasks as high level ones. The results also reveal that more than half of the teachers were not able to transform low level into high level tasks and only 4 teachers out of 50 were able to transform successfully. The teachers seem to find difficulty in transforming low level tasks into high level ones.