• Human Ecology Research
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• 제54권4호
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• pp.351-363
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• 2016

This study examined in depth what teachers experience in a practical problem-based home economics class. This study established the research question, "What do teachers experience in the practical problem-based home economics class?" and selected three teacher participants who had steadily performed a practical problem-based home economics class to directly observe classes and conducted intensive interviews with the class performing teachers. The three research participants performed the practical problem-based class as a method of practicing their educational beliefs and based on a problem consciousness that textbook centered classes focusing on concepts cannot manage. They also tried to make efforts to reconstruct the textbook centered with practical problems to promote the critical thinking abilities of students. In practicing the practical problem-based class, the research participants recognized that it was important to show the present problems in reality to the students, teach broad value concepts, and establish rapport with students. They tried to make class content correspond to class evaluation. They felt awarded in how they influenced the development of students and the perception of home economics subjects in a positive way as well as experienced various actual difficulties in performing the practical problem-based class. The three research participants examined themselves through the agony and reflection of the class, and integrated the class with daily activities by applying problem solving methods of practical problem-based classes to their lives.

• 한국초등과학교육학회지:초등과학교육
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• 제28권4호
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• pp.382-389
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• 2009

The purpose of this study was to examine the instructional effect of problem-based learning on creative problem-solving skills and academic achievement in elementary science classes. Based on the literature review, six stages for problem-based learning were applied: Orientation, Presenting problems and the process of learning, preliminary problem solving, problem solving, sharing results, and wrapping up/evaluating. The subjects were 74 students in two six-grade classes in Gyeonggi province. As a result, the following findings were given: First, the students who were engaged in problem-based learning showed better progress in creative problem-solving skills. Second, science academic achievement of experimental group were better than traditional group. Educational implications were discussed.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제9권2호
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• pp.125-133
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• 2005

This paper investigates student conceptual understanding and application on algebra using problem-based curricula. Seven principles which National Research Council announced were considered because these seven principles all involved in the development of a deep conceptual understanding. A problem-based curriculum itself provides a significant contribution to improving student learning. A problem-based curriculum encourages students to obtain a more conceptual understanding in algebra. From the results the national curriculum developers in Korea consider the problem-based curriculum.

• 간호행정학회지
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• 제12권2호
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• pp.287-294
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• 2006

Purpose: The purpose of this study was to identify the change of critical thinking disposition and problem solving process in students who experienced problem-based learning. Method: This research design was one group pre-post test design. Twenty-five nursing students who participated in ‘'Nursing Process' course with two PBL packages for a semester in 2004 were the subjects of this study. The data were analyzed by repeated measures of ANOVA, and content analysis. Result: The problem defining in problem solving process was improved significantly, but there was no significant difference in the critical thinking disposition. Conclusion: The results of this study suggest that PBL has a positive effect on nursing students' problem solving process, But for a more significant effect on a continuous base for critical thinking of nursing students, faculties should use web based and simulation-based education for self directed learning along with clinical situation-based scenarios.

• International Journal of Contents
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• 제8권2호
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• pp.23-27
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• 2012

The successful use of digital textbooks (DTs) in schools requires the development of various teaching and learning methods that are appropriate for DTs. However, recent DT studies have focused mainly on the implementation of DT features and formats. The objective of this study was to investigate a problem-based learning instructional model appropriate to DTs and to present the experimental results using the problem-based DT to demonstrate its educational effectiveness. Two learning-achievements tests were conducted to analyze the learning experience and effectiveness of the problem-based DT after it had been used in a high school for a certain period. The experimental results indicated that the students who used the DT, especially lower-level students, exhibited improved problem-solving ability and demonstrated a better practical understanding of the subject than students who used printed textbooks.

• Educational Technology International
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• 제14권2호
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• pp.137-166
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• 2013

Problem-based learning (PBL) in engineering education has been implemented in various ways. The wide range of PBL methods sometimes creates difficulties in implementing PBL. The purpose of this study was to identify the major variables that a teacher considers in PBL designs for an engineering course and suggest specific PBL methods according to the PBL design variables. This study was conducted using a review research method involving 21 studies from a range of engineering education fields. The results showed that the major variables that engineering professors need to consider when applying PBL are the authenticity of the PBL problem and the method of providing knowledge or information that the learners must know to solve the given problem. Based on the two variables identified, the following four types of PBL methods for engineering education are suggested: 1) lecture-based problem, 2) guided problem-based learning, 3) problem-based learning and 4) co-op problem-based learning.

• 한국컴퓨터정보학회논문지
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• 제20권9호
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• pp.21-29
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• 2015

The set partitioning problem is a well-known NP-hard combinatorial optimization problem, and it is formulated as an integer programming model. This paper proposes an Integer Programming-based Local Search for solving the set partitioning problem. The key point is to solve the set partitioning problem as the set covering problem. First, an initial solution is generated by a simple heuristic for the set covering problem, and then the solution is set as the current solution. Next, the following process is repeated. The original set covering problem is reduced based on the current solution, and the reduced problem is solved by Integer Programming which includes a specific element in the objective function to derive the solution for the set partitioning problem. Experimental results on a set of OR-Library instances show that the proposed algorithm outperforms pure integer programming as well as the existing heuristic algorithms both in solution quality and time.

• 대한수학교육학회지:학교수학
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• 제11권4호
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• pp.665-683
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• 2009

본 연구는 문제해결력을 증진시키기 위한 방안으로 상황을 제시한 후 W(상황표현하기)-Q(문제 만들기)-A(답하기)에 의한 단계별 활동을 하여 그 효과성을 알아보았다. 이 방법을 2학년에게 한 학기동안 20차시를 적용한 결과 문제해결력은 향상된 것으로 나타났고, 태도에서는 융통성은 향상되었고 나머지 영역은 유의미한 차이는 없었지만 전반적으로 평균이 높아진 것을 확인할 수 있었다. 따라서 WQA 문제만들기 활동은 아동의 문제해결력을 증진시키고 태도를 개선하는 좋은 방법임을 알 수 있었다.

• 대한수학교육학회지:학교수학
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• 제11권1호
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• pp.165-186
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• 2009

학습자가 학습에 대한 흥미를 가지고 생활 주변의 문제를 자기 주도적으로 해결하고 그 과정을 통해 학습하게 되는 것은 매우 중요하다. 문제중심학습은 학습자가 수업에 자발적으로 참여하도록 하며 협동 학습을 강조하여 이를 통해 학습자의 수학적 사고능력 및 지식의 확장과 창의적 문제 해결능력을 향상시킬 수 있는 교수 학습 방법이다. 본 연구에서는 문제중심학습의 학교수학 적용을 위하여 문제개발의 중요성을 인식하여 문제중심학습의 문제가 갖추어야 할 특징을 파악하고, 이를 바탕으로 수학과 문제중심학습 문제 분석 기준표를 개발하였다. 또한 이를 이용하여 다양한 문제들을 분석 해봄으로써 수학과 문제중심학습에 적합한 문제를 선별하고 문제개발의 방향을 제시하고자 하였다.

• 대한지구과학교육학회지
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• 제5권1호
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• pp.75-87
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• 2012

The purpose of this study is to find out the effects of internet resource-based problem-based learning on the academic achievement in science and the attitude toward science of elementary school students. One experiment class and one control class of grade 6 students were selected to perform a prior investigation on the academic achievement in science and the attitude toward science, then the experiment class attended 4 weeks of lessons that was applied the internet resource-based problem-based learning, and the control class attended the traditional lessons based on the guidelines of teachers. After conducting lessons, a post investigation was performed for each class and the results were analyzed to produce the following conclusions. First, the internet resource-based problem-based learning could be seen to be effective in improving the students' academic achievements in science. The internet resource-based problem-based learning seemed to make students recognize the lesson details better and grasp well the questions given during lessons from the process of finding solutions among many informations and data on the internet. Second, the internet resource-based problem-based learning had a positive effect on all attitudes' areas toward science of students. It looked like that the internet resource-based problem-based learning taught the students to use the internet resources and gave them a friendly feeling, so the children could actively participate in class and had positive recognition on science. Third, from teacher observation and the result of the student recognition investigation, we could know that the students showed lots of interests in the internet resource-based problem-based learning, and they were able to understand the scientific theories in the process of solving problems that were relevant to real life, and thought science in a positive way.