• 대한수학교육학회지:수학교육학연구
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• 제8권2호
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• pp.709-722
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• 1998

This thesis is to see if the classes using problem posing is effective to improve the students' grades in math. So I set up research subjects as follow. 1. Do the classes focused on problem posing have any influence on the students' achievement\ulcorner 2. Do the classes focused on problem posing have any different influence on the students' achievement according to their levels\ulcorner 3. Do the classes focused on problem posing have any different influence on the students' achievement according to the categories in math\ulcorner I close four classes in the first grade of K middle school in Kangnung, Kangwon province for this thesis. First I divided them into two groups. Each group consisted of two classes. One is the experimental group. The other is the comparative group. The experimental group was taken classes using problem posing. The comparative group was taken classes by the traditional teaching method. And then I analyzed the difference of the achievement between two groups. As a result of this research, I came to the conclusion as follow. First, the classes focused on problem posing is more effective than traditional teaching method for the improvement of the students` achievement Second, both the classes using problem posing and the traditional teaching method doesn`t affect to the advanced students. Third, the classes using problem posing is more effective to the intermediate students and lower level students than the traditional teaching method. Especially it is very effective in teaching the students the linear equation.

• 한국초등수학교육학회지
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• 제14권1호
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• pp.43-64
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• 2010

이 연구는 초등학교 3학년 학생의 수학 학습 능력 즉, 확고한 개념 형성 및 수학하는 힘의 신장과 창의력 육성을 목표로 하였다. 이러한 목표를 달성하기 위하여, 본 연구자는 2009년 1학기 동안 초등학교 3학년을 대상으로 [교과서의 내용 학습]$\rightarrow$[1차 문제 만들기]$\rightarrow$[문제 해결]$\rightarrow$[발전 문제 만들기]의 수업 모형으로, 연속 2시간의 연차시 수학 수업을 16회 실시하였다. 그 중에서 사칙계산을 중심으로 한 8회분의 학생이 만든 문제, 즉 [1차 문제 만들기]와 [발전 문제 만들기]를, 문제의 완성도 및 유창성, 유연성, 개념의 정도, 독창성, 소재 등의 5가지 요소로 분석틀을 만들어 분석하였다. 학생들은 1차 문제 만들기에서 문제의 완성도와 유창성은 더 나았고, 나눗셈과 곱셈으로 수업을 지속할수록 유연성은 점차 좋아졌다. 비교반을 설정하여 1학기 초와 말의 학업 성취도의 정도를 실험반과 비교한 결과 실험반의 학업성취도가 비교반 보다 높게 나타났다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제23권1호
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• pp.109-128
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• 2009

2006년에 발표된 7차 수학과 개정시안의 교수학습활동에서는 더욱 확장된 문제해결능력과 창의적 사고로 나아가도록 문제 만들기 활동을 포함하였다. 본 연구는 Polya의 문제 만들기 전략에 따른 문제 만들기 수업을 통해 학생의 문제해결 과정을 이해하고 효과적인 교수 학습을 논의하고자 하였다. 학생의 학습과정을 조사하는 것이므로 정성연구방법을 선택하여 중학교 방정식 내용을 중심으로 5차시에 걸친 문제 만들기 활동을 구성하여 중학교 2명의 협력학습과정을 관찰 면담을 실시하였다. 연구결과로는 첫째, 문제해결에서 주어진 것과 구하려는 것을 알고 관계식을 세워서 알고 있는 수학적 지식을 바탕으로 풀이하는 과정에서 수학성적이 우수한 학생은 문제구조를 잘 파악하고 유사한 문제 또는 새로운 문제를 만들 때 자유롭게 변인을 구성하였는데 이렇게 문제의 외적구조를 정확히 파악한 배경에는 문제의 내적 구조와 관련깊은 대수적 사고가 잘 형성된 결과임을 알 수 있었다. 둘째, 문제를 해결할 때 주어진 것과 구하려는 것의 각각의 변인을 바꾸거나 첨가하여 새로운 문제를 구성할 때 학생들은 자신이 해결한 문제를 다시 보게 되어서 반성적 사고를 이끌어 낼 수 있는 기회가 되었다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제17권2호
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• pp.119-131
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• 2013

It is the first time that there is a subject, advanced mathematics in the 2009 revised high school curriculum. Therefore it is posing a challenge to the teachers who are teaching it. At the advanced level, it is important for learners to reflect on their mental mathematical activities. This research analysed pre-service secondary teachers' reflective thinking in solving the tasks specific for the teaching and learning of polar coordinates. We report how and through what process mathematical tasks that can create disequilibrium for pre-service secondary teachers enable reflective thinking and expand preservice secondary teachers' thoughts and recognition of defining reflective thinking in looking back on one's problem solving and thinking processes.

• 대한수학교육학회지:학교수학
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• 제11권2호
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• pp.207-225
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• 2009

수학영재의 지적 욕구를 충족시키고 창의성을 신장시키는 문제해결 중심의 수업활동을 하기 위해서는 수학영재의 수준에 맞게 만들어진 문제가 필수적이다. 본 논문의 목적은 수학영재 지도교사의 교수 능력을 신장시키기 위한 심화 연수 과정의 일부인 원격 연수에 참여한 수학영재 지도교사가 만든 문제의 형태를 문제 접근 방법에 따라 '익숙한 문제', '익숙하지 않은 문제', '오류가 있는 문제'로 나누어 분석하여 수학영재 지도교사를 위한 원격 연수에서 교사의 문제만들기에 대한 실천적 방안을 제시하는데 있다.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.511-517
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• 2022

Recently, due to rapid climate change, the population of honey bees has decreased, posing a great threat to the existence of the Earth's ecosystem. In particular, the colony collapse phenomenon in which bees disappeared nationwide in early 2022 had devastating consequences for beekeepers. In order to solve the problems of beekeeping due to climate change, it is urgent to develop a system that can monitor the situation inside the hive through various IoT sensors. This paper develops a system that can measure the activity of bees inside the hive and uses it to measure the number of times of entry and exit of the hive. The data measured by the developed system can be monitored in real time on a smartphone through the cloud server. The system developed in this paper can monitor the ecology of bees according to climate change and measure internal and external bee activities. Using this method, it is possible to check in advance for the colony collapse phenomenon in which bees disappeared in early 2022. This is very meaningful in that it presents an alternative that can identify the cause of the problem through early detection.

• 대한간호학회지
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• 제24권2호
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• pp.190-205
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• 1994

Respect for human life and respect for human dignity are two basic values to which organized nursing has urged its members to adhere in their service to mankind. Thus it is the nurses’ duty to provide health care in support of sustenance of life and to pay respect for the patient’s right to dignity. In practice, however, nurses may experience dilemmas between these duties much due to the de velopment of modern advanced techniques. These dilemmas have become more complex and difficult to resolve. Nurses are often faced with situations in which the terminally ill refuse professional care, posing serious conflicts between respect for human life and respect for human rights to self-determination. In such cases, resolution of the problem is not a simple matter, thus requires intensive study into the ethical questions related to the situation. The purpose of this study was to identify ethical problems that nurses experience in caring for terminally ill patients and explore the ways to the resolution of problems within the context of the situations. The methodology used for the study was a case study method which ‘New Casuistry’ proposed by Jonsen & Toulmin(1988) and the ‘Specified Principlism’ proposed by Degrazia(1992) as an alternative to old deductive and intuitive method. Cases were developed through semistructured indepth interviews according to the casutistry method. A total of seven nurses were interviewd who were caring for therminally ill patients. Four cases out of a total 14 cases were related to the topic. Through the case analysis it became evident that nurses appreciated other values more often than respect for the patient’s right to self-determination. These other values were convenience and efficiency in nursing practice in case 1, preservation of life above all other values in case 2, provision of nursing care to fulfill the nurse’s professional obligation at most in case 3, and respect for the family’s demand against the patient’s wish in case 4. This study showed that the most important ethical problems were conflict between respect for the patient’s right to self-determination and sustenance of life for the fulfillment of professional obligation. For this problem, benefit /burden analysis from the perspective of the patient and family for the promotion of patient’s wellbeing may be a way to resolve the conflict. Further, through these analysis it was shown that physicians’ and families’ opinions dominated in the decision - making and the opinions of nurses’ and patients’ tended not to be reflected. Thus the patient's right to his or her care was not readily respected. To solve this problem. nurses should make efforts to communicate reciprocally with their patients, family members and physicians in an effort to respect for their patient’s rights to life and diginity from the point of view and values of the patient. It is also important that nurses provide good basic nursing care up to the time of death regardless of decisions about providing or not aggressive treat-ment for chronically and terminally ill patients.