과학사에 근거한 진화개념검사도구의 타당도 확인 및 맥락에 따른 진화개념 발달 탐색

하민수 ( Minsu Ha ) 한국과학교육학회 2016 한국과학교육학회지 Vol.36 No.3

학생들의 진화에 대한 대안개념(목적론, 용불용설 등)이 과학사에서 나타나는 설명의 발전 형태와 유사하다는 연구는 있었다. 하지만 과학사적으로 설명의 발달과정을 반영하여 부분점수를 주는 평가방 식은 활용되지 않았다. 이 연구의 목적은 창조론에서 자연선택까지 과학사적 발달과정을 반영하여 부분점수를 주는 방법을 제안하고 이방법이 타당한지에 대한 양적인 증거를 수집하는 것이다. 이 연구는 과학사에 근거하여 진화개념검사도구의 학생응답을 순위선다형점수로 변환하고 부분채점모형의 라쉬모델분석을 포함한 통계적 방법으로 새로운 평가방식이 타당한지 확인하였다. 또한 개념발달이 인간, 동물, 문항의 상황에 따라 다른지 확인하였다. Ha(2007)가 개발한 검사도구를 활용하여 1711명의 초, 중, 고등학생과 비전공, 전공생물 교사를 대상으로 생성한 자료를 통하여 분석하였다. 창조론, 목적, 의도, 용불용설, 자연선택에 0점에서 4점씩 부분점수로 제시한 평가 방법은 Cronbach alpha를 통한 내적일관성 신뢰도, 라쉬분석의 MNSQ값 등 통한 문항적합도를 확인한 결과 타당한 것으로 확인되었 다. 초등학생과 중학생들의 개념수준은 의도에서 용불용설 단계에, 고등학생부터 용불용설 이후의 단계로 개념발달이 이루어지고 있었 다. 진화설명의 발달 과정은 인간, 동물, 식물에 따라 차이가 나타남을 확인할 수 있었다. 이 연구는 과학사와 학생들의 개념발달이 유사하 다는 기존의 주장에 새로운 양적증거를 추가하고, 진화개념 평가를 위한 새로운 분석방법을 제안한다. Previous studies have investigated the similarity between the development of evolutionary explanations and students` conceptual developments on evolution. However, the validity and reliability of the assessment method reflecting the similarity have not been quantitatively examined yet. In addition, no study has examined the conceptual progressions of evolution concept based on contexts although literature has addressed the contextual difference of evolutionary explanation in the history of science. This study examined the validity and reliability of history-of-science-based evolution concept assessment using ordered multiple choice (OMC) methods and Rasch analysis and explored conceptual progression by three contexts (e.g., human, animal, and plant). The evolution concept assessment developed by Ha (2007) was used to examine 1711 elementary, middle, and high school students, and pre- and in-service science teachers` (biology majors and non-majors) evolution concepts. Internal consistency reliability and item response fitness of the OMC method that provide 0- to 4-point scores to creationism, teleology, intentionality, use/disuse, and natural selection respectively met the benchmark based on the Cronbach alpha and MNSQ indices of Rasch analysis. The level of elementary and middle school students` evolution concepts were located between intentionality and use/disuse while the level of high school and non-biology science teachers` evolution concepts were located between use/disuse and natural selection. The conceptual progressions of evolution concepts were differentiated according to three contexts. This study provided the quantitative evidence for the similarity between the development of evolutionary explanations and students` conceptual developments on evolution and suggest new analysis methods (i.e., OMC) of evolution concept assessment.

진화개념의 역사에 근거한 한국과 미국 대학생의 진화개념 수준 비교

하민수,Ha, Minsu 한국과학교육학회 2017 한국과학교육학회지 Vol.37 No.4

이 연구는 진화 개념의 발달 단계가 전공과 국가에 따라서 유의미한 차이가 있는지 확인하기 위하여 진행되었다. 이 연구를 위하여 한국과 미국의 대학생의 자료를 생물 전공과 비생물 전공에 따라 구분하여 수집하였다. Ha(2007)이 개발한 도구를 사용하여 Ha(2016)의 분석방법에 근거하여 순위선다형으로 분석하였다. 연구 결과 진화적 사고의 과학사적 발달 과정(창조, 목적, 의도, 용불용설, 자연선택)을 토대로 순위선다방식으로 분석하는 방법이 한국과 미국, 전공과 비전공 학생에게도 적합하게 적용될 수 있는 방법임이 확인되었다. 진화 개념의 발달 단계를 확인한 결과 우리나라 대학생들은 용불용설 수준, 미국의 대학생들은 목적론적 설명 수준에 있는 것으로 확인되었다. 전공과 국가에 따른 진화 개념의 발달 수준은 진화 설명소재와 교호작용효과가 있는지 확인한 결과 유의미한 교호작용효과가 없는 것으로 확인되었다. 진화 개념의 발달 단계와 종교성은 유의미한 관련성이 있었다. 이 연구 결과들을 토대로 진화 개념의 발달 특성에 대해서 논의한다. This study was conducted to identify whether there is a significant difference in the developmental stages of the evolution concept depending on the major and the country. For this study, college students (both biology major and non-biology major) in Korea and the United States answered evolution concept assessment developed by Ha (2007). The data were analyzed based on the method of developed by Ha (2016). As a result of this study, Cronbach alpha for internal consistency reliability and MNSQ indices for item response fitness of the ordered multiple choice method providing 0 to 4 point scores to creationism, teleology, intentionality, use/disuse, and natural selection respectively, satisfied the benchmark. The level of Korean college students' evolution concepts was located in use/disuse and the level of USA college students' evolution concepts was located in teleology. No interaction effect was found between the difference of conceptual progressions of evolution concept by major and country and evolution contexts (human, animal, and plant). There was a significant relationship between developmental stages of evolution concept and their religiosity. Based on the results of this study, we discuss developmental characteristics of evolutionary concepts.

A Case of Adenoid cystic carcinoma of right Lingual tonsil with pulmonary metastasis

( Minsu Ha ),( Sung Hwan Jeong ),( Sang Pyo Lee ),( Jung Woong Park ),( Yu Jin Kim ),( Seoung Youn Ha ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.-

The History of the Korean Science Curriculum and the Introduction of the Present 2015 Science Curriculum

Ha, Minsu 이화여자대학교 교과교육연구소 2017 교과교육학연구 Vol.21 No.3

The purpose of this study is to identify the history of the science curriculum in Korea and to review the science curriculum launched in 2015. Science has become an independent subject from the secondary curriculum for the purposes of developing Korean industry. The third curriculum was published by revising the second curriculum and adding an academic focus. The third curriculum was revised to create the fourth curriculum by introducing the notion of a human-centered curriculum, which is mainly influenced by the philosophy of human-centered and constructivist ideas. The sixth curriculum, and the curriculum that followed, addressed the confluence of science-technology-society (STS) as the main idea underpinning science education. In 2015, the Ministry of Education revised the curriculum by reflecting national and social needs in the school curriculum, with the aim of changing future society. The vision of the 2015 revised curriculum can be summarized as “cultivating the creative convergence competences required for future society” and “implementing interesting learning through improving the quality of learning experiences.” The 2015 science curriculum is divided into two parts: the common curriculum and the elective curriculum. In this paper, the details of the 2015 science curriculum are reviewed.

Pre-service Biology Teachers’ Mixed Model of Darwinism and Lamarckism

Minsu Ha 한국교원대학교 뇌기반교육연구소 2017 Brain, Digital, & Learning Vol.7 No.4

This study investigated pre-service teachers’ mixed idea on natural selection. Research analysis was carried out on specially designed questionnaires given to thirty-nine university fresh and sophomore pre-service teachers. Ten of these participants were also asked to partake in interviews aimed at collecting supplementary qualitative data. Study findings found that students held mixed evolutionary explanations like “natural selection with use/disuse.” Moreover, qualitative data gathered via interviews found students possessed strong Lamarckian views connected to natural selection rather than views connected to scientifically acceptable concepts. In line with the Lamarckian view, students consistently drew upon personal experience regarding individual variation by employing the “effect of use/disuse.” The compounding of evolution logic regarding evolution suggested that for study subjects the use and disuse hypothesis appeared to be quite similar to a phenomenological primitive (p-prim). Lastly, this research followed a constructivist teaching strategy to separate students’ Lamarckian views from natural selection.

Gastric angiodysplasia in a hereditary hemorrhagic telangiectasia type 2 patient.

Ha, Minsu,Kim, Yoon Jae,Kwon, Kwang An,Hahm, Ki Baik,Kim, Mi-Jung,Kim, Dong Kyu,Lee, Young Jae,Oh, S Paul WJG Press 2012 WORLD JOURNAL OF GASTROENTEROLOGY Vol.18 No.15

<P>Hereditary hemorrhagic telangiectasia (HHT) is a rare autosomal-dominantly inherited disease that occurs in approximately one in 5000 to 8000 people. Clinical diagnosis of HHT is made when a person presents three of the following four criteria: family history, recurrent nosebleeds, mucocutaneous telangiectasis, and arteriovenous malformations (AVM) in the brain, lung, liver and gastrointestinal (GI) tract. Although epistaxis is the most common presenting symptom, AVMs affecting the lungs, brain and GI tract provoke a more serious outcome. Heterozygous mutations in endoglin, activin receptor-like kinase 1 (ACVRL1; ALK1), and SMAD4, the genes involved in the transforming growth factor-관 family signaling cascade, cause HHT. We report here the case of a 63 year-old male patient who presented melena and GI bleeding episodes, proven to be caused by bleeding from multiple gastric angiodysplasia. Esophagogastroduodenoscopy revealed multiple angiodysplasia throughout the stomach. Endoscopic argon plasma coagulation was performed to control bleeding from a gastric angiodysplasia. The patient has been admitted several times with episodes of hemoptysis and hematochezia. One year ago, the patient was hospitalized due to right-sided weakness, which was caused by left basal ganglia hemorrhage as the part of HHT presentation. In family history, the patient's mother and elder sister had died, due to intracranial hemorrhage, and his eldest son has been suffered from recurrent epistaxis for 20 years. A genetic study revealed a mutation in exon 3 of ALK1 (c.199C > T; p.Arg67Trp) in the proband and his eldest son presenting epistaxis.</P>

A case of Cowden Syndrome Associated with Multiple Gastric Polyposis

( Minsu Ha ),( Jun Won Chung ),( Yoon Jae Kim ),( Kwang An Kwon ),( Dong Kyun Park ),( Ki Baik Hahm ),( Young Don Lee ),( Woo Chang Lee ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1

Cowden syndrome is a rare autosomal dominant disorder that is characterized by multiple hamartomas in a variety of tissues and this is associated with germline mutations in the PTEN (phosphatase and tensin homologue) gene, which is the tumor suppressor gene located on chromosome 10q23.3. A 29 year-old woman was presented with multiple gastric polyps. The laboratory results were normal except for mild anemia, with a hemoglobin level of 11.9 g/dl. EGD revealed multiple gastric, duodenal polyps and esophageal acanthosis. Colonoscopy revealed possible hamartomatous polyps in the rectum. Under the suspicion of Cowden syndrome, sonography of the thyroid and breasts was carried out, which revealed multiple thyroid masses. The patient underwent total thyroidectomy. The pathology was reported as invasive follicular carcinoma. A gene study by direct sequencing showed the presence of a PTEN mutation (c.633C>A /p.Cys211X).

Science Motivation Questionnaire Ⅱ(SMQⅡ) 번역본의 문항 반응, 일반화, 및 구조 타당도

하민수(Ha, Minsu),이준기(Lee, Jun-Ki) 학습자중심교과교육학회 2013 학습자중심교과교육연구 Vol.13 No.5

이 연구는 Glynn 등(2011)이 개발한 Science Motivation Questionnaire Ⅱ (SMQ Ⅱ)의 번역본에 대하여 (1) 고등학생들이 문항에 적절하게 반응하는지, (2) 반응의 적합도가 집단간 차이가 있는지, (3) 요인간 구조는 적합한지, (4) 요인간 구조의 적합도는 집단간 차이가 있는지를 문항반응 이론의 라쉬 모델과 구조방정식으로 확인하였다. 이 연구를 위하여 인문계와 실업계, 남녀 학생 1189명이 참여하였다. 라쉬 모델 분석을 통한 결과는 SMQⅡ의 번역본에 대한 학생들의 반응이 적합하게 이루어지고 있었으며, 문항의 기능은 인문계와 실업계, 남학생과 여학생에 동일하게 작용하고 있었다. 5단계 척도간 응답 경향성을 보면 중간값에 치중하고 극단값을 회피하는 경향을 확인할 수 있다. 구조방정식 연구 결과는 5가지 요인으로 구성된 SMQ Ⅱ의 구조적 모형이 자료를 잘 설명할 수 있음을 보여주고 있다. 또한 우리나라 학생의 경우 미국 대학생들에 비하여 자기 의지와 자기 효능의 상관관계가 상당히 높은 것으로 나타난다. 다중 집단 요인 분석 결과 SMQⅡ의 번역본의 구조의 적합도는 학 교간, 성별간 차이가 없는 것으로 보인다. 이상의 연구 결과들을 종합하면 SMQⅡ의 번역본은 타당하게 고등학생들의 과학학습동기를 측정할 수 있으며, 측정값을 토대로 한 집단 간 비교 역시 타당함을 확인할 수 있었다. This study aimed to investigate the statistical validity of translation of Science Motivation Questionnaire Ⅱ (SMQⅡ) developed by Glynn et al.’s (2011) study. Especially, this study focused on whether or not (1) high school students respond to the items properly, (2) the item responses are differential among groups, (3) the structure of factors in SMQⅡ are fit, and (4) the fitness of factors are differential among groups. Methodologically, Rasch model and structure equation modeling(SEM) were used to identify the research questions. Total 1189 male and female high school students from general school and career-focused high school participated in this study. The results of Rasch model analysis showed that students responded the items properly and that no differential item functioning were not found among groups. Students tended to avoided extreme options (e.g. strongly agree and strongly disagree). The results of SEM showed that the fitness of five factors from 25 items were acceptable. Our high school students exhibited the higher correlation between self-determination and self-efficacy than US university students. The multiple-group analysis showed the fitness of factors was not differential among groups. It is concluded that SMQⅡ is able to measure high school students’ science learning motivation successfully and the score of SMQⅡcan be used to compare the science learning motivations among different groups.

학습 지원 도구로서의 서술형 평가 그리고 인공지능의 활용: WA³I 프로젝트 사례

하민수 ( Minsu Ha ),이경건 ( Gyeong-geon Lee ),신세인 ( Sein Shin ),이준기 ( Jun-ki Lee ),최성철 ( Sungchul Choi ),주재걸 ( Jaegul Choo ),김남형 ( Namhyoung Kim ),이현주 ( Hyeonju Lee ),이종호 ( Jongho Lee ),이주림 ( Jurim Lee ),조 한국현장과학교육학회 2019 현장과학교육 Vol.13 No.3

본 연구는 인공지능을 활용한 서술형 평가 문항 자동채점 프로그램 WA³I을 개발하였으며, 이 프로그램이 학습 지원 도구로서 활용되기 위한 방안에 대하여 논하였다. 먼저 컴퓨터를 활용한 서술형 평가 자동채점에 대한 기존 연구들을 정리하고, 본 연구에서 개발한 서술형 평가 자동채점 프로그램 WA³I의 개발 과정을 소개하였다. 본 연구에서는 31개의 서술형 평가 문항을 개발하고 이에 대한 학생의 응답을 수집하였으며, 이 중 컴퓨터와 전문가 채점간의 일치도가 높은 19개의 문항에 대한 자동채점 모델을 개발하였다. 이 자동채점 모델로 채점 가능한 유사 문항 11개를 더 개발하여 총 30개의 문항을 웹상에서 WA³I ver.1으로 구현하였다. 효과적인 교수ㆍ학습을 위해 본 연구에서 개발된 서술형 자동채점 프로그램 WA³I ver.1의 개선 과제 및 추후 연구 방향에 대해 논하였다. 이러한 내용은 현장과학교사들의 평가 계획 및 실행에 영향을 줄 수 있을 것으로 기대된다. This study developed WA³I, which is automated computer scoring system in open-ended assessment using artificial intelligent and discussed how to utilize WA³I as a learning-support tool. To do this, the previous research dealing with automated computer scoring system has been reviewed and explained the development process of WA³I in Korea. We developed 31 open-ended questions and collected the students’ responses. Among the 31 questions, nineteen questions showing the high agreement between computer and human scoring were selected and scoring model were developed. In additions to selected nineteen questions, eleven questions were added as the prototype of web-based WA³I ver.1. We discussed how it can be improved in order to facilitate the effective teaching and learning. This paper is expected to give an implication to the science teachers’ assessment plan and practice.

약한 지도 학습 기반 태양광 발전시설 고장 탐지

하민수(Minsu Ha),이수아(Su-Ah Lee),정우환(Woohwan Jung) 한국정보과학회 2021 한국정보과학회 학술발표논문집 Vol.2021 No.12