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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of The Korean Association For Science Education
Journal Basic Information
Journal DOI :
The Korean Association for Research In Science Education
Editor in Chief :
Volume & Issues
Volume 25, Issue 7 - Dec 2005
Volume 25, Issue 6 - Oct 2005
Volume 25, Issue 5 - Sep 2005
Volume 25, Issue 4 - Aug 2005
Volume 25, Issue 3 - Jun 2005
Volume 25, Issue 2 - Apr 2005
Volume 25, Issue 1 - Feb 2005
Selecting the target year
A Comparison between High School Students' Algorithmic Problem Solving and Conceptual Understanding by Types of Chemistry Problems
Noh, Tae-Hee ; Kang, Hun-Sik ; Jeon, Kyung-Moon ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 79~87
We compared algorithmic problem solving and conceptual understanding of chemistry with three types (algorithmic, pictorial- and wordy-formatted conceptual) of problems. The familiarity, confidence, and preference to the three type of problems were also examined. The chemistry problem solving ability test was administered to 228 students from two top high schools in the province of Gyeonggi who were preparing the chemistry examination among the four optional subjects (biology, chemistry, earth science, physics) for enter university. After administrating the chemistry problem solving ability test, the degree of familiarity to some problems and the degree of confidence of their answers in a Likert scale were asked to the students. Besides, the students were asked to place preference to the type of problems in order. The students scored better on the algorithmic problems than on the conceptual problems (pictorial and wordy problems), and were also most familiar with the algorithmic problems. The students were more confident of their answers on both of types pictorial and algorithmic problems, and preferred pictorial problems rather than both of types algorithmic and wordy problems.
The Analysis of Textbook Contents and Science Teachers' Conceptions on Freezing Point Depression Phenomenon
Ha, Seong-Ja ; Kim, Bum-Gi ; Paik, Seoung-Hey ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 88~97
The purpose of this study was to investigate explanations of science textbooks and science teachers' conceptions related to freezing point depression phenomenon. Seven kinds of middle school science textbooks and five kinds of high school chemistryII textbooks were analyzed for the purpose. The teachers' conceptions were searched by a questionnaire developed in this study. The subjects were 146 science teachers. The explanation types of science textbooks were divided into two; 'Description of the phenomenon' and 'Vapor pressure lowering'. The explanations in most of middle school science textbooks and high school chemistryII textbooks belong to 'Description of the phenomenon' and there was no explanation of the reason. The graphs related to depression of freezing point were diverse, too. Most of the science teachers also did not have scientific conception. The percentage of the teachers who thought that the cause of freezing point depression was blocking of solute in solution was high. But the teacher could not find meaningful relation the 'Blocking of solute' explanation represented for elevation of boiling point with depression of freezing point. It is insisted that entropy concept is need to explain depression of freezing point phenomenon in this study.
An Use of Dilemma Episodes in Science Teacher Education
Yoon, Hye-Gyoung ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 98~110
This study aims to explore the usefulness and the way of practical use of dilemma episodes in science teacher education by the responses of teachers on the given dilemma episodes and connected discussions. The research based on the idea of constructivist teacher education, the assumption that dilemmas can provide teachers with an open investigation context, an understanding of nature of science education. The dilemmas episodes in Wallace and Louden(2002) were introduced and discussed in order during graduate course to 11 elementary teachers. Perception on the reality and importance of given dilemmas differed by topics, but many of them were very similar to their experiences, brought active discussion on the issues. Some could not arouse sympathy because of cultural differences. The teachers recognized the dilemma episodes provided thoughtful reflection on their own teaching, opportunity of sharing experience and knowledge with peers, overall view for science education. Most of them gave positive opinion on the use of dilemma episodes in teacher education. Upon these teachers' responses and exploratory research experiences, some practical suggestion were made for science teacher educators.
Characteristics of Experimental Design and Evidence Choice of Elementary School Students in Problem Solving Process Related to Controlling Variable
Kim, Sun-Ja ; Choi, Byung-Soon ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 111~121
The purpose of this study was to analyze characteristics of experimental design and evidence choice of the elementary school students in problem solving process related to controlling variable. For this study, 96 6th grade students were selected and tested with Science Reasoning Task. This study revealed that the types of experimental design were categorized as variance of control variable, controlling of causal variable, perfect controlling variable, imperfect controlling variable, variance of all variable. Prior belief had a strong influence on student's experimental design. The types of evidence choice were categorized as perfect controlling variable, controlling causal variable, variance of causal variable. The degree of controlling variable in evidence choice process was much lower than that in experimental design. Most students tended to choose evidence according to prior belief without controlling variable. The results of this study implied that student's prior belief and characteristic of science process skills should be considered to develop program for promoting controlling variable ability.
Analysis of Interpretation Processes Through Readers' Thinking Aloud in Science-Related Line Graphs
Kim, Tae-Sun ; Kim, Beom-Ki ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 122~132
Graphing abilities are critical to understand and convey information in science. And then, to what extent are secondary students in science courses able to understand line graphs? To find clues about the students' interpretation processes of the information in science-related line graphs, this study has the following research question: Is there a difference between the levels of complexity of good and poor readers as they use the thinking aloud method for studying cognitive processes? The present study was designed to provide evidence for the hypothesis that good line graph readers use a specific graph interpretation process when reading and interpreting line graphs. With the aid of the thinking aloud method we gained deeper insight into the interpretation processes of good and poor graph readers while verifying verbal statements with respect to line graphs. The high performing students tend to read much more information and more trend-related information than the low performing students. We support the assumption of differential line graph schema existing in the high performing students in conjunction with general graph schema. Also, high performing students tend to think aloud much more metacognitively than low performing students. High performing students think aloud a larger quantity of information from line graphs than low performing students, and more trend-related sentences than value-related sentences from line graphs. The differences of interpretation processes revealed between good and poor graph readers while reading and interpreting line graphs have implications for instructional practice as well as for test development and validation. Teaching students to read and interpret graphs flexibly and skillfully is a particular challenge to anyone seriously concerned with good education for students who live in an technological society.
The Relation between Preservice Teachers' Philosophical Views on Science and Types of Responses to Alternative Hypotheses
Jung, Jae-Gu ; Yang, Il-Ho ; Jeong, Jin-Woo ; Wee, Soo-Meen ; Lee, Hea-Jung ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 133~145
The purpose of this study was to identify the relation between preservice teachers' philosophical views on science and types of responses to alternative hypotheses. To identify preservice teachers' philosophical views on science, the extraterrestrial impact theory and the volcano-greenhouse theory, alternative hypotheses related to dinosaur extinction were administered to 37 elementary preservice teachers and 52 secondary preservice teachers. Subjects were required to write down their ideas before and after reading the alternative hypotheses, and then the dimensions of responses to initial ideas were analyzed. To analyze, Soh's Philosophical Perspectives Prove(PPP) was used. The results of this study were as follows: (a) elementary and secondary preservice teachers' philosophical views on science corresponds to eclecticism, (b) the main types of responses were partial theory change in elementary preservice teachers and rejection in secondary preservice teachers, (c) preservice teachers' philosophical views on science and types of responses were eclecticism-partial theory change in elementary preservice teachers and eclecticism-rejection in secondary preservice teachers.
A Case Study of Secondary School Science Teachers' Faiths on Experiments in Science Classes
Paeng, Ae-Jin ; Paik, Seoung-Hey ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 146~161
This case study searched two secondary school science teachers' faiths on experiments in science classes. For this study, scaled questionnaires, open-ended questionnaires, structured and semi-structured interviews were conducted. Classroom activities were observed, and instructional plans and materials were collected. In addition, students of the two teachers' classes were interviewed with respect to their thoughts on the lessons. Data sources were analyzed inductively. The triangulation and the member checking guaranteed the validity of this study. As the results, the teachers' faiths on experiments were related to the constructivism, but the faiths were not in accord with their classroom practices. From these results, it was concluded that the teachers' misjudgments about the students' inquiry levels and unfit reorganizations of the experimental activities were the causes of the gap between the teachers' faiths on experiments and classroom practices.
The types of Students' Responses to Anomalous Situations in Physics - Observation, Perception about Observation, Belief Change about Preconception, Contents and Types of Suggested Experiments, Cognitive Conflict Level by the Belief Change
Kim, Ji-Na ; Kwon, Jae-Sool ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 162~172
The purpose of this study was to examine the students' responses when students were confronted with anomalous situations in physics. 16 students were selected from one middle school in Busan by examining the pre-test results. To measure students' responses and cognitive conflict levels, written Cognitive Conflict Levels Test(CCLT) developed in a previous study was used together with interviews. Students' responses were tape-recorded. Two kinds of anomalous situations were presented. One was a quantitative demonstration with scale, the other was a qualitative demonstration without scale. In the quantitative group, all students observed anomalous situations correctly. However, in the qualitative group, many of their observations of anomalous situations were incorrect. The students who observed anomalous situations based on preconceptions tended not to abandon their preconceptions, and suggested confirmation experiments which were supposedly to support their preconceptions. The students who recognized results very differently from their preconceptions when confronted with anomalous situations abandoned their preconceptions and suggested alternative experiments. The students who changed their beliefs about preconceptions showed higher cognitive conflict levels than who didn't abandon their preconceptions.
Analysis of Assessment Types, Scoring Methods and Reliability of Science Performance Assessment in Middle and High School
Lee, Ki-Young ; An, Hui-Soo ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 173~183
In this study, we questioned what assessment types and scoring methods of science performance assessment(SPA) were being used in middle and high school, and how much these SPA scores were reliable(generalizable). To answer these questions, SPA data obtained from the seven schools were classified according to assessment type and scoring method. Based upon this classification, we analyzed the reliability by applying generalizability theory. The result, from the classification of assessment type and scoring method, showed that SPA types of the seven schools were divided into two types: paper-pencil type and task type. Paper-pencil type included answer(content)-restricted essay-type test solely. Task type has two parts: process and outcome assessment. As the results of analyzing scoring methods of the seven schools, there were two cases in the way of scoring methods: one case is scoring all essay-type items and performance tasks by one teacher, the other is scoring assigned performance tasks by two teachers. But the case of scoring assigned essay-type items or the case of cross scoring by two or more teachers were not found. The findings of the reliability analysis are as follows: (1) Effect of essay-type item to SPA score was larger than that of performance task. (2) There was remarkable difference among the seven schools' interaction effect of person and rater in scoring performance tasks. (3) Most of generalizability(reliability) coefficients of SPA for the seven schools were smaller than the acceptable generalizability coefficient(0.80). Therefore, the population of statistical parameters such as number of item, task and rater, should be increased for approaching the acceptable generalizability level.
Study on the Secondary School Students' Perception on Scientist and Woman Scientist as Career and Its Role Model
Lee, Hei-Sook ; Choi, Kyung-Hee ; Lee, Jae-Kyung ; Ma, Kyung-Hee ; Lee, Ki-Soon ;
Journal of The Korean Association For Science Education, volume 25, issue 2, 2005, Pages 184~196
The purpose of this study is to identify various issues contributing to the current issues of students not wanting to major in science and engineering. and further explore various strategies to encourage their higher education in the science and engineering area. The study administered survey on students' perception towards the science related profession including respondents' gender, grade, their attitude towards woman scientists, perception on the woman scientists, scientists as profession, their level of knowledge on the scientists, and if there is any they respect. The results indicated that overall perceptions on the scientists as career for high school students was positive, but there was more negative acceptance for the juniors since they are more concerned with their majors at the university: higher for students who are in the natural science area than the ones in the social science school since they are more directly related than others. The perception on the woman scientists and girls in the science and engineering majors was positive. However, there were some differences in the response level among the items. Among these, considering the job availability and conditions, the perception was more negative than the others. Also the result indicated that both boys and girls disagree that the science-related profession may be gender-inappropriate for girls due to physical and cognitive characteristics. Results also indicated the level of awareness among scientists, they had higher awareness for male scientists than that of the female, and also international ones than the national ones. And many girls did not have positive image of a successful woman scientists.