Diagnosis of Seventh Grade Students' Mental Model on Diffusion and Osmosis Concepts through a Web-based Mental Model Diagnostic System
| Autor: | Tung, Yao-Yu, 董曜瑜 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 The purpose of this research was to diagnose seventh grade students’ mental model on diffusion and osmosis concepts through a web-based mental model diagnostic system. The research method was questionnaire survey, consisting of 1107 students in the junior high schools in northern and central Taiwan. The questionnaires were collected by Diffusion and Osmosis Diagnostic Test (DODT), through association rule analysis of data. The analysis of Web-based Mental Model Diagnostic System (WMMD) was to establish students’ response, and explore the types of mental models that students may have. After the analysis, 30 students were selected to explore the possible factors of students’ formation of mental models by Interview-About-Evants (IAE). In the research, in addition to the analysis of students’ misconception in DODT, the students were divided into three groups by cluster analysis according to their response of each question in DODT. The R with Apriori algorithm analyzed the association rules of each group and the whole in the DODT response, so as to compare the rules of each group and the whole, and integrate them into effective association rules, which were used as the analysis basis of the WMMD system. Then, the association rules were input into WMMD system, and the theory of Explanatory Coherence (TEC) was cohesively to assess the concept combination and thus the students formed the mental models of diffusion and osmosis. The events in the interview were developed by DODT, and the semi-structured interview was to clarify the factors in the students’ response. The results revealed that: (1) The students’ misconception was found in DODT: five misconception in ‘the Particulate & Random Nature of Matter’, one misconception in ‘Concentration & Tonicity’ and ‘the Influence of Life Forces on Diffusion & Osmosis’ respectively, and four misconception on ‘the Process of Diffusion’ and ‘the Process of Osmosis’ respectively. (2) In the association rule analysis, 25 effective rules can be obtained. And only 2 of them were common on the three groups, while 5 of them were common on the two groups, and remaining 18 rules were rules on one group. It showed that every group of students’ response had unique tendencies and association response, which can be used to predict the possible combination of students’ concepts. (3) By the results of the association rules, through the analysis and comparison of the WMMD system, and assessment of TEC, we found 23 sub-mental models about diffusion and osmosis. There were 11 types of matter nature model, 4 types of particle nature model, 4 types of external force model, 3 types of mixed model, and 1 type of science-like model. (4) In addition, the results of the interview, we found the factors to influence mental models about diffusion and osmosis were students’ ontology (such as the nature of matter, intuitive interpretation), the prior learning and scientific theory, and transformation difficulty between microscopic and macroscopic, producing the representation of analogies. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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