頁籤選單縮合
題 名 | 國小學童對水溶液概念的認知與迷思概念之初探=A Study of Elementary Student's Cognition and Misconceptions on Aqueous Solution |
---|---|
作 者 | 陳淮璋; 黃萬居; 賴文榮; | 書刊名 | 科學教育研究與發展季刊 |
卷 期 | 29 2002.12[民91.12] |
頁 次 | 頁1-16 |
分類號 | 523.333413 |
關鍵詞 | 水溶液概念; 迷思概念; Aqueous solution concepts; Misconception; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究的目的是在探討國小學童對水溶液概念的認知情形、迷思摯和迷思概念的來源。研究對象是新莊市兩所公立國小四、五年級的學童。研究設計是採質量兼具的研究。資料分析包問卷答題類型的百分比、四年級和五年級學童概念認知差異的t檢定等;並以預測-觀察-解釋(POE)臨床晤談來深入了解學童對水溶液概念的認知和迷思概念及其來源。研究的結果如下:對演解概念在「現象」層面的認知,是四年級學童的通過率高於五年級,達到顯示著性的差異;對食鹽在定量水中違解的量有一定限度、定量水中糖和鹽溶解的量不同、濃度大的食水所含的食鹽比較多等概念,在現象層面及理由層面的認知,都是五年級學童的通過率高於四年級學童的通過率,達到顯著性的差異。 國小學童對水溶液概念的迷思概念如下:1.對物質違解後看不見了,約46%的學童有物質已不存在的迷思;2.約70%的學童食量不變時,鹽水久置會沉澱的迷思;3.約60%的學童,有食鹽水過濾時食鹽會留在濾紙上的迷思;4.約71%的學童有攪拌會增加溶解量的迷思;5.約46%的學童有顆粒較細,較易溶解,所以溶解量也較多的迷思。迷思概念的來源則有下例七項:1.同時事件的干擾;2.語意的模糊不清;3.不當的認知;4.實驗操作不當;5.記憶的混淆;6.不當的推論;7.自行建構。 |
英文摘要 | The purposes of the study were to investigate the cognition of the concepts of aqueous solution held by elementary students, their misconceptions, and the source of the misconceptions. The subjects of the study were the fourth graders and the fifth graders of two public elementary schools at Hsin-Juang City. The design of the study was both quantitative and qualitative. Data analyses included the percentage of the questionnaire answers, the t-test for the cognition difference between 4th graders and 5th graders. And a clinical interview in the pattern of Prediction-Observation-Explanation (POE) was involved in order to investigate thoroughly the aim of the study. Based on the data analysis using t-test, there were significant between the fifth graders than the fourth graders on the correct percentage of the questionnaire toward the following concepts: 1) the limitation of the quantity of dissolving salt in water, 2) the difference of the solubility of salt and sugar in water, 3) the more concentrated salt aqueous solution with more salt dissolved. There were some misconceptions as the following:1) 46% of the students thought that the substance would not exist any more if it dissolved in water and was invisible, 2) About 70% of the students thought that the salt aqueous solution stayed at constant water would precipitate at last, 3) About 60% of the students thought that salt would stay at the filter paper when the salt aqueous was filtered, 4) About 71% of the students thought that stirring solution would increase the solubility, 5) About 46% of the students thought that the smaller the grains were, the easier they might dissolve, and they dissolved more, too. The sources of misconception were: 1) interference of simultaneously event, 2) dim of semantics, 3) unsuitable cognition, 4) unsuitable experimentation operation, 5) confusing of memory, 6) over generization, 7) constructing by oneself. |
本系統中英文摘要資訊取自各篇刊載內容。