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題名 | 一位國小五年級學生對比值問題的解題表現=A Fifth Grader's Performance on Solving Ratio Problems |
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作者 | 張育萍; 劉祥通; | 書刊名 | 科學教育研究與發展季刊 |
卷期 | 39 2005.06[民94.06] |
頁次 | 頁39-59 |
分類號 | 523.32 |
關鍵詞 | 比值; 個案研究; 工作單為基礎的訪談; 分數; Case study; Ratio; Rational number; Task-based interview; |
語文 | 中文(Chinese) |
中文摘要 | 本研究在探討一位國小五年級學生對比值問題的解題表現。以個案研究法為主軸,並採取工作單位為基礎進行訪談。工作單上的問題共有7題,分析時將有相同解題表現的問題列為同一原案,共3個原案。其中研究結果最特殊的發現就是:學生不易將等號視為等價式,且利用「一份中所佔的比值」方式解題,因此能以分數形式表示比值的結果而不是以小數表示。 |
英文摘要 | The purpose of this study is to explore a fifth grader's performance of solving ratio problems. The study was a case study. The task-based interview was adopted in the process of data collection. There were 7 questions of the task, and 3 protocols that derived from the similar performance of the results. The important findings of the study are as follows. First, she couldn't view both numbers between equal mark, "=", having an equivalent relationship. In addition, she first used the strategy of finding "the quantity of unit fraction" and used the result of "the quantity of unit fraction" to get the answer of ratio problems. Consequently, the form of his answer is a rational number rather a decimal number. |
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