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題 名 | 點、線對稱概念電腦輔助教學軟體設計 |
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作 者 | 魏金財; | 書刊名 | 國教學報 |
卷 期 | 3 1990.07[民79.07] |
頁 次 | 頁235-271 |
分類號 | 521.57 |
關鍵詞 | 電腦輔助教學軟體; |
語 文 | 中文(Chinese) |
中文摘要 | 大自然中有許多物體具有對稱的特性,此種特性是兒童所熟悉的現象。大部份的兒童能用一般的語言說出對稱的特性,但要兒童用數學的語言,去描述對稱概念或要求兒童畫出正確的對稱圖形,則就不是一件容易的事。縱使在教學後,此概念的達成度亦不佳。造成此現象的原因之一是:一般的教學基於拓材與工其的限制,只能提供兒童整體圖形的經驗,無法使兒童在概念形成的過程中,立即回饋到每一點與對稱點對應關係的效果。基於對稱概念在學習上與教學上的困難,遂發展本單元,以做為輔助教學、學習之用。 本單元設計之目的,旨在協助兒童察覺對稱的特性,發現對稱的關係,建構出對稱的規則,進而形成對稱的概念。 本單元設計之方法是透過兒童自由操縱滑鼠的方式,經由畫圖工具箱,選擇不同的畫法和不同的圖形,電腦在兒童自由隨意的畫圖過程中,同時顯示對稱圖。畫完圖形後,以鏡像移動與掃描移動圖形的方式,使兒童察覺對稱的特性和發現對稱的規則性。最後經由兒童自己畫對稱圖形,電腦幫其檢核正確性等過程,使兒童形成正確的對稱概念。 |
英文摘要 | In the nature there are many objects having the characteristics of symmetry which most children are familiar with. Most children are able to tell the characteristics of symmetry in natural language, but it's difficult for them to describe the concept of symmetry in mathematical words or to draw. symmetrical patterns correctly. Even after being taught, children still attain this concept poorly. One of the reasons is that with the limit of teaching materials and tools, classroom teaching can only let the children see the whole pattern, but not the relationship between each pair of symmetric points during the process of the concept formation. Because of the difficulties of learning and eaching symmetry concept, this unit was developed to assist teaching and learning. The purpose of this unit is to help children recognize the characteristics of symmetry, discover the relationship, construct rules, and build up the concept of symmetry. The content of this unit is that by controlling the mouse in the way children wish, they can choose different painting tools and paint different pictures. While they are painting pictures, the computer displays their symmetric ones in the mean time. When painting is finished, the program moves the picture inwards and scans it to have children recognize the characteristics of symmetry and discover the rules of it. In the last activity, when finishing painting, children have to draw the symmetric pictures. The computer will check if they are symmetric and display the results in order to make children build up the correct concept of symmetry. This software has the functions of CAI as well as painting. Children can get the knowledge of what they should learn from this software, and also can paint various of pictures they like. |
本系統中英文摘要資訊取自各篇刊載內容。