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平行四邊形與長方形面積的關係
Autor:
Fantast
此動畫可闡釋計算如何從長方形面積與平行四邊形面積的關係,透過改變上方α角度的大小,便可以呈現由平行四邊形變換至長方形的過程。 過程中,可以讓學生看到四邊形的面積不會因為形狀改變而有變化,這樣便可以藉此讓學生了解平行四邊形的計算方法是: 平行四邊形面積 = 底 × 高 此動畫可以省略數方格計算面積的過程,讓學生直觀地了解長方形與平行四邊形面積的關係。
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