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優良作品2(季緯)
Author:
Ching-Hui Chou
GeoGebra
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近似值：有效數字
兩位數加法
兩組對邊相等和有直角的四邊形
柱體建築師
畫出對稱圖形
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Travel Graph 行程圖
整數或分數÷分數_ 工作紙（一）_題1c
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
放射狀圖形(1)
Copy of 賺賠：例1
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Trigonometry
Linear Regression
Tangent Function
Geometry
Parallelogram