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3-6-14
Author:
Tzuen Hsu
GeoGebra
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四邊形的特性
球體建築師
兩位數加法
畫出對稱圖形
兩位數除以一位數（一）
Discover Resources
【三角函數】sinx的平移
轉動的水箱
周考最后一题
兩位數乘三位數直式
Estimating the Mean
Discover Topics
Trigonometry
Pyramid
Polygons
Orthocenter
Exponent