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正4黏合金字塔
Author:
Wu Xiao-Ren
GeoGebra
New Resources
sanjiaohanshu
近似值：有效數字
兩位數加法
算柱 (兩位數)
找出對稱軸
Discover Resources
Angles in the Circumference and the Centre
讀量杯上的刻度 (練習)
廣義角的代換(90,270)
讀量杯上的刻度 (練習)
任務2的副本
Discover Topics
Step Functions
Fractions
Rational Numbers
Interest Calculation
Rotation