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Author:
tan90
GeoGebra
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異分母分數減法
兩位數除以一位數(一)
算柱 (兩位數)
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题
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對稱
量度的誤差 Errors in Measurement
Quiz on Centres of Triangles 三角形的中心:測驗
長方形的對稱軸
構作對稱圖形_FK1
Discover Topics
LCM and GCD
Subtraction
Integral Calculus
Exponent
Surface