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量度的誤差 Errors in Measurement
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
錐體建築師
第八周作业
畫出對稱圖形
三位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
新型軌跡
黎曼和
Copy of 分數與小數
外心
Rotation: Rolling Motion的副本
Discover Topics
Rhombus
Trapezoid
Multiplication
Natural Numbers
Rational Numbers