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乘法计时训练
Author:
孟宝兴
Topic:
Multiplication
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
錐體建築師
拼砌四邊形
三位數除以一位數（二）
Discover Resources
Rectangle _03
利用按鈕控制動畫On/Off
三角恒等式證明
GGB作業
周界(移邊)
Discover Topics
Vectors 3D (Three-Dimensional)
Congruence
Planes
Parabola
LCM and GCD