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分數加法
Author:
iedc
GeoGebra
New Resources
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
兩位數加法
四邉形 (四年級) 教師版
兩位數除以一位數（二）
Discover Resources
Cross sections of cube
Apollonius Problem 5 CPP Power
約分
p11-10
乘加挑戰題
Discover Topics
Statistical Characteristics
Rotation
Sine
Scalene Triangles
Circle