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加法有圖案
Author:
Cobie Lo
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
三位數除以一位數（二）
錐體建築師
四邉形 (四年級) 教師版
Discover Resources
分數加法
Geogebra 教學
比較角的大小
Archimedean spiral
The motion of a charged particle in an electric field带电粒子在加速电场和偏转电场中的运动
Discover Topics
Frequency Distribution
Histogram
Parabola
Straight Lines
LCM and GCD