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爺爺的遺產
Author:
陳隆期
GeoGebra
New Resources
四邊形的特性
三位數除以一位數（一）
畫出對稱圖形
兩位數加法
球體建築師
Discover Resources
平行四邊形變奏II
becca貝卡卡
四邊形內部反射_長寬角度可調整
四下_認識小數(教師版)
周界與面積
Discover Topics
Tree Diagrams
General Quadrilateral
Means
Parametric Curves
Rational Numbers