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乘法練習
Author:
周錦鋒
GeoGebra
New Resources
兩位數除以一位數（一）
柱體建築師
拼砌四邊形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
Discover Resources
電子幾何條
各級曾參與義工活動的人數
分解三棱柱
齒輪作圖
旋转直角
Discover Topics
Expected Value
Ellipse
LCM and GCD
Pythagoras or Pythagorean Theorem
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