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分数的乘法
Author:
KL HUI
Topic:
Fractions
GeoGebra
New Resources
球体的体积推导
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
四邉形 (四年級) 教師版
畫出對稱圖形
Discover Resources
閱讀鐘面及數字鐘（時和分）
hnrfgyhnjyngfnfg
百分數
No.1
伍四红 圆与正方形 面积同周长比较
Discover Topics
Tree Diagrams
Expected Value
Similarity Transformation or Similarity
Perimeter
Rhombus