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平行四邊形面積
Author:
lkkbmaths teachers 檔案儲存用
Topic:
Area
,
Parallelogram
GeoGebra
New Resources
拼砌四邊形
柱體建築師
兩位數加法
GeoGebra笔记功能体验课件
球體建築師
Discover Resources
ggb-fs-a1
函數愛心
串珠
Comparing_fraction
GeoGebra数学资源（4-8年级）
Discover Topics
Cube
Confidence Interval
Mode
Special Points
LCM and GCD