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乘法表的自动练习
Author:
孟宝兴
乘法表的自动练习
GeoGebra
New Resources
判斷球體
錐體建築師
四邉形 (四年級) 教師版
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
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Spotlight 探射燈
Ex. 10C Q.8b
百分數、分數和小數互化
正方体的十一种展开图
S3 Ch4.3 例4.6a 三視圖(3D圖)
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Numbers
Tangent Line or Tangent
Line Segment
Statistics
Standard Deviation