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Author:
chisunch1
GeoGebra
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兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
判斷球體
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
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分數與小數
圓與直線
對數的對稱
周界
星星
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Volume
Arithmetic Operations
Expected Value
Sine
Equations