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撒针估算面积实验
Author:
孟宝兴
GeoGebra
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兩組對邊相等的四邊形
小数 的副本
GeoGebra笔记功能体验课件
算柱 (兩位數)
近似值:有效數字
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比和比值
Quiz on Solving Right Triangles (Combined) 解直角三角形:合併測驗
旋转直角
homework
Copy of 用 Geogebra 模擬日照、影長變換
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Kite
Diagrams
Step Functions
Derivative
Statistics