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根據百分率找數量（一）: 例4
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
拼砌四邊形
異分母分數減法
兩位數除以一位數（一）
三位數除以一位數（二）
球体的体积推导（优化版）
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Ray tracing
圖騰 DEMO
教學－直線方程性質
GeoGebra Tube
柱體建築師
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Ellipse
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Solids or 3D Shapes