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Author:
洪馷孺
GeoGebra
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四邉形 (四年級) 教師版
球体的体积推导
兩位數加法
三位數除以一位數(一)
球体的体积推导(优化版)
Discover Resources
餘弦定理
Triangle on sphere
運用量度器比較角的大小
数学几何
百分數及其應用
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Translation
Fractal Geometry
Quadratic Functions
Sine
Dilation