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吳孟哲老師幾何題
GeoGebra
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GeoGebra笔记功能体验课件
四邊形的特性
判斷球體
三位數除以一位數(二)
拼砌四邊形
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常態分配
小時鐘
GGB基礎教學Reuleaux
分數認識
五年級_立體圖形_角柱展開圖
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Fractions
Optimization Problems
Kite
Differential Equation
Random Experiments