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滑桿動畫示範-2
Author:
侯杰材
GeoGebra
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画直线等分三角形的面积
四邉形 (四年級) 教師版
拼砌四邊形
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
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Sine Formula 正弦公式
曲柄搖桿接雙搖桿
gjc100a34 兩三角形重疊面積比
序列
刘校安排(1)
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Fractions
Exponent
Vectors
Congruence
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