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等差數列等差數列
Author:
李春培
等差數列等差數列
GeoGebra
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三角函数 的副本
撒针估算面积实验
双心四边形
第三周作业效果演示
直線的斜率：水平變化 & 鉛垂變化
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「相似三角形」任务4
glt-c05-04 三角錐旋轉
上課
Angle between Lateral Faces 3
两平面夹角
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Indefinite Integral
Inequalities
Planes
Conditional Probability
Difference and Slope