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slide9
Author:
tao sun
GeoGebra
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第三周作业效果演示
撒针估算面积实验
直線的斜率：水平變化 & 鉛垂變化
盈利與虧蝕
第八周作业2
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Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
中點軌跡(動點在兩圓上)
一次函數與斜率
舞动的阴阳蝴蝶
syps 邊長與三角形
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Solids or 3D Shapes
Multiplication
Orthocenter
Limits
Equations