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Ebbinghaus 错觉v2
Author:
acchu
GeoGebra
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比較五件物件的重量
第三周作业效果演示
常见四边形是否是双心四边形
第八周作业1
撒针估算面积实验
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y=a(x-h)²+k的圖形
垂心即內心
龍騰4_1-1課例1
Homework6
製作一個面積是24平方厘米的平行四邊形。
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Numbers
Trapezoid
Upper and Lower Sum or Riemann Sum
Arithmetic Operations
Cone