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折纸成抛物线
Author:
蔡永志
Topic:
Conic Sections
,
Parabola
GeoGebra
New Resources
兩位數除以一位數（一）
柱體建築師
四邉形 (四年級) 教師版
錐體建築師
算柱 (兩位數)
Discover Resources
圓錐截痕模型
黃金螺線62326 劉虹圻
Illusion-平行线错觉
直线与平面垂直的折纸实验
椭圆的离心率
Discover Topics
Conditional Probability
Congruence
Pie Chart or Circle Chart
Arithmetic
Logarithm