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相机光圈模拟（3D）
Author:
孟宝兴
Topic:
Mode
GeoGebra
New Resources
球體建築師
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
找出對稱軸
算柱 (兩位數)
Discover Resources
梯形面積---麥田圈
mario coin
規律幾何圖形珠串
Copy of 圓周公式應用題2
乘方
Discover Topics
Random Experiments
Symmetry
Straight Lines
Conic Sections
Tree Diagrams