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2018东莞面积动画
Author:
靳道阳
GeoGebra
New Resources
撒针估算面积实验
斐波那契螺旋弧线（表格法-可动态调节）
龙形曲线-分形龙2
比較五件物件的重量
第八周作业2
Discover Resources
底圖為圓，截面為半圓
angle 123
動國旗
兩圓位置關係及公切線
素因数分解 Prime Factorization
Discover Topics
Right Triangles
Multiplication
Matrices
Histogram
Vectors 3D (Three-Dimensional)