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Exploring Projectile Motion Concepts_
Author:
陳澤瑩
GeoGebra
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撒针估算面积实验
斐波那契螺旋弧线（表格法-可动态调节）
正方形雪花图案
双心四边形
盈利與虧蝕
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(1+x/n)^n 逼近 exp(x)
xcxzczxczxczxczxczxc
supplementary
tube15240
【2020高考】新高考全国1卷（山东卷） 第16题
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Rotation
Perimeter
Quadrilaterals
Means
Parallelogram