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GeoGebra
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2015
Author:
Alvinwo
GeoGebra
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兩位數加法
三位數除以一位數(二)
異分母分數減法
兩組對邊相等和有直角的四邊形
拼砌四邊形
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y=a(x-h)²+k的圖形
三節棍
二次函数动点问题25
運用量度器比較角的大小
圓與切線
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Subtraction
Similar Triangles
Root
Poisson Distribution
Fractions