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Author:
康靖坤
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
異分母分數減法
sanjiaohanshu
兩位數除以一位數（二）
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Compound Inequalities
聯動鐘面
Conjugate Diameter—共轭直径
第四次:20190308
二分法
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Trigonometry
Statistical Characteristics
Parabola
Cuboid
Matrices