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Tool4P
Author:
侯杰材
GeoGebra
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異分母分數減法
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
四邊形的特性
錐體建築師
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五年級
點的堆墮
旋轉方塊
等距共軛點(isotomic conjugate point)
Geometry : Types of Angles (幾何：角的種類)
Discover Topics
Exponent
Geometry
Function Graph
Hypothesis Testing
Special Points