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包含除法（1 ÷分數）的副本
Author:
xiaodandan
,
GeoGebra Institute of Hong Kong
Topic:
Fractions
GeoGebra
New Resources
祖冲之的期望：内棋与外棋
活动三：应用性质
常见四边形是否是双心四边形
比較五件物件的重量
圓的基本性質
Discover Resources
九點圓
test
圆形磁场
翰林數學_2下_CH3-1_三角形的內角與外角
勾股定理的直观证明（义务教育数学 新课标-例82）
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Cosine
Rational Numbers
Orthocenter
Conditional Probability
Division