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rainbow
Author:
李春培
rainbow
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
三位數除以一位數（一）
判斷球體
錐體建築師
Discover Resources
Addition and Subtraction of Directed Numbers (1) 有向數加減(1)
Probability animation
多項式函數
Geometry : Types of Angles (幾何：角的種類)
必修二P156二面角与平面的法向量
Discover Topics
Bar Chart or Bar Graph
Arithmetic
Combinatorics
Fractions
Parallelogram