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五上-CP4-第三节平行四边形面积1
Author:
冉献伟
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數加法
【案例】圆柱体内放置一个大球六个小球
算柱 (兩位數)
画直线等分三角形的面积
Discover Resources
題四
弦中點
test area
包絡橢圓
二次函數圖像 Graph of Quadratic Function
Discover Topics
Linear Regression
Numbers
Interest Calculation
Quadratic Functions
Continuity