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QP3.18
Author:
Pokman Cheng
GeoGebra
New Resources
三位數除以一位數（二）
垂直線的斜率
探究三角形的全等條件
多邊形的面積
祖冲之的期望：内棋与外棋
Discover Resources
範例：畫圈圈的筆
五上_分數乘法(教師版)
beauty from WuLing.TW
吃點點
長方形面積
Discover Topics
Cube
Similar Triangles
Dilation
Matrices
Area