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笛卡兒之心
Author:
陳隆期
GeoGebra
New Resources
柱體建築師
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
第八周作业
兩位數加法
Discover Resources
包含除法（整數或分數 ÷ 分數）
梯形有甚麼特性？
日照图
Compare areas by cutting shapes Q3
梯形堆垛
Discover Topics
Algebra
Tree Diagrams
Means
Symmetry
Linear Functions