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镂空正十二面体
Author:
赵林
GeoGebra
New Resources
三位數除以一位數（二）
GeoGebra笔记功能体验课件
異分母分數減法
算柱 (兩位數)
球體建築師
Discover Resources
柏拉圖宇宙模型
Question 5
Measuring areas by placing different shapes
sin函數
Time
Discover Topics
Step Functions
Cylinder
Median Line
Tree Diagrams
Cube