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Author:
張道民
GeoGebra
New Resources
兩位數除以一位數（一）
兩位數加法
球體建築師
球体的体积推导（优化版）
柱體建築師
Discover Resources
y=mx+k
六年級 圓周
Copy of Quiz on Compass Bearings
鉛筆畫圓
Copy of 圓周 (圖形F)
Discover Topics
Cylinder
Median Line
Hypothesis Testing
Volume
Variance