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精神堡壘
Author:
李春培
精神堡壘
GeoGebra
New Resources
球体的体积推导（优化版）
兩位數除以一位數（二）
球体的体积推导
三位數除以一位數（二）
錐體建築師
Discover Resources
圓周
hihi
畢氏定理動態證明(歐基里得，平形四邊形等面積2，應用時間參數跳躍函數配合向量)
畢氏定理
f(x)=ax^2
Discover Topics
Difference and Slope
Upper and Lower Sum or Riemann Sum
Statistics
Complex Numbers
LCM and GCD