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Author:
Lin Ching Chieh
GeoGebra
New Resources
異分母分數減法
柱體建築師
兩位數除以一位數（一）
算柱 (兩位數)
錐體建築師
Discover Resources
固定周界的長方形面積變化
等值分數圓餅圖
test
測試教案 80630 張哲綸
橢圓1--同心圓法
Discover Topics
Symmetry
Vectors 2D (Two-Dimensional)
Upper and Lower Sum or Riemann Sum
Line Segment
Hyperbola