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Author:
Hyacinth Wang
GeoGebra
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異分母分數減法
兩位數加法
找出對稱軸
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
Apollonius Problem gergonne 3
GriffithsTheorem
locus of a segment
growth
小学一年级上（人教版）
Discover Topics
Expected Value
Root
Subtraction
Straight Lines
Circumcircle or Circumscribed Circle