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同心圓+等分割線
Author:
許清惟
GeoGebra
New Resources
異分母分數減法
四邊形的特性
【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
拼砌四邊形
Discover Resources
閱讀鐘面及數字鐘（時和分）
Problem 1
科學記號與小數點的位移
優良作品2(怡雯)
用星星來比較圖形的大小
Discover Topics
Normal Distribution
Curve Sketching
Expected Value
Polynomial Functions
Linear Equations