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先估算，後看解釋
Author:
Tse Sir
先估算，後看解釋
New Resources
兩位數加法
四邊形的特性
第八周作业
拼砌四邊形
畫出對稱圖形
Discover Resources
內心與角平分線觀察
vbcvbcvbcvbcvbcvcv
regular tetrahedron (CH4)
Stem and Leaf(幹葉圖)
小游戏
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Histogram
Calculus
Sine
Cylinder
Probability