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1987全国文8
Author:
常振虎
GeoGebra
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拼砌四邊形
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
畫出對稱圖形
四邊形的特性
Discover Resources
謝爾賓斯基三角形(Sierpinsky)
test02繪本用
Hypocycloid Wheel
棒形圖2
表内除法
Discover Topics
Fractions
Multiplication
Cube
Surface
Combinatorics