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七彩勾股树
Author:
孟宝兴
Topic:
Pythagoras or Pythagorean Theorem
GeoGebra
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兩位數加法
兩組對邊相等的四邊形
第八周作业
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
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梯形
Linear Programming
正余弦函数一个周期图像的生成
赋值保存法
楼梯
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Ellipse
Statistics
Sine
Kite
Geometric Transformations