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重难题组周练（1）——二次函数
Author:
程洁
Topic:
Quadratic Functions
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
錐體建築師
【案例】2018年全国1卷理科12题
找出對稱軸
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S2,3,5 Statistics
happy planet
Distributive Law of Multiplication 1 (乘法的分配率 1)
梅花
正方体展开图的副本
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Logic
Integers
Trigonometry
Geometric Transformations
Arithmetic