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杯子反射光線(包絡)
Author:
陳柄何
Topic:
Curve Sketching
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
四邉形 (四年級) 教師版
Discover Resources
tessellation design
Positive angles & Negative angles
兩位數除法
reflectional symmetry_4
K1+k2
Discover Topics
Definite Integral
Median Value
Fractions
Confidence Interval
Triangles