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奠基
Author:
tan90
GeoGebra
New Resources
第八周作业3
比較五件物件的重量
异形操场
撒针估算面积实验
盈利與虧蝕
Discover Resources
deductive geometry
優良作品4(楚耘)
课题
金惠吉：光的反射与折射
伽利略比值II (Alfinio Flores & Hugh A. Sanders)
Discover Topics
Addition
Conditional Probability
Polynomial Functions
Tree Diagrams
Differential Equation