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符成岗
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符成岗
GeoGebra
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活动三：应用性质
撒针估算面积实验
第八周作业2
正方形雪花图案
异形操场
Discover Resources
GGB小組演示作業範例2
test
三角函數名稱的由來
Solving Triangles (Ambiguous SSA case)
shuangquxian
Discover Topics
Right Triangles
Pyramid
Logarithmic Functions
Means
Hyperbola