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時鐘（教師用）
Author:
Mr Tsang
可顯示或隱藏分針，讓學生觀察時針的運動。
GeoGebra
New Resources
Perpetual calendar
רישום חופשי
Derivative of f(x) = ln(x)
z`]]
Vector Valued Functions
Discover Resources
Create and solve linear equations
Traeffurfiadau Graffiau C3 CBAC Haf 2010
Graphs to Equations
Triangle Sums
Površina trokuta
Discover Topics
Matrices
Power Functions
Function Graph
Straight Lines
Probability