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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
apec
Reflection = 180° Rotation about a Line
Volume by Shells Around y
Using Experimental Probability to Estimate π - Monte Carlo Method
Reflection across a line
Discover Resources
dick
Law of Cosines Extending Pythagorean Theorem
Manami
Reference Triangle Animation
H2M 2017 P1 Q3
Discover Topics
Vectors 3D (Three-Dimensional)
Stochastic Process or Random Process
Constructions
Hyperbola
Special Points