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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
z`]]
Reflection = 180° Rotation about a Line
Reflection Across 2 Parallel Lines
bewijs stelling van Pythagoras
Using Experimental Probability to Estimate π - Monte Carlo Method
Discover Resources
Hexagon Tiling
RandomElement
Polar Rectangular Coordinates
Geom 2.A.1 practice problem 1
การบวกเศษส่วน
การแยกตัวประกอบพหุนามดีกรีสอง
Discover Topics
Triangles
Mathematics
Scatter Plot
Coordinates
Confidence Interval