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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
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Limaçons
apec
רישום חופשי
z`]]
bewijs stelling van Pythagoras
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Investigation: Area of a triangle using parallelograms
การแยกตัวประกอบ
Linear motion on spokes (tear drop)
Headphones Case (AR Modeling Challenge)
pg 42 example 2
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Mode
Subtraction
Power Functions
Optimization Problems
Statistics