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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
Slope Between 2 Points (Phase 2)
Cartesian vs Polar
רישום חופשי
Random Polar Curve (3)
Rose Curve
Discover Resources
Make A Scaled Drawing
Circle Vocabulary
Circumcenter-Nathan Horn
Chapter 2 Proofs - Review
Discover Topics
Variance
Expected Value
Congruence
Sphere
Integers