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凸透鏡 Convex Lens
Author:
Alex CHIK
Drag the grey/ red points to change positions of the object. Drag the black point to change source of light.
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
Icosahedron1
Average Rate of Change: Graph a Function (1)
alg2_05_05_04_applet_exp_fxn_flvs
Poorly Drawn Parallelograms 3
Tutorial: Create lists of numbers and objects
Discover Resources
Simple Cosine
Section 3-1 Example 4
Another Special Theorem: Part 2 (V1)
bisect a segment
Increasing/Decreasing function
Discover Topics
LCM and GCD
Orthocenter
Division
Scatter Plot
Complex Numbers