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凹透鏡 Concave 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
Construct a Conic
Exploring Simple Loci 探究簡單軌跡
Average Rate of Change: Graph a Function (2)
alg2_05_05_04_applet_exp_fxn_flvs
探究由平行線和截線所成的角
Discover Resources
Investigation 1 Part 1
London Eye
f(bx) Worksheet
Similar Triangles within a Right Triangle!
Riemann's example of a discontinuous integrable function
Discover Topics
Fractions
Inequalities
Mode
Limits
Histogram