Links to interesting web sites for math students

Space-filling curves

http://www.cs.utexas.edu/~vbb/misc/sfc/Oindex.html excellent for spacefilling curves - has an applet that draws them

http://www.cut-the-knot.org/do_you_know/hilbert.shtml this one is good, too; also has an applet

http://www.dcs.napier.ac.uk/~andrew/hilbert.html this one gives you the replacement rules

http://en.wikipedia.org/wiki/Hilbert_curve as an L-system

http://en.wikipedia.org/wiki/Space-filling_curve

Visual illusions - this whole page is so much fun! Especially look at Bulging lines for Flash

http://www.cut-the-knot.org/VisualIllusions.shtml