This page contains a number of optical illusions to tease your
mind.
This math puzzle, obtained from
http://www.briandela.com/files/picture.gif,
is very interesting. Note that this works even if you print this,
cut out the pieces, and do it on your desk. Or even if you make
your own pieces with the appropriate dimensions.
Count the black dots in the above image.
This came from
http://www.bigjuju.com/jokes/blackdots.htm
This came from
http://www.bigjuju.com/jokes/focusonthedot.htm
This came from
http://www.bigjuju.com/jokes/lines.htm
This came from
http://www.bigjuju.com/jokes/eyeonthedot.htm
This came from
http://www.bigjuju.com/jokes/colourconflict.htm
This came from
http://www.bigjuju.com/jokes/elephantlegs.htm
Written by: Dave Regan
Home page: http://www.ao.com/~regan/