Links for a Rainny Day

Euclid's Elements
Interacive logic teacher
Continued Fractions
The Prime Page
Magic Squares and Magic Cubes
Interactive Geometry from the Geometry Center in Minnesota.
Visualizing N-dimensional polytopes
What mathematician was born on your birthday?
3D Strange Attractors
Biographies of Women Mathematicians
The Franklin Institute
A collection of math related cartoons
 Mathematicians of the Seventeenth and Eighteenth Centuries
 A Chronology of Mathematician
 Pronunciation Guide to Mathematicians

 Vatican Exhibit
  List of Many Universities
  Taxas de Câmbio