- Problem of the Week (Purdue University).
- Revista Escolar de Matemáticas, España.
- La Gaceta de la Real Sociedad Matematica Espanola, España.
- Internet Links of Interest (Boston College).
- Art of Problem Solving (specially-designed resources for eager math students).
- Interactive Mathematics Miscellany and Puzzles.
- International Mathematics Olympiad.
- Gazette of the Australian Mathematical Society.
- Games, Puzzles and Problems (Canadian_Content).
- Mathematical Reflections, USA.
- Pi Mu Epsilon Journal, USA.
- Missouri Journal of Mathematical Sciences, USA.
- Monthly Puzzles (IBM_Research).
