Campus Student Organizations

• Mathematical Advancement Through Research and Idea eXchange (MATRIX)
• Undergraduate Association for Women in Mathematics (uAWM)
• Illinois Student Chapter of the Association for Women in Mathematics (AWM) (Graduate Student Chapter)
• Illinois Mathematics Lab Outreach Group
• UIUC SIGma, a special interest group for math via the Association for Computing Machinery (ACM)

National Organizations

• Mathematical Association of America (MAA) -- Devoted to college level mathematics
• Society for Industrial and Applied Mathematics (SIAM)
• American Mathematical Society (AMS) -- The professional organization for research mathematicians
• Society for Mathematical Biology

Journals

Each of these journals is available online or in the Mathematics Library. All are either devoted to collegiate level mathematics or contain articles that are accessible to an undergraduate student. 

• Math Horizons -- of general interest for undergraduate mathematics majors
• Furman University Electronic Journal of Undergraduate Mathematics
• Mathematics Magazine
• American Mathematical Monthly
• The College Mathematics Journal
• Pi Mu Epsilon Journal
• Quantum -- for teachers of math and science
• The Mathematical Intelligencer
• Le Journal de Maths des Eleves
• Communications in Visual Mathematics

Other Links

• Math Archives -- a comprehensive site for mathematics on the Internet
• Mathematics WWW Virtual Library, maintained at Florida State University
• Mathematical Digest
• Historical
  • History of Mathematics maintained by David Joyce at Clark University
  • 17th and 18th century mathematics according to W.W. Rouse Ball
  • The MacTutor History of Mathematics Archive