MAA American Mathematics Competitions (AMC)
AMC recognizes and rewards excellence in mathematics through a series of national contests. The site contains an archive of past questions used in AMC competitions and sample questions are available to download.
Virtual Source Programming Contests
This site offers a number of math contests for individuals and teams.
Al Zimmermann's Programming Contests
This online community features challenging mathematical and programming problems.
MATHCOUNTS
MATHCOUNTS is a national enrichment, club and competition program that promotes middle school mathematics achievement through grassroots involvement in every U.S. state and territory.
National Association of Math Circles
Math circles are a form of education enrichment and outreach that bring mathematicians and mathematical scientists into direct contact with pre-college students in an informal setting, after school or on weekends, to work on interesting problems or topics in mathematics. The goal is to get the students excited about the mathematics. Check the site for a Math Circle in your area or visit the pages below.
