MathCounts

Mathcounts 是美国的一个给6－8年级中学生参加的数学竞赛。从1983年开始，通过学校、地区、州级、国家级四级选拔，评选出一个个人冠军和一个团体（州）冠军。各级竞赛分成三个阶段：Target，Sprint，Team 和 Countdown。 在加拿大的不列颠哥伦比亚省也有类似的竞赛MathChallengers（英语：MathChallengers），起始于2004年，规则和 Mathcounts 略有不同。 mathcounts.org Mathcounts locations. Mathcounts. [2008-02-07]. （原始内容存档于2007-12-30）.  Mathcounts was actually founded in 1982, but the current system of determining individual and team champions was not implemented until 1984. Mathcounts Winners (PDF). Virginia Society of Professional Engineers. [2008-02-10]. （原始内容 (PDF)存档于2008-02-16）.  Gene Spafford. Brainy Teen `Mathcounts' Champ. Yucks Digest. Vol. 2 No. 32. 13 June, 1992. Date List. University of Pennsylvania. [2008-02-07]. （原始内容存档于2007-02-12）.  It's A Fact! (PDF). Kentucky Engineering Center. [2008-02-07]. （原始内容 (PDF)存档于2009-03-20）.  Mathematically Correct. Mathematically Correct. [2008-02-07]. （原始内容存档于2008-05-11）.  Mathletes Compete In Washington On May 9. NASA.gov. [2008-02-07]. （原始内容存档于2009-10-28）.  Mathletes Compete In Washington On May 15. NASA.gov. [2008-02-07]. （原始内容存档于2009-10-28）.  Email, Subject "Math". NASA. [2008-02-07]. （原始内容存档于2005-01-09）.  1999 Diamond Team. William Diamond Middle School. [2008-02-07]. （原始内容存档于1999-10-13）.  Kentucky Results: 2000 National MATHCOUNTS Competition, May 12, 2000 - Omni Shoreham Hotel - Washington D.C.. Kentucky Engineering Center. [2008-02-07]. （原始内容存档于2008-05-15）.  The 2001 National Mathcounts and the National Mathconts for every year prior to that was held in Washington, D.C. Mathcounts locations （页面存档备份，存于互联网档案馆） 2001 MATHCOUNTS Competition Gives Them A Challenge. Virginia Society of Professional Engineers. [2008-02-07]. （原始内容存档于2009-01-06）.  New Jersey Mathcounts. New Jersey Mathcounts. [2008-02-07]. （原始内容存档于2012-09-06）.  MATHCOUNTS 2003 National Results. Kentucky Engineering Center. [2008-02-07]. （原始内容存档于2008-05-15）.  The students stayed at the national Mathcounts location between May 6 and May 9, with the actual competition taking place on May 7. MATHCOUNTS 2004 National Results. Kentucky Engineering Center. [2008-02-11]. （原始内容存档于2009-01-07）.  2004 National Mathcounts Champion. Kentucky Engineering Center. [2008-02-07]. （原始内容存档于2007-08-13）.  The students stayed at the national Mathcounts location May 5 and May 8, with the actual competition taking place on May 6. Louisiana Mathcounts. Louisiana Engineering Society Baton Rouge Chapter. [2008-02-07]. （原始内容存档于2004-09-04）.  Sugar Land Kids Won 2005 MATHCOUNTS National Champions. Beestar Educations. [2008-02-07]. （原始内容存档于2012-07-19）.  The students stayed at the national Mathcounts location May 11 and May 14, with the actual competition taking place on May 12. 2006 National Mathcounts Competition. American Society Of Mechanical Engineers. [2008-02-07]. （原始内容存档于2007-08-13）.  The students stayed at the national Mathcounts location May 10 and May 13, with the actual competition taking place on May 11. Kevin Chen, MATHCOUNTS National Champion, Wins Best Junior Achiever Relly Award from Live with Regis and Kelly. Business Wire. [2008-02-07]. （原始内容存档于2008-12-02）.  Texas Eighth Grader and Texas Team Awarded Mathematics Champions at Lockheed Martin MATHCOUNTS National Competition - 2007. PR Newswire. [2008-02-07]. （原始内容存档于2012-10-14）.  Mathcounts 2007-2008 important dates. Mathcounts. [2008-02-07]. （原始内容存档于2008-03-15）.  2009 Raytheon MATHCOUNTS® National Competition Results. [2009-06-28]. （原始内容存档于2009-02-17）.