The best mathematics encyclopedia we've ever seen. Eric Weisstein's World of Mathematics
A site with qualifying quiz questions The MathPath program
at MAA Online. Great articles on developments of mathematics and its uses in science. Math News
A Mathematics Magazine for high school students Pi in the Sky
Many resources for the Olympiad-level student, and also a basic geometric construction tool. Mathematical Database
Numerous interactive articles on mathematics as well as other mathematical curiosities. Interactive Mathematics Miscellany
State test 2003 Book1 http://www.emsc.nysed.gov/osa/mathei/matheiarch/G8Math_Book1.pdf
State test 2003 Book2 (multiple choice solutions are at: http://www.emsc.nysed.gov/osa/mathei/matheiarch/G8Math_Book2.pdf
State test 2005 Book1 http://www.emsc.nysed.gov/3-8/math-sample/gr8bk1.pdf
State test 2005 Book2 http://www.emsc.nysed.gov/3-8/math-sample/gr8bk2.pdf
State test 2005 Book3 http://www.emsc.nysed.gov/3-8/math-sample/gr8bk3.pdf
State test 2005 Solutions And Scoring Guide http://www.emsc.nysed.gov/3-8/math-sample/gr8sg.pdf
State test 2006 Book1 http://www.nysedregents.org/testing/mathei/06exams/gr8bk1.pdf
State test 2006 Book2 http://www.nysedregents.org/testing/mathei/06exams/gr8bk2.pdf
State test 2006 Book3 http://www.nysedregents.org/testing/mathei/06exams/gr8bk3.pdf
State test 2006 Multiple Choice Solutions http://www.nysedregents.org/testing/mathei/06exams/gr8im.pdf
State test 2007 Book1 http://www.nysedregents.org/testing/mathei/07exams/gr8bk1.pdf
State test 2007 Book2 http://www.nysedregents.org/testing/mathei/07exams/gr8bk2.pdf
State test 2007 Book3 http://www.nysedregents.org/testing/mathei/07exams/gr8bk3.pdf
State test 2007 Multiple Choice Solutions http://www.nysedregents.org/testing/mathei/07exams/gr8im.pdf
State test 2004 Book1 http://www.emsc.nysed.gov/osa/mathei/grade8mathbook1may04.pdf
State test 2004 Book2 http://www.emsc.nysed.gov/osa/mathei/grade8mathbook2may04.pdf