Mathscape Self-Check Quizzes - Course 2 [Blue Book] http://www.glencoe.com/sec/math/mathscape/2005/course2/phase/index.php/wa
Mathscape Online Text - Course 2 [Blue Book] Access Code: F8E4F9D352 Copy and paste this code for access to online textbook. http://www.glencoe.com/ose/
Mathematics: Applications and Concepts - Course 2 [A more "traditional" approach, with additional practice.] Access Code: AE33A5C840 Copy and paste this code for access to online textbook. http://www.glencoe.com/ose/
National Library of Virtual Manipulatives http://nlvm.usu.edu/en/nav/vlibrary.html
A math dictionary for kids :) http://www.teachers.ash.org.au/jeather/maths/dictionary.html
Free Math Worksheets http://www.math-drills.com/
Ask Dr. Math http://mathforum.org/library/drmath/drmath.middle.html
Math League http://www.mathleague.com/help/help.htm
Web Math http://www.webmath.com/
Math.com http://www.math.com/
A+ Math http://www.aplusmath.com/
Cool Math http://www.coolmath4kids.com/
Purple Math http://www.purplemath.com/modules/index.htm
Brain Teasers http://www.eduplace.com/math/brain/
Interactivate http://www.shodor.org/interactivate/
BrainPop http://www.brainpop.com/
Middle School Problem of the Week http://mathforum.org/prealgpow/
AAA Math http://www.aaamath.com/
Mathscape Self-check Quizzes - Course 3 [Green Book] http://www.glencoe.com/sec/math/mathscape/2005/course3/phase/index.php/wa
Mathscape Online Text - Course 3 [Green Book] Access Code: FE3C71F32D Copy and paste this code for access to online textbook. http://www.glencoe.com/ose/