These are some great math website for interactive games.
A Plus Math
Cool Math
Math Playground
Math is Fun
Here are some additional resources for 6th grade math.
IXL Math Skills- The skills are organized into categories, and you can move your mouse over any skill name to see a sample question. To start practicing, just click on any link. IXL will track your score, and the questions will even increase in difficulty as you improve!
Math Drills - This website has lots of great worksheets for extra practice.
Khan Academy - A collection of FREE online videos suitable for 6th grade math and higher.
Math Minutes Practice Games – these are great to work on your addition, subtraction, multiplication, and division. You can choose how many minutes and how many problems you want to work on each time.
Sadlier-Oxford Website – this is the website for our 6th grade math textbook
Public Schools of North Carolina – Math 6-8 Resources
Learn NC – NC Standard Course of Study and Aligned Resources for Math 6