This site offers a variety of videos and interactive activities as well as printable exercises. Be sure to allow pop-ups (tools, turn off pop-up blocker).
This site is wonderful for introducing or practicing middle school skills.
Remember that this is a challenge activity for this grade level!
Use this site to find fun games which will help you with all types of math skills.
This site offers a variety of practice organized by skill.
Note that this skill is part of the Unit 1 challenge. See how changing variables affects a box and whisker plot.
This is a great place to practice these skills and see a visual of what you're doing. You need to scroll down to see the instructions.
This site has many teacher made videos that deomostrate a variety of middle and high school math concepts.
Take the quiz to see how you do. These problems are not easy!
This site has a variety of middle school math sites. Good graphics for practice.