Site has worksheets with 10 levels and increasing complexity from one variable/one step/no exponents to up to three variables and five steps (and everything in between).
This website is loaded with links to lessons, activities, and games for students of all ages. Left and right sidebars list the courses or activities you may want to share. Take some time to check out the links; there definitely is a lot there for students to use as a practice or review tool.
Look at the fraction in the grass and steer the helicopter into the equivalent fraction "clouds." Be careful not to crash into the wrong "cloud" or lose gas and crash into the ground.
This game is designed to strengthen math vocabulary. The letters of the alphabet are on the bottom of the page, and you drag the letters to the shapes/symbols where you think they belong. It looks like Hangman. It would be a good idea to model this to the class before letting them try it solo.
More than two dozen integer games, ranging from ordering on a number line to comparing integers during a "space race." There also are worksheets galore for using integers with all four operations.
Program for students to create three different interactive graphs based on data they collect. Cool component: program creates 8 multiple choice questions based on the data they collected! Graphs also can be printed.
Choose two games with three levels of "pitches" : Identify the exponent in expanded form or identify the power. Examples are given, and players can play in "practice mode."
Basic metric conversions game -- no frills, but it provides immediate feedback. Check out the other activity; there is a print out worksheet for students to complete afterward.