Challenge 24:
http://www.mathplayground.com/make_24.html
1 Step Equation Games:
http://www.math-play.com/soccer-math-one-step-equations-game/one-step-equations-game.html
http://www.mathplayground.com/AlgebraEquations.html
Gizmo: Modeling 1 Step Equations
www.explorelearning.com
2 Step Equations:
http://www.math-play.com/System-of–Equations-Game.html (Challenging)
Crossword puzzle (vocabulary):
http://www.math-play.com/equation-puzzle/equation-puzzle.html
http://www.math-play.com/equation-word-search/equation-word-search.html