This is a great (and fun!) way to review equations. There are 6 levels of progressing difficulty. Begin by giving all groups Level 1 (one copy for every student). In order to progress to the next level, each group must correctly answer all four questions. The energy gets intense and students compete against the clock to finish all 6 levels!
This Common Core aligned resource begins with evaluating expressions and progresses to variables on both sides and equations with rational numbers.