This card game has students practice substituting a number in for a variable. Students play in small groups, and for each turn, students must calculate the value of their cards to identify a winner. A different value for x can be chosen every time the game is played to keep it exciting. Great for remedial learners and gifted learners or for use when students need a break from their regular seat work. It makes Algebra fun and is a great way to reinforce class lessons.