The Learning Resources Double-Six Dominoes are ideal for addition, subtraction and fraction activities. They are color-coded and are conveniently packaged in a storage bucket. You can easily differentiate the kids dominoes game to support different learning levels in the classroom or at home. Subject Area: Mathematics; Specific Subject: Addition & Subtraction; Counting & Matching; Age Recommendation: Ages 5 to 9; Grades: Grades K to 4.