Take it to Your Seat Math Centers, Grades 4-6 has 15 self-contained centers presented in folders. 9 centers are intended for individual practice; 6 centers are constructed for pairs of students. Individual skills practiced include the following: percentages; equivalent weights; coordinate graphing; measuring angles; geometric shapes; mean and median; word problems; money; word problems; perimeter; positive and negative integers (temperature); understanding math symbols. Partner skills practiced include: geometric shapes; number order; word problems with time multiplication (factors and products); decimals; equivalent fractions.