Lightweight soft foam allows for quiet individual or group activities and game play. Jumbo size makes them easy for younger students to manipulate. Use for sorting, patterning, arithmetic, fractions and logic problems. Set of 28 double-6 dominoes comes in 6 bright colors with white dots. Activity Guide and storage case included. Dominoes measure 5"L x 2/5"W x 3"H each. Grades K+ . Set of 28.