A unique big chunky number blocks easy to stack. Stack your numbers and solve the equation! The height of each number block corresponds to its value. Stack a "2-block" on top of a "3-block" and they equal the same height as the "5-block." Difficult math concepts become fun and easy to understand games. Includes: 30 number wooden blocks, 2 dices and a guidebook Age: 3 , 5 , 8.