At the very first stage of learning, it's not the books but the toys that serve the purpose. Such toys are designed to develop motor skills of children and acquaint them with the basic knowledge of colors, shapes and much more. The circle sorter features a wooden plate having molds with colored bases that are to be filled with the circular discs of same color. The discs size from 2 to 5 inches in diameter and are topped with 2 inches high knob for making it easier for little hands to grasp them. The Guidecraft Circle Sorter is designed for kids from 9 months to 7 years