This 144-piece set includes square-, triangle- and circle-shaped plastic links which join together through the narrow gap on each piece. Colors are: red, yellow, orange, blue, green and purple. Geo Links assist with the development of early math skills such as sorting, counting, patterning and sequencing. Children can also use Geo Links as a hands-on resource during addition and subtraction lessons. Geo Links develop language, shape and color recognition skills as children find the next piece to connect. Foster fine motor, logic and reasoning skills as children connect various shapes and colors. Encourage children's creativity as they create their own designs. Made with durable plastic, these manipulatives are ideal for home or classroom learning. Geo Links are packaged in a plastic jar with lid for easy cleanup and storage. Size of square: 1.1" W. For ages 3+.