Baby discovers the world through her hands and mouth during her first year. The baby rattle's textures and colors, along with the large, smiling face that appears on it, provide rich sensory stimulation that encourages baby's sense of sight.
Hold the starry rattle at a distance of 10-12 inches from your baby and give her some time to try and focus on its smiling face.
It may be hard for baby to willfully grasp objects at this stage. When you hand her My First Rattle-Star, wait a little bit to allow him to close his fingers around the ring in a firm grasp.