It’s easy to become overwhelmed, confused and even worried when you are learning about developmental milestones. Milestones were created to serve as guidelines for a set of functional skills or age-specific tasks that most children can perform during a certain age range. Parents and pediatricians use these guidelines to help evaluate how your child is developing. The most important piece of information to remember is that every child is unique and that the actual age when a developing child reaches a specific milestone can vary.