Final answer:
Motor milestones are achieved through a developmental sequence where infants progress from simple reflexes to advanced motor skills like walking. Developmental concerns should be discussed with a pediatrician, especially if a child shows multiple milestone delays.
Step-by-step explanation:
Motor milestones are met during the process of physical development in infants and toddlers. For instance, these milestones follow an orderly pattern where initially, infants achieve head control, followed by sitting with assistance, sitting unassisted, crawling, and ultimately walking.
By the age of three, children have developed their gross motor skills for activities such as climbing and can manage stairs with one foot per step. Their fine motor skills are also well-developed, which allows them to handle small objects and complete simple puzzles.
It is crucial to monitor these developmental milestones, as they come with a range of ages at which they are typically achieved. Concerns arise when a child shows delays in multiple milestones, which should be discussed with a pediatrician, as early intervention can help address potential developmental delays.