Developmental Milestones:  Motor Development.   The unfolding of biological potential is known as maturation.    Motor skill development in babies is mostly controlled by the process of maturation.    Think about a child that you have known (yourself, your own child, a friend or family member).  Describe how the child progressed from rolling over, to sitting, standing, and walking.  At what age did each milestone occur?   Did the development occur in a typical sequence based on what you”ve learned in your text?   Is there anything that occurred in the child”s environment that either delayed motor development or facilitated it?   What is the difference between maturation and learning, based on your readings and observation?