Three developmental Stages that will include Toddlerhood, Middle Childhood and Adolescence.
Toddlerhood: Toddlers love a routine. At this stage, if a routine is thrown off, it is likely that the toddler will become upset and struggle with their emotions. Also, by this age, they are able to begin to do small things on their own. Small signs of independence begins to show.

Middle Childhood: One of the big ones of this is that the kids begin to develop a sense of who they are. They begin to have an identity of themselves. They have understandings now and they start to really know right from wrong.

Adolescence: They now know who their best friends are. Communication skills begin to get to their highest level. They hit puberty at this stage. They begin to establish a sense of individuality and independence among themselves.