Microsystem is defined as the immediate settings with which the child interacts, such as the home, the school, and one's peers; the people and objects in an individual’s immediate environment; the immediate settings which include role relationships and activities that the person actually encounters.
It is the innermost of Bronfenbrenner’s environmental layers or contexts Microsystem, moreover is the pattern of activities, roles, and interpersonal relations experienced by the developing person in a given setting with specific physical and material characteristics; and the immediate setting where a child is at a particular time, such as the family, the school, the neighborhood, and so on).