A mixed family is one in which only one parent is formed, the children and a stepfather or stepmother.
Often people get married, and have children, but over time and for various reasons, this couple ends up getting divorced, the children continue to live with one of the parents and they end up remarrying someone who is not the father (or the biological) mother of those children. This ends up forming a new family, where not all members share the same blood, this is an example of a mixed family.
If one is working in a nursing home the residents are old so they cant hear as well as us usually. So you don't want to talk in a low voice, but you also don't want to yell.
