Think about families you know. Each family has its own history. This history can be shown in a family tree. A family tree is a diagram, or a picture that shows the parts of something.
A family tree shows the members of a family and their ancestors. Ancestors are family members who lived before you. Some ancestors you can see in a family tree are grandparents, parents, sisters, brothers, and cousins.
Here is a family tree for a girl named Sadie.
