Family Tree

http://www.yangfamilytaichi.com/yang/tree/
A family tree is a mental map of someones ancestry. It can begin with a current person and go back in time with parent, grand parent etc, or start from a person and go foward, kid, grand kids etc. Family Trees are good for understanding how you are connected to your cousins, second cousins and farther fringes of your family. The tree above begins with Yang Fu Kui born in 1799 and ends with people being born in 2002. The maps can show multiple generations with lots of branches or be  small and only show a handful of people.