Teenager
From the Simple English Wikipedia, the free encyclopedia that anyone can change
A teenager is a young person whose age is between thirteen and nineteen. They are called teenagers because their ages end in teen.
Teenagers go through a lot of changes during this time. This is called adolescence or puberty. In the United States, some teenagers go to middle school and some go to high school. In the United Kingdom, teenagers and non-teens mix in secondary school.

