KIDS!

TEACHER: How old were you on your last birthday?
STUDENT: Seven.
TEACHER: How old will you be on your next birthday?
STUDENT: Nine.
TEACHER: That's impossible.
STUDENT: No, it isn't, Teacher. I'm eight today.

TEACHER: George, go to the map and find North America.
GEORGE: Here it is!
TEACHER: Correct. Now, class, who discovered America?
CLASS: George!

TEACHER: Willy, name one important thing we have today that we didn't have ten years ago.
WILLY: Me!