Columbia subject headings:
Computer-assisted instruction--Study and teaching--United States.
Education--Data processing--Study and teaching--United States.
Educational technology--Study and teaching--United States.
Teachers--Training of--United States.
Harvard subject headings:
Princeton subject headings:
Computer-assisted instruction--Study and teaching--United States.
Education--Study and teaching--United States.
Educational technology--United States.
Teachers--Training of--United States.