invented the Dewey Decimal Classification (DDC)
at the age of twenty one years old while working as
a student assistant in the library of Amherst College.
invented the system to make it easy to find
materials in all libraries. He also founded the
American Library Association.
The Dewey Decimal System is
divided into ten categories/parts
What is a call number?
A call number is made up of
the letters and numbers on
the spine tag.
A call number is the book’s
address on the shelf.
Call numbers are Dewey
The call number might be
all letters or some letters
and some numbers
Fiction books DO have Dewey Call
numbers—books by American authors
all have the Dewey number 810—but
there are so many, we leave that off
and they are shelved with call
numbers E (first three letters of the
author’s name, or F (first three
letters of the author’s name)
Fiction Books are not true
Everybody book section or in the
Chapter books section.
Non-fiction Books are true
Dewey section of our library.
Not EVERY book in the Dewey
section is non-fiction. Fairy tales are
000-Computers, The unexplained
(UFOs, Big Foot)
030-Encyclopedias & Almanacs
360-Drugs, the environment
380-History of Transportation
390-Holidays, Folklore and Fables
Science and Math
530-Physical science (motion)
550-Weather, Earthquakes and Volcanoes
580-Plants and trees
Science and Technology
610-The Human Body•620-Space ships, trains, and
630-Pets and farm animals
640-Cookbooks, organizing, sewing
650-Jobs and management
670 and 680-Manufacturing
700-799 The Arts
810-Poetry, plays, jokes and riddles (American fiction goes here—the
everybody books and the chapter books but we don’t put the
820-Shakespeare and other books by British authors (Harry Potter)
880-Greek and Roman
900-999 History and Geography
940-Knights, Castles, Europe, WWI and WWII
950-Asia and the Middle East
970-North and Central America, State books
990-The Pacific Islands, Australia
So….if you know the Dewey Decimal
System you can….
Find books to help you with research
Find books about things you think are
Find books for your hobbies
And even get better grades…