A simple guide to using the Dewey Decimal
- Slides: 25
A simple guide to using the Dewey Decimal System
Melvil Dewey • In 1876 an American librarian named Melvil Dewey made up a way of classifying books called the ‘Dewey Decimal Classification System’ • This system is now used in most libraries all over the world. • It uses 10 categories of numbers, with decimal places to group similar things together
Dewey Decimal System Puts similar things together
Ten Main Classifications in Dewey’s System • The world’s knowledge is divided into 10 categories or groups. • Each group has a name and is represented by three numbers.
Dewey Decimal System Sea creatures 591. 77 Insects 595. 7
You Can Judge A Book by Its Cover! 000 Mea 200 Bya 500 Lee • The Dewey Decimal Classification call number can be found on the spine label. Why? • When the book is shelved, the Dewey Decimal Classification call number can be easily seen.
The Big Ten! • • • Generalities – 000 Philosophy – 100 Religion – 200 Social Science – 300 Language – 400 • • • Science & Math – 500 Technology – 600 The Arts – 700 Literature – 800 Geography & History - 900 The Dewey Decimal System brings order to the library.
Dewey System - 000 s • General Knowledge • Encyclopedias • Books about libraries & museums • Journalism • Computers • Controversial or unexplained topics
Dewey System - 100 s • Psychology • Philosophy • Thinking about ourselves • Who am I? • Why am I here? • Ideas
Dewey System - 200 s • • Beliefs Religions Mythologies Where did we come from? • Who created us?
Dewey System - 300 s • Communities - Learning to get along together • • • Trade Commerce Politics Government Education Law Transport Welfare Folk lore and fairy tales
Dewey System - 400 s • Languages • How do we communicate with each other?
Dewey System - 500 s • Natural Science • Maths • Nature and the world around us • • • The universe The earth Animals Birds Reptiles Fish
Dewey System - 600 s • Applied Science • Technology • How we have changed the natural world to make it more useful • Anything that people invent, engineer, grow, manufacture, process and build
Dewey System - 700 s • Sport • Recreation • How people use their leisure time • • Art Craft Dance Music
Dewey System - 800 s • Literature • The stories, poems and plays people write in their leisure time
Dewey System - 900 s • • • Geography History Biographies The rest of the world How they live now How they lived long ago
How do the numbers work? • The system uses numbers. The numbers have meaning, so that books on the same topic are grouped together. • Each book gets at least 3 digits (for example, 543) • After the third digit, a decimal point is placed and as many digits as necessary can be added after the decimal.
How do the numbers work? • A number can be taken apart digit by digit to get its meaning: 979. 4 History United States Pacific Coast California
How do the numbers work? • 500 - Natural Sciences • 590 - Zoological science (animals) • 595 - Spiders, insects, crustaceans (animals without backbones) • 595. 7 - Insects • 595. 78 - Lepidoptera (creatures with 4 wings & scales) • 595. 789 - Butterflies
Location Codes • • E – Early Book (“Easy” nonfiction) J - Juvenile REF – Reference Middle School nonfiction starts with the Dewey number
Book Labels / Call Numbers • Location code (specific to our Library) • Dewey Decimal number • First 3 letters of the author’s last name J 595. 789 Ter
Flashback! What Do You Remember? • Who created the Dewey Decimal Classification System? • What does the DDCS do for our library? • How many main classifications are there? • Where do you find the DDCS number on a library book?
In a decimal system, books are filed digit by digit--not by whole number. Look at this example, It may also help to just add zeros to the 331 decimal numbers. For example, 331. 011 331. 7800 331. 016 331. 0650 331. 02 331. 3090 331. 0166 331. 026 331. 2000 331. 04136 Which call number comes first? 331. 042 331. 1 311. 0942 311. 07 331. 198 311. 116 331. 2 311. 018 311. 126
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