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Dewey Decimal System of Classification. I’ve got your number!. Classification:. A method for grouping items together with similar qualities. The groups are often called categories or classes. In the Dewey Decimal System of Classification, all
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Dewey Decimal System of Classification I’ve got your number!
Classification: A method for grouping items together with similar qualities. The groups are often called categories or classes.
In the Dewey Decimal System of Classification, all nonfiction books are classified (grouped) by subject. So, books about similar subjects are placed together on the shelf.
Melvil Dewey invented the Dewey Decimal System of Classification in 1876. Brilliant!
Classification Systems are used in many places you visit, such as grocery stores.
How the System Works Dewey came up with 10 Main Classes for organizing books. He assigned a number and a subject for each of the main classes.
10 Main Classes 000s - Generalities 100s - Philosophy & Psychology 200s - Religion 300s - Social Sciences 400s - Language 500s - Natural Sciences and Mathematics 600s - Technology 700s - The Arts 800s - Literature 900s - Geography and History
So remember.. …library books have class!
Then, he subdivided each class into divisions of 10s and gave them names. For example, the 500s class: 500 Natural Sciences and Mathematics510 Mathematics 520 Astronomy 530 Physics 540 Chemistry 550 Earth sciences & geology 560 Fossils & prehistoric life 570 Life sciences; biology 580 Plants (Botany) 590 Animals and Insects (Zoology)
Then, he subdivided each division into sections and gave them names: • Animals & Insects • Body Systems of Animals and Insects • Invertebrates ,Worms • Sea Invertebrates, Coral • Mollusks, Octopus, Squid, Snail • Insects, Spiders • Vertebrates 597 Fish, Amphibians, Frogs, Snakes • Reptiles and Birds • Mammals of the Land and Ocean
Then, he added decimal points and more numbers for very specific subjects. 597 Fish 597.5 Fish with moveable upper jaws 597.51 Moray eels 597.52 Carp 597.53 Sea Horses Dewey Decimal number is typed on a label and placed on spine of the book. Sea Horse Book By Sam Smith 597.53 SMI
The spine labels on the books guide the order for placing books on a shelf! The books are shelved in Dewey/Alphabetical order. How nice to have all the fish books together on the shelf!
Now you are ready to “Do the Dewey!”