Boolean Operators

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  • The and operator tells the computer that both terms must be present in the record. The terms may or may not be in a phrase. The more terms that are linked with an and operator, the smaller the results will be.
  • The and operator tells the computer that both terms must be present in the record. The terms may or may not be in a phrase. The more terms that are linked with an and operator, the smaller the results will be.
  • Boolean Operators

    1. 1. Let’s Boolify!
    2. 2. BOOLEAN OperatorsSpecial terms used to combine keywords AND, OR, NOT
    3. 3. BASIC SEARCHkeyword keyword 1 2
    4. 4. AND keyword 1 AND keyword 2Gives a result that contains all the keywords
    5. 5. AND frogs AND toads Gives a result that contains both frogs and toads
    6. 6. Hands-On• Protecting the rainforest to provide homes to the animals rainforest AND animals• Pollution and how it affects fishes fish AND pollution
    7. 7. OR broadens a search keyword 1 OR keyword 2 adolescent teenagerResults will contain any or all keywords.
    8. 8. OR frogs OR toadsResults will contain frogs or roads or both
    9. 9. NOT -minus sign keyword 1 –keyword 2
    10. 10. NOT -minus sign frogs -toads Results will contain frogs but not toads
    11. 11. Hands-On• What are the other ancient civilizations aside from Ancient Greece? Ancient civilization - Ancient Greece
    12. 12. EXACT SEARCH “keyword” Result will contain exact words, in exact order “Ancient China” “whale sharks” “Amazon rainforest”
    13. 13. Quick Tips for Keyword Searching• Choose keywords to represent the most important concepts in your topic.• Use “AND" to combine different keywords and narrow your search.• Use “OR“ to find alternate keywords and broaden your search.• Use “-” to limit a broad topic
    14. 14. www.boolify.org
    15. 15. AND OR NOTWhat is video piracy? video AND piracy
    16. 16. AND OR NOTFind out about hurricanes. Hurricanes OR storms OR typhoons
    17. 17. AND OR NOT What are the causes of pollution in Thailand? pollution AND Thailand
    18. 18. AND OR NOT What spiders do not live in the forest? spiders NOT forest
    19. 19. AND OR NOTName other scientists other thanAlbert Einstein.Scientist –”Albert Einstein”

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