# Smarter Internet Searching Boolean Operators. 11/14/2009Mrs. Rooley What are Boolean operators? FThe terms “AND, OR, & NOT” when used in Internet searches

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<ul><li><p>Smarter Internet Searching Boolean Operators </p></li><li><p>11/14/2009Mrs. RooleyWhat are Boolean operators? The terms AND, OR, &amp; NOT when used in Internet searches are called Boolean operators </p><p>Mrs. Rooley</p></li><li><p>Why do we call them Boolean? George Boole was an English mathematician who lived from 1815-1864He invented a branch of mathematics called Boolean algebraHis theories formed the basis for using Boolean operators in Internet searches </p></li><li><p>How do you use Boolean operators? Using AND:Using AND narrows a search by combining terms; it will bring back documents that use both the search terms you put in, for example: Portland AND Oregon</p></li><li><p>Using OR Using OR broadens a search to include results that contain either of the words you type in. OR is a good tool to use when there are several common spellings or synonyms of a word, for exampleTheatre OR theater </p></li><li><p>Using NOT Using Not will narrow a search by keeping out certain search terms. NOT brings back documents that contain one, but not the other,of the search terms you enter, for example:Jazz NOT Music </p></li><li><p>Heres another way to think about it: Search results are shown in green </p></li><li><p>Using Or </p></li><li><p>Using NOT Diagrams from http://tlt.its.psu.edu/suggestions/databases/search/booleansearch.html</p></li><li><p>Mini Quiz Which will get you the MOST results: ANDORNOT Answer: B. OR </p></li><li><p>Lets practice together: Now lets try it on the Internet with Google:</p></li><li><p>Smarter SearchingList 5 topics you want to know more about.List three key words that could be used to find information about each topic.EX. Swimmers, Olympic Swimmers, World Record Swimmers, Women Swimmers, etc. </p></li><li><p>Using ANDChoose one of your topics, What can you add to your search to get better results?Try a one word search, then try adding AND and a second word.Draw a Venn diagram showing your results. Label the circles and give a specific example of one of your search results.</p></li><li><p>Using ORNow do the same search using the OR operator between your two keywords.Describe what happened.Draw a Venn Diagram showing the results.</p></li><li><p>Using NOTSearch Google for jaguar, mustang or explorer. What are your results?Now search these terms adding NOT cars. What is the difference? </p></li><li><p>Shortcuts Not all search engines use Boolean operators in the same way You can use shortcuts in Google: + for AND - for NOT </p></li><li><p>Lets practice some more together: </p></li><li><p>Now youre going to try it on your own! </p><p>**************</p></li></ul>