College comp


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The Boolean Logic, Searching the Internet and Evaluating Websites

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College comp

  1. 1. Welcome Mrs. Powell’s College Comp Students!<br />Sit at any computer and login using your username. <br />Go to<br />Think: What is the author of this cartoon saying about the Internet?<br />
  2. 2. Respond:<br />Using the link Today’s Meet on Mrs. Maldonado’s Blog – “What is the author of this cartoon saying about the Internet?”<br />
  3. 3. Searching with Success<br />Why is how we search the Internet important?<br />
  4. 4. Search Engine <br />Information is collected by a computer program and indexes all of the information<br />Provides a huge number of sites <br />Search Directory<br />People, not computers, index information. <br />Editors evaluate Web sites and organize them into subjects. <br />Number of sites are much smaller, but higher quality<br />Search Engine VS Search Directory<br />
  5. 5. Your science teacher tells you to find out if mercury is toxic. <br />Type mercury and hitting the enter key.<br />How many pages are retrieved?<br />About 75,000,000 <br />Look over the description of the first few sites. What are they about?<br />Mercury Vehicles<br />Mercury Element<br />Mercury Planet<br />PRACTICE<br />
  6. 6. The Boolean Logic <br />Searching technique that can narrow your search to a reasonable number of results, and increase your chance of having useful results<br />Consists of three operators or commands<br />OR<br />AND<br />NOT <br />Conducting a Successful Search<br />
  7. 7. AND<br />Means “I want only documents that contain both/all words.”<br />OR<br />Means “I want documents that contain either word.”<br />(AND) NOT<br />Means I want documents that contain this word, but not if the documents contains another word. <br />Boolean Basics<br />
  8. 8. Each operator can be visually described by using Venn diagrams. <br />OR logic<br />QUESTION: I would like information about college.<br />college OR university <br />The OR logic retrieves records in which AT LEAST ONE or both of the search terms are present. <br />Boolean Basics<br />
  9. 9. AND logic<br />QUESTION: I am interested in the relationship between poverty and crime.<br />poverty AND crime<br />The AND logic retrieves records in which BOTH of the search terms are present. <br />Boolean Basics<br />
  10. 10. NOT logic<br />QUESTION: I want information about cats, but I don’t want to see anything about dogs.<br />cats NOT dogs<br />The NOT logic retrieves records in which ONLY ONE of the term is present, excluding records from your search results. <br />Boolean Basics<br />
  11. 11. Your science teacher tells you to find out if mercury is toxic.<br />Mercury has many different meanings. How can we use the Boolean operators to narrow down our search?<br />PRACTICE<br />
  12. 12. 5 Keys to Evaluating Web Pages<br />
  13. 13. What can the URL tell you?<br /><ul><li>Is it somebody’s personal page?
  14. 14. What type of domain does it come from?
  15. 15. Government - .gov or .mil
  16. 16. Educational - .edu
  17. 17. Non-profit - .org
  18. 18. Who published the page?
  19. 19. Have you heard of the agency or person?
  20. 20. Does it correspond with the name of the site?</li></li></ul><li>Scan the web page<br /><ul><li>Look for About Us, Philosophy, Biography, Background, etc.
  21. 21. Determine who wrote the page
  22. 22. Looking for someone claiming accountability or responsibility
  23. 23. Is the page dated? Is it current enough?
  24. 24. What are the author’s credentials on the subject?</li></li></ul><li>Indicators of quality information<br /><ul><li>Look for types of publications
  25. 25. Are sources documented with footnotes?
  26. 26. Where did the author get their information from?
  27. 27. Is the information complete, not altered, fake or forged?
  28. 28. Are there links to other sources</li></li></ul><li>What do others say?<br /><ul><li>What other pages link to this site?
  29. 29. View page information
  30. 30. Is the page listed in one or more reputable directories or pages?
  31. 31. What do others say about the author?
  32. 32. “google” the author</li></li></ul><li>Does it add up<br /><ul><li>Why was the page published?
  33. 33. The purpose
  34. 34. Is it a parody?
  35. 35. Is this as creditable and useful as other print resources.</li>