Trekking through the world of information

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  • 1.Image: 'flickr time' www.flickr.com/photos/86438096@N00/274238061 Trekking through theWorld of InformationEffective Search Strategies for Teachers

2. Definition of the Net TheInternetis the publicly accessible worldwide system of interconnectedcomputer networksthat transmit data bypacket switchingusing a standardizedInternet Protocol(IP).It is made up of thousands of smaller commercial, academic, domestic andgovernment networks. It carries various information and services, such aselectronic mail ,online chat , and the interlinkedweb pagesand other documents of theWorld Wide Web . 3. How big is the web?

  • 56 billion static web pagesare publicly available on the World Wide Web.
  • Another estimated 6 billion static pages are available within private intranet sites
  • 200+ billion database-driven pagesare available as dynamic database reports ("invisible web" pages)
  • Google.com indexes9.75 billionweb pages.

Image: 'Released to Public: Sinai Penninsula and Dead+Sea+from+Space+Shuttle+Columbia,+March+2002+(NASA)' www.flickr.com/photos/39735679@N00/491430005 4. Today

  • 200 billion pages
  • Only 50 Billion is static web
  • Google has only indexed 20%
  • Daily Web Space increases by 100,000 websites

Image: 'LOGO2.0 part I' http://www.flickr.com/photos/16851909@N00/93136022 5. Search Strategy

  • Choose appropriate key words
  • Select right tools
  • Evaluate Information

Image: 'http://www' www.flickr.com/photos/65919269@N00/557840620 6. Searching the Free Web Image: 'PSP Browser vs Landscape Dell X50v www.flickr.com/photos/44124452748@N01/29502230

  • Use Advanced Searching

7. A few search engines 8. Metacrawler 9. 10. Boolean Searching Add+ABC Minus-ABC DefaultDEF OR ABC Exact phraseABC Wild cardABC* SynonymABC~ 11. Samples OR NOT AND http://www.internettutorials.net/boolean.html 12. Deep Web

  • The invisible webis a vast repository of information that search engines don't have access to, such as databases
  • Private networks,called intranets, that are not actually hooked up to the Web
  • Forms , like ColdFusion or CGI
  • Password-protected sites , like a university library
  • Sites thatintentionally,for various reasons, keep their information from being indexed by search engine spiders

Image: 'Andromeda, again.' www.flickr.com/photos/13447091@N00/251478651 13. Effective habits:

    • What do others like?
    • Use The "Three Strikes" Rule
    • Don't Play Favorites
    • Use Specialized Search Sites

Image: 'no denial' www.flickr.com/photos/60648084@N00/2462966749 14. Web Evaluation Techniques Before you click to view the page...

  • Look at the URL -personal page or site ?~or% orusersormembers
  • Domain name appropriate for the content ? edu, com, org, net, gov, ca.us, uk, etc.
  • Published by an entity that makes sense ?
      • News from its source?
          • www.nytimes.com
      • Advice from valid agency?
          • www.nih.gov/
          • www.nlm.nih.gov/
          • www.nimh.nih.gov/

15. Web Evaluation TechniquesScan the perimeter of the page

  • Can you tell who wrote it ?
      • name of page author
      • organization, institution, agency you recognize
      • e-mail contact by itself not enough
  • Credentials for the subject matter ?
    • Look for links to:
    • About usPhilosophyBackgroundBiography
  • Is it recent or current enough ?
      • Look for last updated date - usually at bottom

16. Web Evaluation Techniques Indicators of quality

  • Sources documented
      • links, footnotes, etc.
        • As detailed as you expect in print publications ?
      • do the links work ?
  • Information retyped or forged
      • why not a link to published version instead ?
  • Links to other resources
      • biased, slanted ?

17. Web Evaluation Techniques What Do Others Say ?

  • Search the URL in alexa.com
    • Who links to the site? Who owns the domain?
    • Type or paste the URL into the basic search box
    • Traffic for top 100,000 sites
  • See what links are in GooglesSimilar pages
  • Look up the page author in Google

18. Web Evaluation Techniques STEP BACK&ASK:Does it all add up ?

  • Why was the page put on the Web ?
      • inform with facts and data?
      • explain, persuade?
      • sell, entice?
      • share, disclose?
      • as a parody or satire?
  • Is it appropriate for your purpose?

19. Try evaluating some sites...

  • Search a controversial topic in Google:
    • "nuclear armageddon"
    • prisons danger
    • stem cells abortion
  • Scan the first two pages of results
  • Visit one or two sites
    • try to evaluate their quality and reliability

20. Other Internet Politics

  • Copyright, Fair Use & Plagiarism
  • Where did the info come from?
    • public domain? creative commons?
    • Giving credit

21. Citation Generator 22. http: //theconnectedclassroom . wikispaces . com/Digital_Images What about images? 23. 24. Why Use NetTrekker?

  • Searches are Academically relevant

Image: 'Questions' http://www.flickr.com/photos/42788859@N00/318947873 25. Why Use NetTrekker?

  • Educator reviewed & evaluated
  • Aligned to state standards
  • Read Aloud
  • Rated by readability level

Image: 'question mark ?' www.flickr.com/photos/49968232@N00/12364944 Image: 'question mark ?' www.flickr.com/photos/49968232@N00/12364944 26. http://middle.nettrekker.com/userinfo/pa.epl Register Create User Name Passcode & enter YOUR IUS Keyword 27. Regular Logon school.nettrekker.com 28. 29. 30. 31. 32.

  • Keyword
    • Web
    • Persons
    • Images
    • Standards
  • Drill down through headings
  • Timeline
  • Elementary Theme Search

33. Lets Start Searching!