Lesson 2 network and the internet
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ES298 Computer Education Learning Objectives: 1. Distinguish different information repositories in the World Wide Web 2.Know and apply knowledge of different types of search engines on actual web search process. 3. Apply Boolean techniques in Web Research 4. Create Learning Activities that develop students skills on Web Search
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Lesson 2 network and the internet
- 2. Learning Objectives: Distinguish different information repositories in the World Wide Web Know and apply knowledge of different types of search engines on actual web search process. Apply Boolean techniques in Web Research Create Learning Activities that develop students skills on Web Search
- 3. Networks and the Internet A network is a collection of computers and devices connected together. Allow computers to share resources: • Hardware • Software • Data • Information
- 4. Internet a vast, confusing mix of incredibly useful information and garbage. almost anything you want to know is there. Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals. Web Billions of documents, called Web pages, available to anyone connected to the Internet
- 5. Internet Uses? Communications Information Shopping Banking & Investing Education Entertainment Sharing information
- 6. Mining the Internet designed to help you to acquire the knowledge, skills, and experience necessary to locate and infuse use of information resources
- 7. What would you What would you need to search an need to find information in the buried treasures? internet? a map, tools to do • URL(Uniform Resource the digging, and a container to Locator) transport what • Search engines has been found, • ability to distinguish ability to facts. distinguish gold from garbage • ways to transfer the and a way to information that you travel. acquired online to other documents
- 8. Information Repositories in the World Wide Web
- 19. Other Popular Search Engines: http://www.msnbc.msn.com/ http://go.com/ http://excite.com/ http://about.com/ http://home.iwon.com/iwon-homepage/home.jhtml http://search.looksmart.com/ http://dogpile.com/ http://www.search.com/ http://kids.yahoo.com/
- 22. 1.Click Start button 2. On the pop-up menu click Internet Explorer Icon or on the Desktop Click Internet Explorer.
- 23. 3. Type www.yahoo.com at the Address Box
- 24. Way of searching Information: Use the Search Box
- 25. Example A student is asked to answer a question: What is the tallest mountain?
- 26. Type What is the tallest mountain? in the Search Box. Then click Search or Press Enter
- 27. There are 1,420,000 + pages containing “What is the tallest mountain”
- 28. TECHNIQUES IN SEARCHING INFORMATION 1. Translation of search request into search terms • Search Request What is the tallest mountain? Search Terms • Tallest mountain
- 29. Type in tallest mountain in the search box
- 30. 2. Combining the search terms A. Phrase Searching - Placing words that go together in “quotes”
- 31. Type “tallest mountain” in the Search Box. Then Click Search or Press Enter.
- 32. There are 300,000+ pages containing “tallest mountain”
- 33. B. Boolean Logic – placing the word AND, OR and NOT to indicate the relationship between the search terms AND – to search page containing both terms. OR – to search page containing either of the terms. NOT – to restrict search on a particular term.
- 34. Example The search request is to search the tallest mountain in Asia. The search terms are as follows: • tallest mountain • Asia
- 35. The use of AND “tallest mountain” AND Asia Hands on The search engine will provide a page containing the TALLEST MOUNTAIN IN ASIA.
- 36. The use of OR tallest OR highest mountain Hands on The search engine will provide a page containing either TALLEST MOUNTAIN or HIGHEST MOUNTAIN to broaden the search.
- 37. The use of NOT “tallest mountain” NOT Asia Hands on The search engine will provide a page containing TALLEST MOUNTAIN not found in Asia.
- 38. C. Pseudo – Boolean Logic involves “+” and “–” signs “+” the engine will search pages containing both terms. “-” the engine will search pages not containing the term.
- 39. The use of + “tallest mountain” + Asia Is the same with “tallest mountain” AND Asia
- 40. The use of - “tallest mountain” - Asia Is the same with “tallest mountain” NOT Asia
- 41. Things to consider in selecting search terms Synonyms – Homonyms – Truncation – The more Avoid terms Adding synonyms that have symbol to for each more than look a the facets, the one multiple better meaning form of a chance the • Ex. CELL word. computer (HUMAN) OR • Ex. CHILD$ will match CELL for your search (PRISON) CHILDREN, request. CHILDLIKE, CHILDHOOD • Ex. HIGHEST … OR TALLEST
- 42. References: Websites: http://lrs.ed.uiuc.edu/Mining/August-September92-TCT.html http://www.4teachers.org/testimony/tinucci/index.shtml http://www.is.tcu.edu/userservices/tcuuser/1196/nltr1196mining.html http://www.techtrain.org/mining/ http://www.cul.co.uk/mining/ http://money.cnn.com/1997/02/12/technology/intv_kurnit/ http://www.slideshare.net/Sammy17/chapter-1-introduction-to-computers-4170691 Literature: Training Manual on Mining the Internet. Sponsored by GEM-USAID and Learn.ph. Track A: ICT Integration Training, Smarts Schools, page 1 – 7 Manual on Basic Computer & Internet Literacy, CLIC Program
- 43. ACTIVITY 1: Task: Search the following facts and Information. Write your answer in the table below. 1. What is the context of “embedded journalist”? When was it first used? Who created the term? 2. __________ is the only pope honored by Turkey a Muslim nation. His statue stands at center of city square of _______________________. 3. Who designed the tallest building in Hong Kong? 4. In September 11, 2001, two commercial airplanes commandeered by terrorist crashed and destroyed the World Trade Center in New York. Is this the first time that an airplane crashed into skyscraper in New York? 5. ___________ is the tallest building in the world. It is located in __________. The construction started in _________ and was finished __________.
- 44. Item Answer URL Search Search Engine Technique 1. 2 3 4 5