The Internets History1969 ARPANETDeveloped by the Department of DefenseConnected universities and defense bases1973 ARPANET connects to Europe

ARPANET 1973

The Internets HistoryMid-1980s NSFNetNetwork between supercomputersInternet was the link to ARPANETNo commercial traffic allowed1990sARPANET shut downNSFNet abandonedCommercial networks take over

Discussion pointHave students discuss the pros and cons of no central control for the Internet. Some discussion points can include copyright issues, free speech, advertisements and information access to all.

Today and the Future100,000 new web sites per monthMore than 50% of U.S. households onlineAccess is available throughout the U.S.Eventually access will be global

U.S. Internet Growth

The Internets Major ServicesThe World Wide Web (WWW)Developed in 1993 by Tim-Berners LeeAllowed connection of documentsRequired a browser to read documentsElectronic mail (e-mail)Instantaneous transmission of documents

The Internets Major ServicesNewsOften called newsgroupsElectronic discussions on several topicsFile Transfer Protocol (FTP)Sends and receives files

Teaching tipShow a typical news group to the students in class. Be sure that you have connected and downloaded all posts before trying the demonstration.

Demonstrate the use of ftp to change a web site.

The Internets Major ServicesChatPublic real time conversationInstant messagingPrivate real time conversation Peer-to-peer servicesAllows sharing of files among usersNapster and Kazaa are examplesIllegal to share copyrighted material

Discussion pointRecently the pop artist Madonna posted several copies of her songs on Kazaa and other file sharing services. Instead of music, she talked at length about copyright infringement through music sharing. In retaliation, hackers hit her website and temporarily made her songs free to purchase. Who is right?

Accessing The InternetInternet Service Provider (ISP)Company that provides Internet accessDialupConnects to Internet through phone lineModem connects to the phone lineSlow connection

Accessing The InternetHigh-speed accessConnect through a special line2 25 times faster than dialupDSL, Cable, T1 are common

Understanding the InternetThe Internet allows accessing resourcesThe Web simplifies the InternetThe Web connects documentsHypertext creates links between documentsDocuments are stored on a web serverHTTP delivers documents

Teaching tipFind out who has a web presence. If the site is appropriate, display it in class. Have the student discuss what is needed to establish and maintain a web presence.

Understanding the InternetWeb site is a collection of documentsDocument is a web pagePages are published to the webHypertext Markup LanguageCreates web pagesDescribes how pages should lookContent enclosed in tagscontent

Teaching tipShow your students how to access the HTML of an appropriate web site.

Understanding The InternetBrowsersRead and translate the HTMLDisplay web contentUniform Resource Locator (URL)Address of a web page

Teaching TipDissect the URL provided.

Understanding The InternetHelper applicationsPlug-insEnhance a browsers functionalityStreaming audio and videoSends the file in small chunksChunks downloaded while others play

Teaching pointDirect the students to several different streaming video sites. Www.launch.com and www.apple.com/QuickTime are two excellent examples. Be sure your classroom browsers have the appropriate plug-ins.

Streaming Audio

Using a Browser And The WWWBrowser starts on the home pageNavigating the webEnter a URL in the browserClick a linkLinks are typically blue underlined wordsImage maps are picture linksWhen finished, close the browser

Searching the WebThe Web is unorganizedDirectoriesCategorize the InternetSearch enginesFind sites by keyword

Insider informationThe search engine www.google.com has become one of the hottest search engines on the planet. It is so popular, its name has become a verb. For example, I googled the answer last night is a phrase uttered on college campuses the world over.

Searching the WebSite searchesLarge sites have an internal searchMetasearch sitesSearch several web sites at onceSponsored linksSites pay for better search results

Search TechniquesQuote the exact phraseUse the keyword ANDUse the keyword NEARAvoid common wordsUse the sites advanced tools

Copyright 2006 by The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Technology Education

Chapter 2AEnd of Chapter

Discussion pointHave students discuss the pros and cons of no central control for the Internet. Some discussion points can include copyright issues, free speech, advertisements and information access to all. Teaching tipShow a typical news group to the students in class. Be sure that you have connected and downloaded all posts before trying the demonstration.

Demonstrate the use of ftp to change a web site. Discussion pointRecently the pop artist Madonna posted several copies of her songs on Kazaa and other file sharing services. Instead of music, she talked at length about copyright infringement through music sharing. In retaliation, hackers hit her website and temporarily made her songs free to purchase. Who is right? Teaching tipFind out who has a web presence. If the site is appropriate, display it in class. Have the student discuss what is needed to establish and maintain a web presence. Teaching tipShow your students how to access the HTML of an appropriate web site.Teaching TipDissect the URL provided.Teaching pointDirect the students to several different streaming video sites. Www.launch.com and www.apple.com/QuickTime are two excellent examples. Be sure your classroom browsers have the appropriate plug-ins.Insider informationThe search engine www.google.com has become one of the hottest search engines on the planet. It is so popular, its name has become a verb. For example, I googled the answer last night is a phrase uttered on college campuses the world over.