The Internet and The Internet and the World Wide the World Wide WebWeb Chapter SevenChapter Seven

Teaching and Learning Teaching and Learning With Technology 3eWith Technology 3e

The InternetThe InternetInternational network of networksInternational network of networksCommon protocol (TCP/IP) usedCommon protocol (TCP/IP) used

Transmission control protocol/Internet protocolTransmission control protocol/Internet protocolBegan with select military and university Began with select military and university

networks connectednetworks connectedOver 450 million host computersOver 450 million host computersOver one billion Internet usersOver one billion Internet users

Connecting to the Connecting to the InternetInternet

TelecommunicationTelecommunication

Electronic communication Electronic communication between computers via between computers via

telephone linestelephone lines

TelecommunicationTelecommunicationTechnologiesTechnologies

Computers are digitalComputers are digitalTelephone lines are analogTelephone lines are analogModem (Hardware)Modem (Hardware)

MOMOdulate computer signal for phone linedulate computer signal for phone lineDEMDEModulate from phone line to computerodulate from phone line to computer

Software Software Packaged with modem orPackaged with modem orProvided by subscription serviceProvided by subscription service

Home-to-NetworkHome-to-NetworkLand lineLand line

Home computer calls network modem’s phone Home computer calls network modem’s phone numbernumber

Link establishedLink established Login and passwordLogin and password May be slow due to limited bandwidth on phone lineMay be slow due to limited bandwidth on phone line

Digital Subscriber Line (DSL) 30X fasterDigital Subscriber Line (DSL) 30X fasterCable modem uses cable TV lines (even faster)Cable modem uses cable TV lines (even faster)Wireless satellite access (Direct TV)Wireless satellite access (Direct TV)

Internet Service Internet Service ProvidersProviders

ISPsISPsProvide home users access to InternetProvide home users access to InternetPhone numbers for computer to dialPhone numbers for computer to dialMay provideMay provide

EmailEmailPhone supportPhone supportBrowserBrowserPersonal web spacePersonal web space

Communicating via EmailCommunicating via EmailElectronic mailElectronic mailKey featuresKey features

Address bookAddress book To, Cc, Bcc optionsTo, Cc, Bcc options Subject lineSubject line Reply to sender(s)Reply to sender(s) ForwardForward Attach fileAttach file Save EmailSave Email Print EmailPrint Email

Email and Email and Teaching & LearningTeaching & Learning

Assignment transmissionAssignment transmissionClass discussionsClass discussionsElectronic keypalsElectronic keypalsCommunicationCommunication

Student-StudentStudent-StudentStudent-TeacherStudent-TeacherTeacher-ParentTeacher-Parent

Internet-Based Internet-Based CommunicationCommunication

Asynchronous (time-shifted)Asynchronous (time-shifted)Email – Email – pblackwo@crowder.eduConference, bulletin board, club, forumConference, bulletin board, club, forumMailing list (Listserv)Mailing list (Listserv)

Synchronous (same-time)Synchronous (same-time)ChatChat

Instant messaging (IM)Instant messaging (IM)VideoconferencingVideoconferencing

http://www.globalschoolnet.org/gsh

Other Internet ServicesOther Internet ServicesFTP (File Transfer Protocol)FTP (File Transfer Protocol)

Used to transfer Internet filesUsed to transfer Internet filesOften compressed filesOften compressed filesFreeware and sharewareFreeware and shareware

NewsgroupsNewsgroupsWorld Wide WebWorld Wide Web

Not synonymous with the InternetNot synonymous with the Internet

The World Wide WebThe World Wide WebIn 1991, Tim Berners-Lee wrote a In 1991, Tim Berners-Lee wrote a

program allowing users to move between program allowing users to move between linked web pages on the Internet.linked web pages on the Internet.

Clicking on a hyperlink made navigation Clicking on a hyperlink made navigation point and clickpoint and click

Collection of hyperlink documents Collection of hyperlink documents available on Internet is the WWWavailable on Internet is the WWW

Web SitesWeb SitesWeb pageWeb page

Informational document with hyperlinks to other Informational document with hyperlinks to other resourcesresources

Web siteWeb site Collection of related web pagesCollection of related web pages

Home pageHome page WelcomeWelcome Connections to other pagesConnections to other pages

Navigation buttonsNavigation buttons Connections or “hotlinks”Connections or “hotlinks”

Web BrowsersWeb BrowsersWeb pages in HTMLWeb pages in HTMLBrowser is translation softwareBrowser is translation softwareKey browser featuresKey browser features

Navigation buttons (forward or back)Navigation buttons (forward or back) Stop buttonStop button HistoryHistory HomeHome Address barAddress bar FavoritesFavorites SearchSearch

Locating Web PagesLocating Web PagesURL – uniform resource locatorURL – uniform resource locator IncludeInclude

Name of a type of web serverName of a type of web server Specific directorySpecific directory Specific folder and file nameSpecific folder and file name

Creating and EvaluatingCreating and EvaluatingWeb SitesWeb Sites

Should be well organized and Should be well organized and logicallogical

Easy to navigateEasy to navigateAppropriate authority and expertiseAppropriate authority and expertiseFree of biasFree of biasNot selling somethingNot selling somethingCite sourcesCite sources

Multimedia on the WebMultimedia on the WebAppeal to variety of learning stylesAppeal to variety of learning stylesAuthoring programs support multimediaAuthoring programs support multimediaTime consuming downloadsTime consuming downloadsBrowsers may require a plug-in Browsers may require a plug-in Include URL for the plug-inInclude URL for the plug-in

Multimedia on the WebMultimedia on the WebGraphicsGraphics

GIF – Graphic interchange formatGIF – Graphic interchange format Low resolutionLow resolution Download fairly quicklyDownload fairly quickly

JPEG – Joint Photographic Expert GroupJPEG – Joint Photographic Expert Group High resolutionHigh resolution Large filesLarge files Download requires more timeDownload requires more time

Copyrighted images cannot be used or Copyrighted images cannot be used or reproduced without permission of ownersreproduced without permission of owners

Multimedia on the WebMultimedia on the WebAudioAudio

WAV and MP3 formatsWAV and MP3 formats Require complete download before playingRequire complete download before playing Long download delays when using these formatsLong download delays when using these formats

Streaming AudioStreaming Audio Audio sent in continuous flowAudio sent in continuous flow Players allow listening as it is receivedPlayers allow listening as it is received RealOne PlayerRealOne Player

Multimedia on the WebMultimedia on the WebVideoVideo

Usually brief because of download timeUsually brief because of download timeStreaming video Streaming video

View as downloadedView as downloaded Bandwidth and speed may cause choppy imagesBandwidth and speed may cause choppy images

Video technologies in depth in Chapter 9Video technologies in depth in Chapter 9

Multimedia on the WebMultimedia on the WebVirtual Reality (VR)Virtual Reality (VR)

3-D graphic environment3-D graphic environmentWeb accessibleWeb accessibleUser interacts with 3-D environmentUser interacts with 3-D environmentLow bandwidth can cause environments to Low bandwidth can cause environments to

move slowly and appear choppy move slowly and appear choppy Virtual field trips to museums, pyramids, etc.Virtual field trips to museums, pyramids, etc.

Search EnginesSearch EnginesFind web sites based on search criteriaFind web sites based on search criteria

Key wordKey wordPhrasePhraseSeries of wordsSeries of words

Matches provided as hyperlinksMatches provided as hyperlinksDifferent search engines-different resultsDifferent search engines-different resultsStructure requests to narrow # of hitsStructure requests to narrow # of hitsBoolean search – AND, OR, or NOTBoolean search – AND, OR, or NOT

PortalsPortalsDoorways to Internet and its servicesDoorways to Internet and its servicesBegan as search enginesBegan as search enginesOffered more and more servicesOffered more and more services

Search engineSearch engineEmailEmailE-shoppingE-shopping

Portals include Yahoo!, Lycos, and Portals include Yahoo!, Lycos, and ExciteExcite

The Internet and Web in The Internet and Web in Teaching and LearningTeaching and Learning

Chapter 8 will explore how the World Wide Chapter 8 will explore how the World Wide Web can be used in teaching and Web can be used in teaching and learning.learning.