1. The Internet and the World Wide Web Chapter Seven Teaching and Learning With Technology 3e

2. The Internet  International network of networks  Common protocol (TCP/IP) used  Transmission control protocol/Internet protocol  Began with select military and university networks connected  Over 450 million host computers  Over one billion Internet users

3. Connecting to the Internet Telecommunication Electronic communication between computers via telephone lines

4. Telecommunication Technologies  Computers are digital  Telephone lines are analog  Modem (Hardware)  MOdulate computer signal for phone line  DEModulate from phone line to computer  Software  Packaged with modem or  Provided by subscription service

5. Home-to-Network  Land line  Home computer calls network modem’s phone number  Link established  Login and password  May be slow due to limited bandwidth on phone line  Digital Subscriber Line (DSL) 30X faster  Cable modem uses cable TV lines (even faster)  Wireless satellite access (Direct TV)

6. Internet Service Providers  ISPs  Provide home users access to Internet  Phone numbers for computer to dial  May provide  Email  Phone support  Browser  Personal web space

7. Communicating via Email  Electronic mail  Key features  Address book  To, Cc, Bcc options  Subject line  Reply to sender(s)  Forward  Attach file  Save Email  Print Email

8. Email and Teaching & Learning  Assignment transmission  Class discussions  Electronic keypals  Communication  Student-Student  Student-Teacher  Teacher-Parent

9. Internet-Based Communication  Asynchronous (time-shifted)  Email – pblackwo@crowder.edu pblackwo@crowder.edu  Conference, bulletin board, club, forum  Mailing list (Listserv)  Synchronous (same-time)  Chat  Instant messaging (IM)  Videoconferencing  http://www.globalschoolnet.org/gsh http://www.globalschoolnet.org/gsh

10. Other Internet Services  FTP (File Transfer Protocol)  Used to transfer Internet files  Often compressed files  Freeware and shareware  Newsgroups  World Wide Web  Not synonymous with the Internet

11. The World Wide Web  In 1991, Tim Berners-Lee wrote a program allowing users to move between linked web pages on the Internet.  Clicking on a hyperlink made navigation point and click  Collection of hyperlink documents available on Internet is the WWW

12. Web Sites  Web page  Informational document with hyperlinks to other resources  Web site  Collection of related web pages  Home page  Welcome  Connections to other pages  Navigation buttons  Connections or “hotlinks”

13. Web Browsers  Web pages in HTML  Browser is translation software  Key browser features  Navigation buttons (forward or back)  Stop button  History  Home  Address bar  Favorites  Search

14. Locating Web Pages  URL – uniform resource locator  Include  Name of a type of web server  Specific directory  Specific folder and file name

15. Creating and Evaluating Web Sites  Should be well organized and logical  Easy to navigate  Appropriate authority and expertise  Free of bias  Not selling something  Cite sources

16. Multimedia on the Web  Appeal to variety of learning styles  Authoring programs support multimedia  Time consuming downloads  Browsers may require a plug-in  Include URL for the plug-in

17. Multimedia on the Web  Graphics  GIF – Graphic interchange format  Low resolution  Download fairly quickly  JPEG – Joint Photographic Expert Group  High resolution  Large files  Download requires more time  Copyrighted images cannot be used or reproduced without permission of owners

18. Multimedia on the Web  Audio  WAV and MP3 formats  Require complete download before playing  Long download delays when using these formats  Streaming Audio  Audio sent in continuous flow  Players allow listening as it is received  RealOne Player

19. Multimedia on the Web  Video  Usually brief because of download time  Streaming video  View as downloaded  Bandwidth and speed may cause choppy images  Video technologies in depth in Chapter 9

20. Multimedia on the Web  Virtual Reality (VR)  3-D graphic environment  Web accessible  User interacts with 3-D environment  Low bandwidth can cause environments to move slowly and appear choppy  Virtual field trips to museums, pyramids, etc.

21. Search Engines  Find web sites based on search criteria  Key word  Phrase  Series of words  Matches provided as hyperlinks  Different search engines-different results  Structure requests to narrow # of hits  Boolean search – AND, OR, or NOT

22. Portals  Doorways to Internet and its services  Began as search engines  Offered more and more services  Search engine  Email  E-shopping  Portals include Yahoo!, Lycos, and Excite

23. The Internet and Web in Teaching and Learning Chapter 8 will explore how the World Wide Web can be used in teaching and learning.