1. Introduction IT in Education: Foundation Lee Fong-Lok, fllee@cuhk.edu.hk

2. IT Education in Hong Kong http://www.info.gov.hk/emb/public/it_table.html

3. 2000-01 2002-03 100% 75% 25% 1 至 2 人 100% : 在職教師 : 職前培訓

4. 中 級 程 度 Intermediate Level 在授課和備課時，懂得運用一些資訊科 技工具 ， 應用互聯網及內聯網上的教學資源。 須接受約 30 小時訓練；

5. 中等程度課程 30 小時 Word Processing II Presentation Software II Multimedia Production I Web Page Design I Internet/Intranet Applications Courseware Evaluation Chinese Character Input (Optional) Database I (Optional) Spreadsheet Operation I (Optional) 三選二

6. More Information on IT Competency CUHK http://www.sitc.cuhk.edu.hk/http://www.sitc.cuhk.edu.hk/ Hong Kong http://www.hkedcity.net/resources/ http://www.hkedcity.net/resources/

7. What you are expected Achieved CU IT Competency (~ Basic) Study Level 2 (~ Intermediate) Study Level 3 (~ Upper Intermediate) before graduation

8. Internet/Intranet Applications Internet, Extranet, Intranet and WWW Discussion Group, Newsgroup and ICQ Educational Values of WWW File Transfer Protocol (FTP)

9. WWW and Internet Technology Basic Concepts in Computer Networks Personal Computer (PC)

10. WWW and Internet Technology Basic Concepts in Computer Networks Computer Network A group of two or more computers linked together.

11. WWW and Internet Technology Basic Concepts in Computer Networks Local Area Network (LAN) A computer network where the computers are geographically close together (that is, in the same building).

12. Sharing Files in the LAN Share folders with others Upload to or download from a computer in the same LAN. Shared Drive

13. WWW and Internet Technology Basic Concepts in Computer Networks Sino Building 614M1, Ho Tim Building Wide Area Network (WAN) A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more LAN. Web Server mailservftp server

14. WWW and Internet Technology Basic Concepts in Computer Networks Internet A global network connecting millions of computers. INTERnational NETwork CUHK Internet

15. World Wide Web WWW or the Web. It consists of a network of computers which provide Web pages to Internet users. Web pages consist of hypertext which includes text (and pictures) to provide information along with links to other Web pages. Users access these pages using a browser which uses the addresses of the links to connect to and download the pages.

16. Examples of Browsers Internet Explorer http://support.microsoft.com/ph/2073 http://support.microsoft.com/ph/2073 Netscape http://home.netscape.com/http://home.netscape.com/ Avant Brower http://www.avantbrowser.com/ http://www.avantbrowser.com/ Opera http://www.opera.com/http://www.opera.com/ Firefox http://moztw.org/firefox/http://moztw.org/firefox/

17. WWW and Internet Technology Internet Access Access from a LAN You can access the Internet if you are connected to a LAN, which is connected to the Internet. Internet You www.yahoo.com

18. WWW and Internet Technology Internet Services - Web A Web page may contain text, images (.gif,.jpg format), audio, video objects as well as hyperlinks A hyperlink links to another Internet object, which is specified by a URL (Unique Resource Locator) There are two types of hyperlink: Text based hyperlink Image based hyperlink A URL is the address of a particular Internet object http://www.cuhk.edu.hk/fed/tutorial.html ProtocolServer name Directory name File name

19. The HTTP Protocols The Hypertext Transfer Protocol (HTTP) is the set of rules for exchanging files (text, graphic images, sound, video, and other multimedia files) on the World Wide Web It is the default protocol used in the web browsers

20. WWW and Internet Technology Internet Services – Web publishing Use HTTP (HyperText Transfer Protocol) Supported by the Web Server Client needs a Web-browser to access the web pages Web Server Web Client (via browser) Web page

21. Internet/Intranet Applications FTP (File Transfer Protocol) FTP (File Transfer Protocol) – an Internet Protocol used to exchange files between computers in the Internet You can use FTP with a simple command line interface, a browser or FTP tools such as WS_FTP  E.g. try accessing ftp://ftp.cuhk.edu.hk using a browserftp://ftp.cuhk.edu.hk Using FTP, you can update (delete, rename, move and copy) files which are at the server side Nowadays, the word FTP is often abused. Many of the so- called “FTP sites” uses HTTP to transfer files –HTTP – mainly for displaying web pages –FTP – for file transfer and file operations

22. Using FTP to upload Web Server Your PC Other users To publish a webpage, you need to upload the corresponding files to the web server. Web page upload download

23. Upload the web pages using WS_FTP (an FTP software) Start WS_FTP  Click on the WSFTP logo  Or 開始 -> 程式集 -> Internet Tools -> WS_FTP Create a new FTP profile: Click to create a new profile The name of the server Your account ID Your password

24. Using FTP iHome: ftp://iHome.cuhk.edu. hk Login: sxxxxxx Password: xxxxxx Learning Community: ftp:/course.fed.cuhk.e du.hk Login and Password: to be assigned by the system.

25. Upload the web pages using WS_FTP (an FTP software) Transfer your local files to the server: The files are uploaded to the server using the File Transfer Protocol (FTP) Files in your local hard disk Click on the arrow to upload the files Files on the server under your own directory

26. Internet/Intranet Applications Intranet An internal parts of a company’s web pages Private, can only access within the organization Contains information and services which can only access by the staff and employees/students within an organization Security is important –Use firewalls to restrict access from outside network –Sometimes need login

27. Internet/Intranet Applications Intranet Example: –http://www.lib.cuhk.edu.hk/electronic/jol.htmhttp://www.lib.cuhk.edu.hk/electronic/jol.htm –Only students/staffs from CUHK can access to the above link (CU intranet) –Only computers that are directly connected to the CU network can access to the server hosting these information information Example: –https://extranet.hku.hk/apptunit/https://extranet.hku.hk/apptunit/ –You cannot access the “For HKU Staff Only” session

28. Internet/Intranet Applications Intranet Internet Intranet Web Server Internet Web Server Firewall (block external traffic) Only computers which are “behind” the firewall can access to the Intranet Web Server Organization LAN/WAN

29. Extranet An extension of a company's Intranet out onto the Internet. Allows the sharing of a company's data and/or operations with partners, customers, suppliers, and vendors.

30. Internet/Intranet Applications Newsgroups and Discussion Forums Purpose: a place for exchanging information within a group of people Web based vs. non-web based –Discussion groups: Web based http://www2.fed.cuhk.edu.hk/ited/AppOfComp/Forum.h tm http://www2.fed.cuhk.edu.hk/ited/AppOfComp/Forum.h tm –Newsgroups: Non-web based news://news.cuhk.edu.hk/cuhk.forum news://news.cuhk.edu.hk/cuhk.forum –For newsgroups (non-web based), newsgroup client software is needed. You also need to subscribe to the newsgroup first (compare with hotmail and mailserv)

31. ICQ (I seek you) –ICQ ("I seek you"), –the popular instant-messaging program that lets you communicate with friends and colleagues in real time. –To seek out a friend on the ICQ network, simply enter his or her ICQ number, name, nickname, or email address. –Once your contact list is set up, you'll be notified when your friends are online so that you can chat; send instant messages, files, and URLs; play games; or just hang out. Download the system at http://www.icq.com/download/ and follow the instructions to install and register. See if you can find my ICQ number and ICQ me.

32. MSN Messenger http://messenger.msn.com/xp/downloadDef ault.aspxhttp://messenger.msn.com/xp/downloadDef ault.aspx

33. Education Values of WWW Teaching and Learning Resources in WWW Useful Links –http://www.fed.cuhk.edu.hk/fllee/CommonUse/ Links.htmhttp://www.fed.cuhk.edu.hk/fllee/CommonUse/ Links.htm 香港資訊校園 –http://www.hkcampus.net/main.phtmlhttp://www.hkcampus.net/main.phtml 香港資訊教育城 –http://www.hkedcity.nethttp://www.hkedcity.net

34. Internet Filtering There are very little control (or no control at all) over the contents that post in the Internet Not all are suitable for students/children Requires Internet filtering software to block unwanted sites http://www.we-blocker.com/ http://www.surfcontrol.com

35. Education Values of WWW Web-based Learning & Virtual Classrooms Some examples: –https://www.sitc.cuhk.edu.hk/itcourseware2/index.jsp (need login)https://www.sitc.cuhk.edu.hk/itcourseware2/index.jsp –WebCT A complete Web-based learning environment shall include the following elements / functionalities: –Course materials –Assignment submission –Evaluation and assessment –Teacher-student communication –Etc etc… Not only course materials!!

36. References http://www.edrenplanners.com/present/intranet/intra_def.shtml http://www2.vip.net/~seniors/definit.htm http://www.info.gov.hk/emb/public/it_table.html CUHK http://www.sitc.cuhk.edu.hk/http://www.sitc.cuhk.edu.hk/ http://courseweb.bus.lsu.edu/summer98/marketing/4 414-1/group4/project1/def.htmhttp://courseweb.bus.lsu.edu/summer98/marketing/4 414-1/group4/project1/def.htm http://www.arsh.com/art-glass/discuss.htm http://coverage.cnet.com/Content/Features/Howto/Be yond/ss02.htmlhttp://coverage.cnet.com/Content/Features/Howto/Be yond/ss02.html http://www.icq.com/