1. Lesson 1 What Is the World Wide Web?

2. Objectives Upon completion of this lesson, you should be able to: Explain what the World Wide Web is and how it works. Identify the elements of a Web browser and explain how the browser works. Tell what determines how fast a Web page loads. Create a simple Web document.

3. How Does the Web Work? The Web is a new form of mass communication: – Made up of collections of Web pages called Web sites. – Web pages are easy to create and are accessible to everyone. – The Web is part of the Internet: A Global Communications Network. Step-by-Steps 1.1 & 1.2

4. How Does the Web Work? Computers request information from servers: – Browsers on computers use URLs (www.disney.com) to locate Web pages on Servers.www.disney.com – Routers locate the requesting computers and Web servers. Step-by-Steps 1.1 & 1.2

5. How Does the Web Work? Packets: – Servers break information into little bundles called packets. – Routers send packets to their destination. – If packets get lost, they are requested and sent again. Step-by-Steps 1.1 & 1.2

6. Your Connection to the Web Web browser: – Puts packets back together. – Interprets HTML tags on Web pages and displays Web content. Step-by-Steps 1.3, 1.4, & 1.5

7. Your Connection to the Web Web browser displays: – Search tools. – Hyperlinks to proceed to pages. – Back button to return from pages. Step-by-Steps 1.3, 1.4, & 1.5

8. Your Connection to the Web Web browser’s parts: – Navigation buttons – Address box – Status icon – Content area – Status bar Enter URLs: – www.course.com www.course.com – www.geocities.com www.geocities.com – www.altavista.com www.altavista.com Step-by-Steps 1.3, 1.4, & 1.5

9. Your Connection to the Web Web indexes and search tools: – Yahoo! – AltaVista – Google Enter URLs: – www.yahoo.com www.yahoo.com – www.altavista.com www.altavista.com – www.google.com www.google.com Step-by-Steps 1.3, 1.4, & 1.5 An index organizes pages by topics. Search tools search by keywords.

10. How Fast Is the Web? Step-by-Step 1.6 Text browsers don’t. GUI browsers show pictures.

11. How Fast Is the Web? Web speed is determined by: – Size of Web page. – User’s connection speed. – Internet Traffic. – Server’s connection speed. – Web server speed. Step-by-Step 1.6

12. How Fast Is the Web? Graphics take longer to load. Text pages load faster. Step-by-Step 1.6

13. Making a Simple Web Page Web pages are made up of tags: – Opening or starting tags – Angle brackets – Information to be displayed in content area – Closing tags Hello, my name is ____. Step-by-Step 1.7

14. Making a Simple Web Page Hello, my name is ____. Step-by-Step 1.7 These tags will create this Web page.

15. Summary In this lesson, you learned: What the World Wide Web is and how it works. To identify the elements of a Web browser and explain how the browser works. To determine how fast a Web page loads. To create a simple Web document.