江苏省南京市东山外国语学校高中英语 U3 教案 选修7

Unit 3 The world onlineAims and requirements Read two debates and an information sheet Listen to speeches about how people watch and listen to the news Talk about the Internet and ask questions about facts and figures Write an e-mail reporting facts and figures Do research on the Internet and design a posterProcedures Welcome to the unitWith the rapid development of Internet, it has been influencing our daily life tremendously. Internet has transformed our lives and the way we communicate, we learn, we work and spend our free time. In fact, it has more or less changed every aspect of human society.Boys and girls，please read the instructions and focus on the four pictures. Then try your best to think of information you know about each picture. Anyway, Ill give you a brief introduction first. (For example, “We are going to talk about how we use the Internet. Try to find how we can use the Internet and how the Internet can affect our lives.”)Picture 1What can people do on this website?What do we call this kind of website that provides searching services? (We call it search engine.)Do you know how to find information on the internet using a search engine?What search engines do you know or often use? Which is your favorite search engine?Picture 2Have you ever heard of shopping online or bought anything online? What is shopping online like?What do you think would be the advantages of buying things online? (As online shopkeepers do not have to pay for the rental of a real shop, the products sold on line are usually cheaper than those in real shops. It is easy and convenient to compare a product in several online shops. Paying for things is simple as you just key in the credit card number and confirm the payment online. The delivery is usually quick and the online shops provide delivery to your home. The most important thing is that shopping online saves a lot of time. )What do you think would be the disadvantages of online shopping? (Because people can only see pictures of the products online, sometimes you could receive something that was not what you really wanted. The safety of the payment is not one hundred percent guaranteed as someone may steal the account numbers or pin numbers of your credit cards registered online. Also, some people falsely advertise products and then steal customers money. )Picture 3Have you ever tried talking with your parents or friends online? What was it like?What devices do you need if you want to talk with people online? (A computer connected to the Internet, a web-camera, a web-microphone and web-talking software.)What are the good points and bad points of online talking? (There are many good things about online talking. People can save a lot of money instead of paying for long-distance calls. People can keep in touch with family members or friends wherever they are in the world. There are negative things too. The quality of the pictures or voice depends on the speed of the network transfer. Many people talk with online friends without realizing that their pictures could be used by others in illegal ways. )Which way of communication do you prefer, talking face to face, talking over the telephone, talking online or talking online with a web-camera? Why?Picture 4Have you tried other online services that are not mentioned here? Which ones?What other online services do you think we will need or have in the future?What role do you think the Internet will play in the future?Do you think it is a good idea to “live” on the Internet completely?Step 2: Sharing information1. To work in groups of four or to form your own groups. Lets read the three questions under the pictures.2. Exchange your opinions and discuss the three questions among your group members. I want all of you to fully participate in the discussion and express your opinions freely. Then some of you are required to report your answers to the class. Remember it may be more interesting for groups to exchange and compare your answers.Sample answers1. Yes, I like it very much. Normally I use it for checking e-mails, reading the most up-to-date news or talking with my friends. Recently, I registered in an online music course, which allows me to study music and listen to music online for free. I bought things online once or twice, but I rarely do it now because I am very concerned about my privacy and the safety of the activities.2. Fast speed and easy access are the most important aspects of the Internet. Compared to the postal system, e-mail is very fast because people can receive an e-mail instantly after it is sent instead of waiting several days for a letter. Also, with a wire that connects the computer with the Internet, people no longer need to queue to pay for things, to book tickets or to register for something. They only need to sit in front of the computer and key in their information. The Internet has made modern life very convenient. The Internet also has its negative aspects. As the Internet allows free flow of information, people sometimes find that there is too much information online that has not been proven to be true. To some extent, the Internet is becoming a place to spread rumors. In addition, the Internet helps the free spread and downloading of pictures, literature, music or films without acquiring the permission from the copyright holders, which is illegal.3. The Internet will free people from the offices every day. They can do their business online, including reading documents and have meetings. At that time, people will have more spare time and arrange their personal lives freely. Besides, every part of a home can be connected to the Internet, e.g., the fridge, the microwave oven or the bath, so that you can use the computer to pop online and control the electric devices at home when you are away. At that time, you can get home with food ready in the microwave and hot water ready in the bathroom. What used to be a great nuisance in the daily life will be just simply at one click of the mouse. Finally, the Internet will shorten the distance between people in different parts of the world. Free access to information will enable people to better understand the world they are living in. This will better protect the minority cultures and help people avoid culture shock. Step 3: Discussion:What are the advantages and disadvantages of the Internet?Sample answersWith the rapid development of Internet, it has been influencing our daily life tremendously. Internet has transformed our lives and the way we communicate, how we learn, how we work and spend free time. In fact, it has more or less changed every aspect of human society.We can benefit a lot from Internet. Firstly, it is more convenient than ever before. Internet has greatly shortened the distance among human beings. E-mail is much more efficient. To do some research work, we can search for relevant information on Internet without leaving our home. Secondly, we can reduce our cost greatly. We neednt spend lots of time and money in printing and posting. What we have to do now is just to send documents through Internet and it almost costs nothing.Although Internet has brought us many benefits, there can be no denying that it has brought us many inconveniences, even harms as well. First of all, it is not safe on Internet. Maybe thousands of people are staring at you when you log onto Internet. Your private information, such as your account and password, is easy to be let out. On the other hand, with the sharply increasing amount of time spent on Internet, we are starting to lose ourselves, especially for those youngsters. We are getting more and more indifferent to people around us. The more we communicate, the lonelier we feel.However, Internet itself is neither right nor wrong. We can benefit from it and may also suffer from it. Nobody can hold back the step forward of Internet. If we resisted it, we would certainly lag behind other nations. What we should do is to take full use of its advantages and try to avoid the harms it may bring as well.Step 4: Homework:1. Collect more information about the development of the Internet.2. Prepare the Reading part.Reading The effects of the Internet on our livesStep1: Lead-inNowadays, internet is playing an increasingly significant role in our society. Since its appearance, it has brought enormous changes to our lives. It seems that no one can escape from the influence of it. As to whether it is a blessing or a curse, there is a long-running controversial debate. Some people think that increased use of the Internet leads to social isolation and depression. People who spend more time on the Internet spend less time socializing with peers, communicate less within the family and feel more lonely and depressed.Have a discussion about the good and bad effects of the Internet in group. Try to fill in the table below: The effects of the Internet Advantages1. _2. _3. _4. _ Disadvantages1. _2. _3. _4. _Step 2: Fast reading for general ideasGo through the passage as quickly as possible and try to find answers to the three questions in part A. Just focus on and identify the information needed to answer these questions.AnswersA 1 They are about different effects of the Internet on our lives.2 Two.3 Uncontrolled information and the change in the way people spend their time.Step 3: Detailed reading for important information1. Lets read the passage a second time and complete Parts C1 and C2. AnswersC1 1 against 2 for 3 against 4 for 5 for 6 againstC2 Arguments The Internet is a great help to people who are in need of various information. People use the Internet to build social ties. The amount of false information on the Internet becomes more of a problem every day. Spending too much time building relationships on the Internet can damage peoples abilities to live normal lives. 2. Read the text again and choose the best answers according to the text: According to the survey, children use the Internet mostly to _.A. chat B. play gamesC. help with their studies D. advance knowledge about hobbies What is the most important thing in building a friendship?A. common interests B. appearanceC. age D. popularity What is the worst problem of eBay?A. false informationB. people dont know how to use a computerC. things selling on the Internet dont existD. people are used to the traditional ways of buying The clinic was opened to_.A. help people surf the InternetB. be an Internet cafC. make people spend their time with their familyD. help people who are addicted to computer gamesKeys:(1)-(4) CAADNow, read the Reading strategy on page 35. Pay attention to how to read an argument, especially, how to find each sides view, how to find a list of points, and what each side believes. Read the passage again and try to fill in the table below.Debaters Main points Supporting facts Conclusions ZhuZhenfei the Internets value for people who are looking for information A recent survey done in the USA showed that 80 percent of frequent users use it mainly to search for answers to questions, and that 79 percent said their second most common use of the Internet is to advance their knowledge about hobbies;The Internet remains a positive tool that helps make our lives better. the Internets ability to build online groups and form friendships which the Internet gives us 1.Internet friendships are based on common interests, rather than appearance, age or popularity;2. People who are disabled and must stay in their homes can communicate with the outside world and meet others with similar interests; Lin Lei uncontrolled information 1. In 2020, eBay said that 70 percent of their problems were with people who sold things that did not exist, or who lied about the products they were selling;2. University professors around the world complain that students are handing in papers using false information they found on the Internet;It remains important for us either to limit our use of the Internet, or to learn how to handle the problems it has caused. the change in the way people spend their time 1. Some families spend their time apart, because one or more members are using the computer, or are at an Internet caf;2. One university did a study about the students who had stopped their studies before completing a diploma course, and found that 43 percent of them were heavy computer users; Step 4: Practice:1. Now lets complete Part D on page 36.AnswersD 1 f 2 b 3 a 4 g 5 c 6 d 7 h 8 e2. A university student sent an e-mail to his mother. Read it in Part E and fill in the blanks with words given in the box.AnswersE (1) Internet (2) debate (3) speakers (4) experts(5) social ties (6) heavy (7) aspect (8) up-to-date(9) disabled (10) statistics Step 5: Post-reading activities1. Pair work:What do you know about the Internet? Try to find as much information as you can, and report your information to your partner.For referenceThe Internet is a giant network of computers located all over the world that communicate with each other.The Internet is an international collection of computer networks that all understand a standard system of addresses and commands, connected together through backbone systems. It was started in 1969, when the U.S. Department of Defence established a nationwide network to connect a handful of universities and contractors. The original idea was to increase computing capacity that could be shared by users in many locations and to find out what it would take for computer networks to survive a nuclear war or other disaster by providing multiple paths between users. People on the ARPNET (as this nationwide network was originally called) quickly discovered that they could exchange messages and conduct electronic “conferences” with distant colleagues for purposes that had nothing to do with the military industrial complex. If somebody else had something interesting stored on their computer, it was a simple matter to obtain a copy (assuming the owner did not protect it).Over the years, additional networks joined which added access to more and more computers. The first international connections, to Norway and England, were added in 1973. Today thousands of networks and millions of computers are connected to the Internet. It is growing so quickly that nobody can say exactly how many users “On the Net”.The Internet is the largest repository of information which can provide very large network resources. The network resources can be divided into network facilities resources and network information resources. The network facilities resources provide us the ability of remote computation and communication. The network information resources provide us all kinds of information services, such as science, education, business, history, law, art, and entertainment, etc.The goal of your use of the Internet is exchanging messages or obtaining information. What you need to know is that you can exchange message with other computers on the Internet and use your computer as a remote terminal on distant computers. But the internal details of the link are less important, as long as it works. If you connect computers together on a network, each computer must have a unique address, which could be either a word or a number. For example, the address of Sams computer could be Sam, or a number.The Internet is a huge interconnected system, but it uses just a handful of method to move data around. Until the recent explosion of public interest in the Internet, the vast majority of the computers on the Net use the Unix operating system. As a result, the standard Unix commands for certain Internet services have entered the online communitys languages as both nouns and verbs to describe the services themselves. Some of the services that the Internet can provide are: Mail, Remote use of another computer (Telnet), File Transfer (FTP), News, and Live conversation.The most commonly used network service is electronic mail (E-mail), or simply as mail. Mail permits network users to send textual messages to each other. Computers and networks handle delivering the mail, so that communicating mail users do not have to handle details of delivery, and do not have to be present at the same time or place.The simplest way to access a file on another host is to copy it across the network to your local host. FTP can do this.Presently, a user with an account on any Internet machine can establish a live connection to any other machine on the Net from the terminal in his own office or laboratory. It is only necessary to use the Unix command that sets up a remote terminal connection (Telnet), followed by the address of the distant machine.Before you can use the Internet, you must choose a way to move data between the Internet and your PC. This link may be a high-speed data communication circuit, a local area network (LAN), a telephone live or a radio channel. Most likely, you will use a Modem attached to your telephone line to talk to the Internet. Naturally, the quality of your Internet connection and service, like many other things in life, is dictated by the amount of money that you are willing to spend.