必修2-Unit3-Computers全单元教案.doc
Unit 3 ComputersPeriod 1: Listening & SpeakingGOALS:1. To practise listening comprehension.2.To practise making decisions and reasoningTEACHING PROCEDURES:Step1. revision1. check the homework exercises.1). It has been reported that children will be offered free educationIt has been reported that free education will be offered to children2). It has been said that we will be offered the latest computer science course bookIt has been planned that the latest computer science course book will be offered to us3). I have been told by Peter that I will be lent his notebook computer for a weekI have been told by Peter that his notebook computer will be lent to me for a week2. Question: What can computers be used as?Step2. Lead-inAs we know, science and technology is developing very fast and computers have become smaller and smaller. They have been used in many fields. So, the 21st century is the century of information technology What does it mean? Does information technology/ IT only mean things like computers? Of cause not. Actually, it means more than computers. Computers are just one kind of IT. What else do you know is part of IT?(TV, radio, CD-ROM, DVD, books)Step3. Listening (SB)1. Pre-listening: What are the changes brought by different forms of IT ?What are the advantages and disadvantages of them ?2. While-listening:Go through the chart and make sure the students look at the chart before they listen to the tape. (This is to sharpen their attention and listen for the answers. This will also help them get the gist of the text.) Then Listen to the tape and finish filling in the chart. (If necessary, play the tape for several times.)Say: After listening to their talk, we know all kinds of IT have both disadvantages and advantagesLets check the answers together.Type of ITAdvantagesDisadvantagesTVYou can both listen and watchYou cannot write to friendsWebYou can find informationIt is very expensiveRadioYou can listen to EnglishYou cannot watch a filmBookYou can get informationSometimes it is out of date3. Post-listening:1) (pair work): decide which type of IT is best for you to use right now. Make your choice and give your reasons by using the following expression_r_rs. I think that. In my opinion, . I believe that. I agree because. I disagree because. Ive decided that.2) (group work): Discussion :Computers are useful and have brought us lots of good things, but they also cause bad effects. What attitude should we have towards the computer? (Make good use of it but never get trapped by it.)Step4. Speaking1. Pre-speakingSay: From what we have learn, we should admit that computers and the web have a great influence on the school education as well as peoples life. It has come into peoples everyday life and many families hold computers in their homes. Now there is a task for you.2. While-speaking1) Situation: You have been asked by your parents to help choose computers for your home. You and your friend have looked at several computers. Talk about the special things each computer can do. Make a decision about which kind of computer to buy and explain why.Information input: Show students some pictures of different computers (desktop computer & laptop computer & )Language input: Useful expression_r_rs (Repeat it to strengthen students ability of use it.)Supporting an opinionChallenging an opinionI think that , because Perhaps, but what if / about ?First, Have you thought about ?One reason is that What makes you think that ?I think it is better becauseI dont like it because.(Pair work )Use the expression_r_rs to support your opinion or challenging others opinions.2) Oral report: (individual work )Do an oral report to your father and start your report like this: I looked at many different computers. The one I have chosen is the PEP personal computer. One of the main reasons is that it is suitable for homes. I found that3. Post-speakingConclusionWhat useful expression_r_r do we use to make a decision and reason?(In this way, they can review and use the words and phrases again.)Step5. HomeworkPage 22. writing: Write a report about your choice and try to use the present perfect passive voice as well as the useful words and expression_r_rs that have been mentioned above. in your report.Period 2: Reading and speaking & WritingGoals:1. Learn a reading passage to learn about a football android called Andy.2. Improve students reading ability.3. Design an android.4. Write a passage about the problems that the android might have while he/she is serving people. Teaching procedures: Step1: Lead-inShow the first picture and tell the students that computers could be put into androids or robots. Present “android”. Tell the students: Androids are always with us! The students may disagree. Show pictures of Atom and Doraemon. Say: they are androids with magical power. Continue to show pictures of nursery maid androids and tell the students androids can be made to look after humans. Then ask: But can you imagine androids can play football? Maybe you are curious about it. I will show you a video that androids play football. Let the students watch the video and tell them: oday I would like to introduce an android family member to you .His name is Andy. Present the reading passages topic: Andy-the Android.Step2: Reading: Let the students read the passage. Carry out the tasks below:Task1: Answer the questions below:1. Who is Andy? What is he good at?(He is an android. And he is good at playing football)2. What helps him to move and think like a human?(His computer helps him to move and think like a human.)3. What does Andy think about the team who beat them last year? Why?(She thinks the team cheated because they had a new kind of programmer, which had just been developed before the competition.)4. What does the programmer do to Andy?(She programs me with all the possible moves she has seen while watching human games.)Task2: Fill in the blanksThe story is about the _ called _, who is good at_. And his_ makes him think and move like a _. However, they _ in the _ hosted in the USA, because the other team had a new kind of_. After that, he will ask his programmer to improve his _ and _ some new moves.Task3: Language points:1. I think we can work together to create even better software.even = much 用于强调比较的程度2. In a way, my programmer is like my coach.in a way 在某种程度上in the way 挡道,造成障碍in this way 用这种方法Fill in the blank：1). _it was one of our biggest mistakes.2). You can finish your work .3). Your bike is .Move it away.3. In this way, I can make up new moves.make up 编写，补上4. After all, with the help of my computer brain which never forgets anything, intelligence is what Im all about.after all 毕竟with the help of sb./sth. 在的帮助之下= with ones/ sths helpStep3 Speaking Tell the students that we already have many different kinds of androids in our daily life. Show some pictures of androids for different purposes-maid, adventure and work. Then say to the students: Lets design an android of our own! The following questions and expression_r_rs can help you:What would you like it to look like?What are some of the things you would like it to do?Do you want it to be like a man or a woman, or neither?How much would it cost?.Get the students to use the following sentences for discussion:I think that Whats your reason?In my opinion I have decided thatSample:A: What would you like your android to look like?B : In my opinion it should look like a bird.A: That sounds interesting. What will it do for you?B: I think it can sing beautiful songs for me day and night.A : Oh, yes! That sounds good. How much is it?B: It doesnt cost much money because I will make it by myself.A: Really?! Do you want it to be a man or woman, or neither?B : I want it to be a beautiful girl named Kelly.A: Please show it to us some day.B: Oh, No money no talk.Step4 Pre-writingSay: Imagine what problems and delights this android might have to deal with while it is serving you. Try yourself in someone elses shoes is an important way of understanding how other people feel.Then discuss: You are an android. You work for a family with one child who is very spoiled. The parents want you to do everything for them. The parents are nice, but they often ask you to watch over their child. How do you feel? What would you do if the child asked you to do his/her homework for him/her? Would you ever tell the child “no”?Step5 WritingSay: Write a passage about the result of your discussion! It should contain: What do you have to do?What is the child like?What is the parents requirement of the child?What do the parents want you to do?What does the child want you to do?Then what will you do? How do you feel?Sample writing:Hello everybody, my name is Liu YanI am a 321 model androidI work for the Li family. Mr and Mrs Li work very hard tooMr Li is an architect and designs great tall apartment blocksMrs Li is a doctor and has to look after many patientsI remember all the plans for Mr Li's projects and can tell Mrs Li which drugs are the best to give any particular patient. And I also look after their library. I store all the books that they borrow from their school or friends in my brainOf course my brain is as large as a mountain, so work like that is no trouble to meI really eat books just like people eat foodThe Lis have a child who is very spoiled. He needs me to remember all his school textbooks so that I can do his homework for himHe just gives me the information on the subject, what has to be done and the page numbers and I get on with it while he enjoys himself with his friendsSometimes I don't think it is right to do his homework for him it's somewhat cheating. However, his parents are very concerned at the pressure of work in school these daysThe child has too much homework to do. They like him to go to the key school but they also want him to be able to have hobbies, learn to swim and keep fit! Poor child! So they consider me the most important person in the family after themselvesI am always introduced to their friends and play with visiting childrenI am the perfect family academic aid and, although I was not cheap to buy, Mr Li says I was worth every yuan!Step6 AssessmentGet the students to assess their writing ability according to the following the questions:1. Is your composition well developed?2. Are your ideas well organized to the point?3. Do you have a good choice of words and idioms in your writing?4. Do you get a good mastery of complex structures of language?5. What kind of mistakes have you made in your writing?Step5: HomeworkWrite about your discussion. You may begin like this:Hello, everyone. My name is _. Im 321 model android. I work for the Li family.Period 3: learning about Language-the Present Perfect Passive VoiceGoals: 1. Learn the Present Perfect Passive Voice.2. Help the students master the way of using the correct voice, telling the differences between the active voice and the passive voice. Teaching Procedures:Step 1: Revision and lead-in1. Check the homework firstEx1:1 totally 2 revolution 3 artificial intelligence 4 birth 5 simple-minded 6 go by 7 deal with 8 network 9 truly 10 anywayEx2:revolution; network; went by; totally; truly; simple-minded; Anyway; deal withEx3:1 totally 2 amazed 3 exciting 4 excited 5 cheaply 6 unlucky2. Lead-inSay: Are you familiar with these computers? Can you call them? (ask the Ss to distinguish different types of computers.)Do you know these new inventions of computer ?A wrist-worn PC has been invented recently.A pen-like computer has already been developed.(show them some pictures and ask them to make some sentences , using the Present Perfect Passive Voice.)Eg: Its rather a hot day today! Would you like to have a swim after school ?Have you ever swum in the Blue Water World（蓝色水世界） in the Oriental Suntown (东方太阳城) which has been set up in Taizhou?There a beautiful swimming pool has been built .Many high buildings have been set up.Lots of flowers and trees have been planted.A new bridge has been completed.Step2: DiscoveringAsk the Ss to discover whether these sentences have something in common. Help them to learn the useful structure : the Present Perfect Passive Voice. Step3: Discussion : learning the structureGive some explanations1构成： 主动语态 被动语态现在完成时 have/has done-àhave/has been doneHe has been sent to study the new technology in the company.The dirty clothes have not been washed.Have the windows been cleaned?How many shopping centers have been built in this city?2. 只有及物动词才有被动语态，不及物动词（词组）没有被动语态, 如:happen, take place,die, appear, disappear, fail, remain, lie, last, sit ,stand, break out, come true, belong to等如：What has happened to your brother?3但许多不及物动词加介词或副词构成的短语动词，相当于及物动词，也可以有被动语态。但短语动词是一个不可分割的整体，变为被动语态时，不可丢掉构成短语的介词或副词。如：The child has been taken good care of by Grandma Wang all these years.A notice has been put up on the wallStep4: Practice and exercises1.Change the following sentences into the Present Perfect Passive Voice.!). We have completed all the preparations for the task, and were ready to start.2). This company has produced new types of computers.3). They have interviewed several teachers for the job.4). George has sent some texts and pictures to his friends cellphone.5). They have developed some programmes for the human resource department of their company.2.Change the following sentences into the Present Perfect Passive Voice. Put the verbs into correct form. Recently we have bought a new personal computer. We have used the computer every day since we bought it. We have just joined our computer to the Internet. However, we have found many problems with it. So we have decided to ask a professional man to fix it. Soon he has fixed the computer. He has built a PC way we wanted . How excited we are! These days we have written a lot of E-mails on the computer. We have decided to write a report about the positive and the negative effects of using computers.3. Do some exercises: choiceStep5: Using the structure : Play a gameWhat has been decided.1. Give The Ss the situation : Get into groups of four. Your task is to decide what has been decided for the class .Take turns to make the ideas as interesting or as lively as you can.2. Give the Ss some examples:S1:
