高一人教课标必修2unit3 computers全单元的教案

1、1Period 1ReadingThe General Idea of This Period：This period includes Warming up，Reading and Comprehending of Unit 3.It introduces thehistory and development of computers.From this period the students will learn more aboutcomputers.Meanwhile they can learn some reading strategies such as skimming and

2、 scanning.Teaching Aims：1.Train the studentsreading ability.2.Learn some useful words and expressions.3.Learn more about computers.Teaching Important Points：1.Help the students to understand the passage better.2.Learn how to use some important words and phrases in this passage.Teaching Difficult Poi

3、nts：1.How to help the students improve their reading ability and understand the passage better.2.Learn how to use some important words and phrases in this passage.Teaching Methods：1.Skimming the passage to get the general idea of the text.2.Scanning to get the details from the passage.3.Explanations

4、 and practice to help the students master some language points.4.Discussion to help the students understand better what theyve learned and to use theknowledge they ve learned in this period.Teaching Aids：1.Atape recorder.2.Amultimedia.Teaching Procedures：Step 1 Warming up1.Greeting the students as u

5、sual.2.Introduce the topic of computersShow the five pictures （an abacus，a huge computer，a calculator，a PC，a notebookcomputer）and get the students name them in English.Through this task，st udents can have ageneral idea about what they are going to learn.Besides ， students are expected to have adiscu

6、ssion about what they have in common while looking at them.And they are required to usethe given expressions in their discussion to express their ideas.T：B oys and girls，today I am going to introduce some machines to you.Now lets seewhether you can name them in English correctly，and talk about them.

7、Now work together withyour partners and try to find out what they have in common.2Two minutes late，five students are asked to talk about them in class.S1：An abacus is an old calculating machine used in China until now.S2：A huge computer is built to solve some mathematical pro blems.But，in my opinion

8、，itis too big.S3：A calculator is a new calculating machine which can solve a large number mathematicalproblems.And I think it is very convenient to carry and use，so we ofte n use it.S4：A PC is a personal computer，which can solve all kinds of problems and is widely usedin offices，schools，shops，at hom

9、es，etc.now.S5：A notebook computer is a kind of useful computer which can be taken conveniently likea notebook.But I think it is too expensive.T：Quite good.It seems that you are all quite familiar with these machines.But can you tellwhat they have in common?Any volunteers?S6：Let me try.I think they a

10、ll calculate something.They can deal with some maths problems.S7：I believe that they are our good friends.With their help we can finish our work quickly.S8：The 21th century is the century of information technology.As middle school students，we should try to learn how to use computers.T ： Well ， your

11、opinions are all right.Indeed ， these machines all can calculatesomething.Whats more，from the abacus to the notebook computer，there is a long way.Butnow computers have already changed our lives greatly.But do you know more about computersand can you say something about how com puters have changed ou

12、r lives.Step 2 Pre-readingShow the questions on the screen.T：Now，please have a discussion first，and then Ill ask some students to report yourwork.After a few minutes.T：Now，who would like to answer the first question?Voluntee r!S9：Ill have a try.I know that computers have developed from large machine

13、s.They havebeen made smaller and smaller，but work faster and faster.I really cant imagine what they will belike and wh ether they can take the place of human beings in the future.T：Yes，this is really a big problem.I think you are all interested in computers，you may goon studying computers，and perhap

14、s one day you will design your own computers and becomethe masters of computers.OK!Next question!S10：I think computers have changed our lives greatly.We use computers widely in our study，in our work.You are using the computer to teach us English，arent you?3S11：In my opinion，in the modern society，usi

15、ng the computers means grasping a tool ofcontrolling the world.We may communicate with each other from a very long distance.In short，we can not live freely without them.T：I agree with you.The computers are becoming more and more important in our lives.Butlearning more about computers is also importa

16、 nt，isntit?OK， lets come to the readingpassage “Who am I”.Step 3 ReadingTask 1.Skim the passage for the general idea.T：Boys and girls，you will be given two minutes to skim the passage and try to find outwho “I” am and get the general idea of this pa ssage.After two minutes.T：Time is up.Who would lik

17、e to tell us who “I” am and give the general idea of the textto the class?Volunteer!S12： Of course ， “ I ” am the computer.The passage is mainly about the history anddevelopment of computers.S13：The passage is also about the relationship of computers and humans.Task 2.Scan for the details.T：Boys and

18、 girls，you will be given two more minutes to scan the passage and try to findout the answers to the following questions.Lets see who can find out the answers most quicklyand correctly.1.Where were you in 1642?2.What happened to you in 1822?3.What were you called in 1936?4.What did you get in the 196

19、0s?5.What happened to you in the 1970s?T：Have you finished?S14：I have.I was in France as a calculating machine in 1642.In 1822，I was built as an Analytical Machine by Charles Babbage.I was called “a universal machine” in 1936，as I could solve any mathematical problem.In the 1960s ， I was given a fam

20、ily connected by a network ， so that I could shareinformation with others and we could talk to each other.In the 1970s，I was brought into peoples homes.T：You are so quick-minded that in such a short time you could find out all the answers tothe questions.Your mind really works like a computer!Step 4

21、 ComprehendingTask 3.Fill in the timeline to remember the facts.T：But can you memorize facts like a computer?I am afraid you can not.But lets try toremember the facts in the passage by filing in the timeline on Page 19，which，I am sure，willhelp you remember the facts easily.Suggested answers：4Timelin

22、e1642：The computer began a s a calculating machine.1822：The Analytical Machine was built by Charles Babbage.1936：Alan Turing wrote a book to describe how computers could be made.1960s：Computers had new transistors and became smaller.1960s：The first family of computers connected to each other.1970s：C

23、omputers were brought into peoples homes.Now：Computers connect people all over the world together.T：Have you finished?If so，please check your answers yourself.Im sure all of you havegot them right.Now you can retell the history of computers easily with the help of the timeline，cant you?Please have a

24、 try，boys and girls!Step 5 Homework1.Recite the key sentences.2.Prepare for Learning About Language.3.Try to retell the text using about 100 words.Step 6 The Design of the Writing on the BlackboardUnit 3 ComputersPeriod 1The general idea of the text：Questions1.Where were you in 1642?2.What happened

25、to you in 1822?3.What were you called in 1936?4.What did you get in the 1960s?5.What happened to you in the 1970s?Language points：1.in common/have. in common （with）.2.in ones opinion3.deal with4.simple-minded5.“as” and “with”6.“There were times when. ”Step 7 Record after TeachingPeriod 2Learning abo

26、ut LanguageThe General Idea of This Period：This period includes revision of the text 、 learning about language.From this period thestudents will learn how to use some of the key words and expressions in the text and do someexercises for consolidation，and learn how to use the Present Perfect Passive

27、Voice.Teaching Aims：1.Help the students to learn to use some useful words and expressions.2.Enabl e the students to learn how to use the present perfect passive voice.Teaching Important Point：5The use of the present perfect passive voice.Teaching Difficult Points：How to master the usages of some imp

28、ortant words and phrases and the Present PerfectPassive Voice.Teaching Methods：1.Task-based learning.2.Cooperative learning.3.Explanation and practice.Teaching Aids：1.Atape recorder.2.Amultimedia.Teaching Procedures：Step 1 RevisionT：Boys and girls，in last period we learned something about the histor

29、y and developmentof computers.Now who would like to retell the text with the help of these figures?S1：Let me try.In 1642，a calculating machine was used in France.Then in 1922，theAnalytical Machine was made by Charles Babbage.It could follow instructions from cards withholes.In 1936，Alan Turing，the r

30、eal father of computers，wro te a book to describe howcomputers could be made to work and built a “universal machine” to solve any mathematicalproblem.Later，people discovered the computer had “artificial intelligence”.In the 1960s，thecomputer got his new transistors.Its size was totally changes at th

31、at time.And in the early 1960s，the first family of computers were connected to each other.In 1970s，computers have brought intopeoples homes.Now computers have been used bybillions of people to deal with informationand communicate with each other around the world by the Internet.T：Congratulations!You

32、ve done very well.Now try to do the same to your partners，OK!Step 2 Words and ExpressionsTask 1T：Please turn to Page 19 and finish Discovering Useful Words and Expressions.At first，look at Ex.1.From the reading passage ， find the words and expressions with the followingmeanings.Now， ten students wil

33、l be asked to give the words.Who can?Volunteers!Check the answers together.Task 2.T：Well done.Now please look at Ex 2.and complete the passage with some of the wordsabove.Pay attention to the use and the forms of those words.The possible answers：ne twork so that went by totally truly simple-minded A

34、nyway deal withTask 3T：Please finish Ex.3.Look at the sentences on Page 20.Tick the right word.Then some ofyou will be asked to read the sentences one by one.The possible answers：1.Life totally changed when I went to university.2.I was amazed to find that I won the competition to design a new comput

35、er.3.The competition was so exciting that we cheered all evening.4.I was so excited at the thought of meeting Yang Liwei that I could not sleep.65.Robots can be bought so cheaply that I gave one to each of my friends.6.It was so unlucky that you lost your watch at the concert.Task 4T ： Please turn t

36、o Page 56 and lets finish Using Words and Expressions.First look atEx.1.Read through the words in the right-hand box below.Use some of them to name each part ofa computer in the left-hand box.We have known about computer.But who can give us the exactnames?The possible answers：1.floppy disc 2.hard di

37、sc 3.scanner 4.modem 5.CD-ROM 6.monitor 7.keyboard 8.printerTask 5T：Now please look at Ex.2.Complete the sentences with some of the words in the right-hand box above.You can use each word only once.First do the exercise individually，and thencheck yo ur answers with your partners.And last seven stude

38、nts will be asked to report theiranswers to the class.The possible answers：1.A printer is a machine for printing text or pictures onto paper，especially once connectedto a computer.2.ACD-ROM or disk is the main device that a computer uses to store information.3.Amonitor is used to see your data on a

39、computer.4.Akeyboard is used to put data into a computer.5.ACPU is often used to conne ct computers to each other through phone lines.6.Data can also be stored in a floppy disc，which is small and can be carried easily.7.Ahard disc is a disc that contains computer data.It can store a large amount of

40、data.Step 3 GrammarThe Present PerfectPassive VoiceT：Boys and girls，now please pay attention to the following sentences in the text：1.As the years have gone by，I have been made smaller and smaller.2.Since then，my family and I have been used by billions of people to deal with informationand communica

41、te with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.T：Whatverb tense is used in thesesentences?Andwhat verb voice is used in these sentences?Yes，the present perfect pa ssive voice is used in these sentences.Can you tell us the structur

42、e of the present perfect passive voice?Quite right.The structure of the present perfect passive voice is “subjecthave/has beendoneobject”.The function of present perfect passive voice is indicating verbs the presentperfect and the passive voice.OK，lets practise the present perfect passi ve voice.Tas

43、k 1T：Please turn to P age 20.Lets finish Discovering useful structures.At first，lookat Ex.2.According to examples，change the following sentences into thepresent perfect passive voice.Put the verbs into the correct form.Suggested answers：1.Anew personal computer has been bought.2.Many problems have b

44、een found with our new computer.3.APC has been built the way we wanted.74.Our computer has just joined to the Inter net.5.The computer has been used every day since we bought it.6.Alot of e-mails have been written on the computer in the last year.Task 2T：Class，lets play a game called “What has been

45、decided”.Now，get into groups offour.Your task is to decide what things have been decided for the class.Take turns to make the ideas asinteresting and lively as you like.You may finish them according to EXAMPLES on Page 21， （orfinishEx.3 afterclass.）Then collect the onesyou all like best and be prepa

46、red to tellthem to the class.Suggested answers：S1：It has been decided that those who know of the computer will be asked to say somethingin class.S2：It has been decided that those who didnt clean the blackboard will be asked to comeinto office after school.Task 3T：Now，pleas e turn to Page 57.Finish u

47、sing structures.First，look at Ex.1 and change thefollowing sentences according to the model，and pay attention to the passive voice form.First dothe exercise individually，and then check your answers with your partners.After that well checkthe answers in class.Step 4 HomeworkT：OK，its almost time for a

48、 break.Now look at Ex.2 on Page 57.Translate the followingsentences into English after class.The words and expressions in brackets may help you.Step 5 The Design of the Writing o n the BlackboardUnit 3 ComputersPeriod 2The Present Perfect Passive Voice1.As the years have gone by，I have been made sma

49、ller and smaller.2.Since then，my family and I have been used by billions of people to deal with informationand communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.Structure：“subject+have/has been done+object”Step 6 Record afte

50、r TeachingPeriod 3Extensive ReadingThe General Idea of This Period：This perio d includes revision of the text，Reading and speaking on Page 22、Reading taskon Page 58.In this period the students will be involved in a speaking activity about designing anandroid after reading the story of Andy，an d lear

51、n something about the performances of asporting robot of the 22nd century，Hua Fei in 78th Olympics and 79th Olympics，so that thestudents will not only improve their reading and speaking，but also their creative thinking.Teaching Aims：1.Help the students to learn about the different ways of designing

52、the robots and give theiropinions to the class.82.Enable the students to discuss to design their own robots.Talk about the different ways of designing the robots.Teaching Important and Difficult Points：How to design their own robots and report their designing to the class.Teaching Methods：1.Task-bas

53、ed learning.2.Cooperative learning.Teaching Aids：1.Atape recor der.2.Amultimedia.Teaching Procedures：Step 1 GreetingsStep 2 Reading （1）Weve learned a lot about computers，but can you imagine that computers could be put intoandroids or robots.Think of the fun you c ould have!Now lets first read the pa

54、ssage about a robotcalled Andywhat it looks like and what it can do on Page 22，and then well have a des igningcompetition to see who will design the best robots.The students read the passage fo r several minutes.T：Afew simple questions for you.What doesAndy look like?What can it do?S2：Andy looks lik

55、e a human.It is designed to play football games and can move and thinklike a human.Andy is really smart.T：I agree with you.Are you eager to design your smart robots?Now in small groups discusshow to design your own androids ， draw a picture of your androids and write down yourdesign.You may refer to

56、 the following questions：1.What would you like it to look like?2.What are some of the things you would like it to do?3.Do you want it to be like a man or a woman or neither?4.How much would it cost?T：And dont forget to use the following expressions in your discussion.I think thatIn my opinion.What i

57、s your reason?I have decided that.After several minutes.T：Now，Ill check your work.One from each group will show your picture of the androidyou have designed and tell the class your design.And well see which group has designed the bestandroid.Who would like to try first?S3：Look here.This is the pictu

58、re of the robot weve designed.What does it look like?Yes，itlooks like a dog.We all like dogs very much.Every morning it will wake us up so that we will notbe late for school.Then it will company us to school and carry our heavy bags.You know howheavy our bags are!In the evening，after a whole days ha

59、rd work，it will play beautiful music tohelp us relax.Maybe it will cost at least 2000 yuan，but we dont think it is too expensive to havesuch a good friend.9S4：Well，wed like to design our robot in this way.We would like it to look like the famousfootballer Beckham who serves as a striker on the footb

60、all team.It has the most advanced program，so it can move and think like Beckham，and of course can shoot good goals like him.We wouldlike it to enter the next Electronic World Cup，and we are sure that it will win the cup!T：Your designs are very unusual and smart.I really want to go on appreciating yo