高一人教课标必修2unit3 computers全单元的

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

2、nd scanning.Teaching Aims：1.Train the students reading 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

3、Points：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.Explanat

4、ions and practice to help the students master some language points.4.Discussion to help the students understand better what theyve learned and to use the knowledge theyve learned in this period.Teaching Aids：1.A tape recorder.2.A multimedia.Teaching Procedures：Step 1 Warming up1.Greeting the student

5、s as usual. 2.Introduce the topic of computersShow the five pictures （an abacus，a huge computer，a calculator，a PC，a notebook computer）and get the students name them in English.Through this task，students can have a general idea about what they are going to learn.Besides，students are expected to have

6、a discussion about what they have in common while looking at them.And they are required to use the given expressions in their discussion to express their ideas.T：Boys and girls，today I am going to introduce some machines to you.Now lets see whether you can name them in English correctly，and talk abo

7、ut them.Now work together with your partners and try to find out what they have in common. Two 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 problems.But，in my

8、 opinion，it is too big.S3：A calculator is a new calculating machine which can solve a large number mathematical problems.And I think it is very convenient to carry and use，so we often use it.S4：A PC is a personal computer，which can solve all kinds of problems and is widely used in offices，schools，sh

9、ops，at homes，etc.now.S5：A notebook computer is a kind of useful computer which can be taken conveniently like a 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 tell what they have in common?Any volunteers?S6：Let me try.I

10、think they all 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：We

11、ll，your opinions are all right.Indeed，these machines all can calculate something.Whats more，from the abacus to the notebook computer，there is a long way.But now computers have already changed our lives greatly.But do you know more about computers and can you say something about how computers have ch

12、anged our 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 your work.After a few minutes.T：Now，who would like to answer the first question?Volunteer!S9：Ill have a try.I know that computers have developed from large

13、 machines.They have been made smaller and smaller，but work faster and faster.I really cant imagine what they will be like and whether 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 go on studying computers，

14、and perhaps one day you will design your own computers and become the 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?S11：In my opinion，in the modern s

15、ociety，using the computers means grasping a tool of controlling 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.But learning more about computers is

16、also important，isnt it?OK，lets come to the reading passage “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 out who “I” am and get the general idea of this passage.After two minutes.T：Time is up.W

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

18、：Boys and girls，you will be given two more minutes to scan the passage and try to find out the answers to the following questions.Lets see who can find out the answers most quickly and 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

19、 in the 1960s?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 gi

20、ven a family connected by a network，so that I could share information 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 to the questions.Your mind really works like a comput

21、er!Step 4 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 to remember the facts in the passage by filing in the timeline on Page 19，which，I am sure，will help you remember the facts easily.Suggested answe

22、rs： Timeline1642：The computer began as 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 oth

23、er.1970s：Computers 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 have got them right.Now you can retell the history of computers easily with the help of the timeline，cant you?P

24、lease have a 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 Computers Period 1The general idea of the text：Questions1.Where were you in 1642?2.W

25、hat happened 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 with 4.simple-minded5.“as” and “with”6.“There were times when. ”Step 7 Record after Teaching Perio

26、d 2 Learning about LanguageThe General Idea of This Period：This period includes revision of the text、learning about language.From this period the students will learn how to use some of the key words and expressions in the text and do some exercises for consolidation，and learn how to use the Present

27、Perfect Passive Voice.Teaching Aims：1.Help the students to learn to use some useful words and expressions.2.Enable the students to learn how to use the present perfect passive voice.Teaching Important Point：The use of the present perfect passive voice.Teaching Difficult Points：How to master the usag

28、es of some important words and phrases and the Present Perfect Passive Voice.Teaching Methods：1.Task-based learning.2.Cooperative learning.3.Explanation and practice.Teaching Aids：1.A tape recorder.2.A multimedia.Teaching Procedures：Step 1 RevisionT：Boys and girls，in last period we learned something

29、 about the history and development of 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，the Analytical Machine was made by Charles Babbage.It could follow instructions from cards with holes.In 19

30、36，Alan Turing，the real father of computers，wrote a book to describe how computers could be made to work and built a “universal machine” to solve any mathematical problem.Later，people discovered the computer had “artificial intelligence”.In the 1960s，the computer got his new transistors.Its size was

31、 totally changes at that time.And in the early 1960s，the first family of computers were connected to each other.In 1970s，computers have brought into peoples homes.Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Inter

32、net.T：Congratulations!Youve 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 following meani

33、ngs.Now，ten students will 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 words above.Pay attention to the use and the forms of those words.The possible answers：network so that went by total

34、ly truly simple-minded Anyway deal withTask 3 T：Please finish Ex.3.Look at the sentences on Page 20.Tick the right word.Then some of you 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 competi

35、tion to design a new computer.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.5.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 conce

36、rt.Task 4T：Please turn to Page 56 and lets finish Using Words and Expressions.First look at Ex.1.Read through the words in the right-hand box below.Use some of them to name each part of a computer in the left-hand box.We have known about computer.But who can give us the exact names?The possible answ

37、ers：1.floppy disc 2.hard disc 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 then check your answers with your pa

38、rtners.And last seven students will be asked to report their answers to the class.The possible answers：1.A printer is a machine for printing text or pictures onto paper，especially once connected to a computer.2.A CD-ROM or disk is the main device that a computer uses to store information.3.A monitor

39、 is used to see your data on a computer. 4.A keyboard is used to put data into a computer.5.A CPU is often used to connect 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.A hard disc is a disc that contains computer da

40、ta.It can store a large amount of data.Step 3 GrammarThe Present Perfect Passive 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

41、 deal with information and communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.T：What verb tense is used in these sentences?And what verb voice is used in these sentences?Yes，the present perfect passive voice is used in these

42、sentences.Can you tell us the structure of the present perfect passive voice?Quite right.The structure of the present perfect passive voice is “subjecthave/has been doneobject”.The function of present perfect passive voice is indicating verbs the present perfect and the passive voice.OK，lets practis

43、e the present perfect passive voice.Task 1 T：Please turn to Page 20.Lets finish Discovering useful structures.At first，look at Ex.2.According to examples，change the following sentences into the present perfect passive voice.Put the verbs into the correct form.Suggested answers：1.A new personal compu

44、ter has been bought.2.Many problems have been found with our new computer.3.A PC has been built the way we wanted.4.Our computer has just joined to the Internet.5.The computer has been used every day since we bought it.6.A lot of e-mails have been written on the computer in the last year.Task 2T：Cla

45、ss，lets play a game called “What has been decided”.Now，get into groups of four.Your task is to decide what things have been decided for the class.Take turns to make the ideas as interesting and lively as you like.You may finish them according to EXAMPLES on Page 21，（or finish Ex.3 after class.）Then

46、collect the ones you all like best and be prepared to tell them to the class.Suggested answers：S1：It has been decided that those who know of the computer will be asked to say something in class.S2：It has been decided that those who didnt clean the blackboard will be asked to come into office after s

47、chool.Task 3T：Now，please turn to Page 57.Finish using structures.First，look at Ex.1 and change the following sentences according to the model，and pay attention to the passive voice form.First do the exercise individually，and then check your answers with your partners.After that well check the answer

48、s in class.Step 4 HomeworkT：OK，its almost time for a break.Now look at Ex.2 on Page 57.Translate the following sentences into English after class.The words and expressions in brackets may help you.Step 5 The Design of the Writing on the BlackboardUnit 3 Computers Period 2The Present Perfect Passive

49、Voice1.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 information and 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

50、：“subject+have/has been done+object”Step 6 Record after TeachingPeriod 3 Extensive ReadingThe General Idea of This Period：This period includes revision of the text，Reading and speaking on Page 22、Reading task on Page 58.In this period the students will be involved in a speaking activity about design

51、ing an android after reading the story of Andy，and learn something about the performances of a sporting robot of the 22nd century，Hua Fei in 78th Olympics and 79th Olympics，so that the students will not only improve their reading and speaking，but also their creative thinking.Teaching Aims：1.Help the

52、 students to learn about the different ways of designing the robots and give their opinions to the class.2.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

53、 their designing to the class.Teaching Methods：1.Task-based learning.2.Cooperative learning.Teaching Aids：1.A tape recorder.2.A multimedia.Teaching Procedures：Step 1 GreetingsStep 2 Reading （1）Weve learned a lot about computers，but can you imagine that computers could be put into androids or robots.

54、Think of the fun you could have!Now lets first read the passage about a robot called Andywhat it looks like and what it can do on Page 22，and then well have a designing competition to see who will design the best robots.The students read the passage for several minutes.T：A few simple questions for y

55、ou.What does Andy look like?What can it do?S2：Andy looks like a human.It is designed to play football games and can move and think like a human.Andy is really smart.T：I agree with you.Are you eager to design your smart robots?Now in small groups discuss how to design your own androids，draw a picture

56、 of your androids and write down your design.You may refer to 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 ex

57、pressions in your discussion.I think that In my opinion.What is 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 android you have designed and tell the class your design.And well see which group has designed the best a

58、ndroid.Who would like to try first?S3：Look here.This is the picture of the robot weve designed.What does it look like?Yes，it looks like a dog.We all like dogs very much.Every morning it will wake us up so that we will not be late for school.Then it will company us to school and carry our heavy bags.You know how heavy our bags are!In the evening，after