届一轮复习人教版必修二Unit3Computers单元教案15页word版.docx

1、届一轮复习人教版必修二Unit3Computers单元教案15页word版2019届一轮复习人教版必修二Unit3Computers单元教案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 compute

2、rs.Meanwhile they can learn some reading strategies such as skimming and 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 us

3、e some important words and phrases in this passage.Teaching Difficult 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

4、 of the text.2.Scanning to get the details from the passage.3.Explanations 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

5、multimedia.Teaching Procedures：Step 1 Warming up1.Greeting the students 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 abo

6、ut what they are going to learn.Besides，students are expected to have 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.No

7、w lets see whether you can name them in English correctly，and talk about 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：

8、A huge computer is built to solve some mathematical problems.But，in my 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 ca

9、n solve all kinds of problems and is widely used in offices，schools，shops，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

10、 can you tell what they have in common?Any volunteers?S6：Let me try.I 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 m

11、iddle school students，we should try to learn how to use computers.T：Well，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

12、 about computers and can you say something about how computers have changed 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?Volun

13、teer!S9：Ill have a try.I know that computers have developed from large 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

14、 you are all interested in computers，you may go on studying computers，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 co

15、mputer to teach us English，arent you?S11：In my opinion，in the modern society，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

16、 and more important in our lives.But learning more about computers is 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

17、 get the general idea of this passage.After two minutes.T：Time is up.Who 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

18、the relationship of computers and humans.Task 2.Scan for the details.T：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 hap

19、pened 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?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” i

20、n 1936，as I could solve any mathematical problem.In the 1960s，I was given 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

21、 all the answers to the questions.Your mind really works like a computer!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，w

22、hich，I am sure，will help you remember the facts easily.Suggested answers： 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 be

23、came smaller.1960s：The first family of computers connected to each other.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 th

24、e history of computers easily with the help of the timeline，cant you?Please 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 Peri

25、od 1The general idea of the text：Questions1.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 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” a

26、nd “with”6.“There were times when. ”Step 7 Record after Teaching Period 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

27、 do some exercises for consolidation，and learn how to use the Present 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

28、perfect passive voice.Teaching Difficult Points：How to master the usages 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 Procedur

29、es：Step 1 RevisionT：Boys and girls，in last period we learned something 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 Ch

30、arles Babbage.It could follow instructions from cards with holes.In 1936，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 intell

31、igence”.In the 1960s，the computer got his new transistors.Its size was 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 inf

32、ormation and communicate with each other around the world by the Internet.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 followi