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高一人教课标必修2unit3 computers全单元的教案

高一人教课标必修2unit3 computers全单元的教案
高一人教课标必修2unit3 computers全单元的教案

Period 1 Reading

The 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 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 use 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 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 they’ve learned and to use the knowledge they’ve learned in this period.

Teaching Aids:

1.A tape recorder.

2.A multimedia.

Teaching Procedures:

Step 1 Warming up

1.Greeting the students as usual.

2.Introduce the topic of computers

Show 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,st udents can have a general idea about 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:B oys and girls,today I am going to introduce some machines to you.Now let’s 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:A huge computer is built to solve some mathematical pro blems.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 ofte n use it.

S4:A PC is a personal computer,which can 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 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 middle 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.What’s 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 com puters have changed our lives.

Step 2 Pre-reading

Show the questions on the screen.

T:Now,please have a discussion first,and then I’ll ask some students to report your work.

After a few minutes.

T:Now,who would like to answer the first question?V oluntee r!

S9:I’ll 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 can’t imagine what they will be like 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 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 computer to teach us English,aren’t 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 and more important in our lives.But learning more about computers is also importa nt,isn’t it?OK,let’s come to the reading passage “Who am I”.

Step 3 Reading

Task 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 pa ssage.

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?V olunteer!

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: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.Let’s 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 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 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 people’s 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 computer!

Step 4 Comprehending

Task 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 let’s 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 answers:

Timeline

1642: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:Computers were brought into people’s homes.

Now:Computers connect people all over the world together.

T:Have you finished?If so,please check your answers yourself.I’m sure all of you have got them right.Now you can retell the history of computers easily with the help of the timeline,can’t you?Please have a try,boys and girls!

Step 5 Homework

1.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 Blackboard

Unit 3 Computers

Period 1

The general idea of the text:

Questions

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 1960s?

5.What happened to you in the 1970s?

Language points:

1.in common/have... in common (with)...

2.in one’s opinion

3.deal with

4.simple-minded

5.“as” and “with”

6.“There were times when... ”

Step 7 Record after Teaching

Period 2 Learning about Language

The 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 Perfect Passive 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:

The use of the present perfect passive voice.

Teaching Difficult Points:

How to master the usages of some important words and phrases and the Present Perfect Passive V oice.

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 Revision

T: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 Charles Babbage.It could follow instructions from cards with holes.In 1936,Alan Turing,the real father of computers,wro te a book to describe how computers could be made to work and built a “universal machine” to solve any mathematical https://www.wendangku.net/doc/7313198336.html,ter,people discovered the computer had “artificial intelligence”.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 people’s homes.Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Internet.

T:Congratulations!You’ve done very well.Now try to do the same to your partners,OK!

Step 2 Words and Expressions

Task 1

T: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 meanings.Now,ten students will be asked to give the words.Who can?V olunteers!

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:

ne twork so that went by totally truly simple-minded Anyway deal with

Task 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 competition 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 concert.

Task 4

T:Please turn to Page 56 and let’s finish Using Words and Expressions.First look at Ex.1.Read through the words in the right-hand box https://www.wendangku.net/doc/7313198336.html,e 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 answers:

1.floppy disc

2.hard disc

3.scanner

4.modem

5.CD-ROM

6.monitor

7.keyboard

8.printer

Task 5

T:Now please look at https://www.wendangku.net/doc/7313198336.html,plete 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 yo ur answers with your partners.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 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 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.A hard disc is a disc that contains computer data.It can store a large amount of data.

Step 3 Grammar—The Present Perfect

Passive V oice

T: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 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 pa ssive voice is used in these sentences.

Can you tell us the structure of the present perfect passive voice?

Quite right.The structure of the present perfect passive voice is “subject+have/has been done+object”.The function of present perfect passive voice is indicating verbs’the present perfect and the passive voice.OK,let’s practise the present perfect passi ve voice.

Task 1

T:Please turn to P age 20.Let’s 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 computer 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 Inter net.

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 2

T:Class,let’s play a game called “What has been decided”.Now,get into groups of four.Y our 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.Y ou may finish them according to EXAMPLES on Page 21,(or finish Ex.3 after class.)Then 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 didn’t clean the blackboard will be asked to come into office after school.

Task 3

T:Now,pleas e 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 we’ll check the answers in class.

Step 4 Homework

T:OK,it’s 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 o n the Blackboard

Unit 3 Computers

Period 2

The Present Perfect Passive V oice

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 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:

“subject+have/has been done+object”

Step 6 Record after Teaching

Period 3 Extensive Reading

The General Idea of This Period:

This perio d 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 designing an android after reading the story of Andy,an d 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 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 their designing to the class.

Teaching Methods:

1.Task-based learning.

2.Cooperative learning.

Teaching Aids:

1.A tape recor der.

2.A multimedia.

Teaching Procedures:

Step 1 Greetings

Step 2 Reading (1)

We’ve learned a lot about computers,but can you imagine that computers could be put into androids or robots.Think of the fun you c ould have!Now let’s first read the passage about a robot called Andy—what it looks like and what it can do on Page 22,and then we’ll have a des igning competition to see who will design the best robots.

The students read the passage fo r several minutes.

T:A few simple questions for you.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 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 don’t forget to use the following expressions in your discussion.

I think that

In my opinion...

What is your reason?

I have decided that...

After several minutes.

T:Now,I’ll check your work.One from each group will show your picture of the android you have designed and tell the class your design.And we’ll see which group has designed the best android.Who would like to try first?

S3:Look here.This is the picture of the robot we’ve 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 a whole day’s hard work,it will play beautiful music to help us relax.Maybe it will cost at least 2000 yuan,but we don’t think it is too expensive to have such a good friend.

S4:Well,we’d like to design our robot in this way.We would like it to look like the famous footballer Beckham who serves as a striker on the football 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 would like 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 your designs,but time is limited.Will you put up your pic tures of the robots you have designed with instructions on the back wall,and then decide which group has designed the best androids after comparison?

Step 3 Reading (2)

Class,let’s come to the Reading Task on Page 58.First read the passage quickly and then fill in the chart of Exercise 1 and keep a record of his performances of the sporting robot of the 22nd century,Hua Fei in 78th Olympics and 79th Olympics.After doing it individual ly,please check your answers with your partners,and then we will check the answers in class.

Step 4 Homework

T:It’s almost time for a break.Now homework for you today.

https://www.wendangku.net/doc/7313198336.html,pare the designs of the androids of each group and try to decide which one is the best.

2.Suppose you have been lucky enough to be allowed to interview Hua Fei in hospital for your school paper.Work out some questions together with your partner,and then interview each other.

Step 5 The Design of the Writing on the Blackboard

Unit 3 Computers

Period 3

dances

Silve r medal

Step 6 Record after Teaching

Period 4 Listening

The General Idea of This Period:

This period includes listening and writing on Page 21;listening on Page 55 and listening task on Page 58.Apparently,the purpose of this period is to train the students’listening—for information;for comprehension and for language.Meanwhile,the students will be trained to express their own opinions after listening.

Teaching Aims:

1.Help the students to learn about the knowledge of information technology.

2.Enable the students to get the main ideas of the listening materials.

Teaching Important and Difficult Points:

1.How to get the main idea and information in details.

2.Express their own opinions after listening.

Teaching Methods:

1.Task-based learning.

2.Cooperative learning.

Teaching Aids:

1.A tape recorder.

2.A multimedia.

Teaching Procedures:

Step 1 Revision

Check the students’ interviews.

Get the students to work together with their partners to interview each other.

Step 2 Listening and writing (Page 21)

Task 1 Listen to a conversation

T:Class,as we all know,the 21st century is the century of information and technology.Next we will listen to a conversation about differe nt kinds of information technology or IT.And as we know,each kind of information technology has its own advantages and disadvantages.So from this conversation we will listen for the advantages and disadvantages of each one.But before listening let’s first look at the pictures on Page 21 and the form on Page 22 to make sure what you are going to do while listening.OK,let’s begin.

The students listen to the conversation for the first time.

Task 2 Discussion and filling

T:You can see there are a TV,a CD-ROM,a computer,a radio,a DVD and newspaper here.Now try to finish filling in the form with the information you have just got from the conversation.

Book You can get information Sometimes it is out-of-date T:Now,let’s discuss the advantages and disadvantages of each type of IT in small groups and then decide which type of IT is best for you to use,according to the form above and explain the reasons.While discussing,remember to use the following expressions:

I think that...

In my opinio n...

I believe that...

I agree because...

I disagree because...

I’ve decided that...

Step 3 Listening (Page 55)

T:Now come to the listening on Page 55.Before you listening,please read the requirements of Ex.1.After that,you will find the three robots from the pictures above on Page 55 and num ber them.

The possible number:

Picture 1—No.3 Picture 3—No.2 Picture 4—No.1

T:Now please look at these boxes on Page 55 before you listen to the tape again,and try to find out the listening points.Pay more attention to the se points and you may make some notes while listening.

Three minutes later.

T:Now try to fill in the boxes with the information from the listening material,and then check your answers with your partners.

Size

What it looks l ike

What it can do

Telephone number Room-1234 Step 4 Listening task (Page 58)

T:Now please turn to Page 58,and finish the listening task.

As we know,computers are used widely and put into androids.Please look at the pictures above.There are two androids in it.One works as a maid.The other works in a car factory.They are friends and they were made at the same ti me.Now they are talking about their lives and what it feels like to be android.OK,please listen carefully to their problems and fill in the form.I’ll play the tape twice.

After listening.

T:Try to fill in the forms as quickly as you can,and then we will check the answers in class.

Their programmer decided them

They are not able to change jobs

Their programmer does About how they are different from people They can not smell

About how they are the same as people

T:From what we have just listened,we know that Sally and Brenda have some troubles in their lives.They are treated badly.Now you are going to make a list of the rights that androids should have so that they will be treated better.You can work with your partners and have discussion.

Suggested an swers:

1.They should be able to choose the work they do.

2.They should have their own time.

3.They should be able to change their jobs.

4.They should be able to decide their own future.

5.They should be able to taste,smell,feel,etc.

Step 5 Assignment

T:Class,I really appreciate your good performance in this listening class.I can see that your listening has greatly improved since you came to the senior school.Keep on your good work!OK,we have no time left.I’d like to assign you some homework to do.

1.Go over the listening and writing on Page 21 and get ready for the writing.

Step 6 The Design of the Writing on the Blackboard

Unit 3 Computers

Period 4

2 m

Large,energetic robot

Climbs mountains;plays guitar;sings karaoke

Step 7 Record after Teaching

Period 5 Writing

The General Idea of This Period:

This period includes speaking and writing on Pag e 22 and writing on Page 23.The purpose is to encourage the Ss to think and talk creatively about computers and androids,express their own opinions using words and expressions concerning computers and androids,and organize their ideas into a compositio n.

Teaching Aims:

1.Enable the students to learn how to write a report about their choice.

2.Enable the students to learn the writing way of expressing ideas and giving reasons to support the ideas.

Teaching Important and Difficult Point:

How to make a decision about which kind of computer to buy and explain why.

Teaching Methods:

1.Task-based learning.

2.Cooperative learning.

Teaching Aids:

A projector and multimedia.

Teaching Procedures:

Step 1 Speaking and writing (Page 22)

T:Class,suppose you and your partner have been asked to help choose computers for your school.You have looked at several computers.Talk about the special things each computer has.Make a decision about which kind of computer to buy and explain why.And then you are going to write a report about your choice There is a list of things your computer could have.

A fast PC the monitor is smaller

Improved disc storage used recycled materials

Internet a flat screen

Students talk about the special things each computer can do.

T:So much for the talking.And now you will be given five minutes to write a report about your choice.After that some of you will be asked to present your report to the class.In your writing try to use the present perfect pass ive in your report.You may begin your r eport like this:We looked at many different computers.The one we have chosen is the PEP personal computer.One of the main reasons is that it is suitable for schools.We found out that...

Five minutes later,severa l students begin to present their reports to the class,and the teacher will show two or three reports using the projector to find out and correct the possible mistakes with the class.

Possible version

We looked at many different computers.The one we have chosen is the PEP personal computer.One of the main reasons is that it is suitable for schools.We found out that it looked not only cute but also advanced.

First,it has a flat screen which makes the computer pretty attractive.But the second and the most important aspect about the PEP is that it has undergone a lot of improvements in many respects.For example,it contains improved disc storage and that means it’s faster PC.It’s suitable to be connected to the Internet.Also the PC has a smaller monitor and is made with used recycled materials which do no harm to the environment.

In a word,we think it is suitable for our school.

T:Thank you for helping choose computers which are suitable for our school,and I’m sure with these computers to be equipped in our school we will improve the teaching conditions and teaching quality of course.

Now,let’s come to the writing on Page 23.

Step 2 Writing(Page 23)

T:Boys and girls,suppose you are an android and work for a family with one child who is very spoiled.The parents want you to do everything for them.The parents are kind,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 tell the child “no”?You may begin like this:Hello,everyone.My name is______.I’m a 321 model android.I work for the Li family...

Now,you will also be given five minutes to write your opinion and feelings.

Five minutes later,the teacher shows two or three of the passages written by the students using the projector to find out and correct the possible mistakes with the class.

Possible version

Hello,everyone.My name is ______.I’m a 321 model android.I work for the Li family.My job is taking care of their only son.The parents are nice but the boy is spoiled.The family asked me to do everything for them,from shopp ing to cleaning the floors.But w hat’s terrible,the child asked me to do his homework!That’s too much!I’m an android,yes,but I’ve got my mind and feelings I can’t do things that are harmful to people against my will!

Step 3 Summary and Homework

T:Boys and girls,in this period,we worked hard and wrote two short compositions.You’ve not only learned to make your choices or express your ideas but also learned to give your reasons to support your choices or ideas.It’s really a practical w riting job for you to do,don’t you think so?Such writing jobs,I’m sure,will help you improve your writing skills.Now homework for you today—go over the w hole unit.

Step 4 The Design of the Writing on the Blackboard

Unit 3 Computers

Period 5

A fast PC the monitor is smaller

Improved disc storage used recycled materials

Internet a flat screen

Step 5 Record after Teaching

Period 6 Assessment

The General Idea of This Period:

This period is to help the Ss to elevate their acquisition about

computers androids and IT and their ability of employing the words,expressions,grammar learned in this unit.

Teaching Aims:

1.Elevate efficiently the students’ knowledge about computers,androids and IT.

2.Elevate the Ss ability of using the words and expressions and grammar learned in this unit.

Teaching Important and Difficult Point:

Help the Ss learn to assess whether their knowledge about this topic has increased.

Teaching Methods:

1.Question-and-answer activity.

2.Pair work and group work to make the students work in class.

Teaching Aids:

1.A multimedia.

2.A blackboard.

Teaching Procedures:

Step 1 Greetings

T:Good morning,boys and girls.

Ss:Good morning,Miss.

Step 2 Revision

T:So far we have finished this unit which is about...?

Ss:It’s about the history and development of computers.

S1:I have learned tremendous about the computers,androids and I’ve made up my mind to learn computer science in the future if possible.

T:Terrific.

Step 3 Assessment

T:Today we are going to see how hard you worked and how much more you k now about computers.Now work with your partners and finish these questions first.

非测试性评价

1.To what extent are computer and Internet becoming part of your life?

I use the computer and/or Internet to:

—type my homework

—draw pictures

—play games

—communicate with my friends

—gather related information for my lessons.

—buy the things I like,eg: books and clothes.

—listen to music

—watch movies.

2.What else do you think the computer and Internet will help you to do?

_______________________________________________

3.Which part(s)of the computer do you think need(s)more improvement?Why?You can use Exercise 1 in the workbook(P56)as reference for the parts of the computer.

_______________________________________________

4.Look at the flow chart explaining how the computer te chnology has been developing and complete it with your partners.Then give a brief oral presentation on the development of computer technology with the help of the chart.When you’re preparing it,you can refer to the reading passage on Page 18 of the Student’s Book.Your oral presentation will be less than three minutes.

测试性评价

Ⅰ.单词拼写

1.In c with most educated people,he prefers classical music to jazz.

2.The inventio n of computer was a ______(技术的) revolution.

3.He is quite clever a boy though he looks s -minded.

4.In the past 20 years,my hometown has t changed.

https://www.wendangku.net/doc/7313198336.html,puters are often used to deal with information and communicate with each other around the world by the I .

6.There are many ways of ______(通讯) in the modern world,such as telephone,fax,and so on.

7.In the early 1960s,computers were connected by a n ,so that people could share information and talk to each other.

8.He is so clever that he is considered to have high ______(智力).

9.She was ______(徘徊) up and down the road,not knowing what to and where to go.

10.Could you tell me the advantages and d of being famous?

Possible answ ers:https://www.wendangku.net/doc/7313198336.html,mon 2.technological 3.simple 4.totally 5.Internet https://www.wendangku.net/doc/7313198336.html,munication https://www.wendangku.net/doc/7313198336.html,work 8.intell-igence 9.wandering 10.disadvantages

Ⅱ.句型转换/完成句子

1.Personally,I think the team who won first place cheated.

______ ______ ______,I think the team who won first place cheated.

2.I’m afraid s omething urgent has risen;I won’t be able to see you tonight.

I’m afraid something urgent has ______ ______;I won’t be able to see you tonight.

3.As time ______ ______(流逝),my memory seems to get worse.

4.They’ve bought many books which are ______ ______(适合) teenagers.

5.The new type of mobile phone is expensive.______,it’s worth buying it.

6.He was foolish enough to accept her invitation.

He was ______ foolish ______ he accepted her invitation.

7.How are you going to ______ ______(处理) the water pollution of the area?

8.You have to ______ ______ ______(做出决定) whether to accept the job or not.

Possible answers:1.I n my opinion https://www.wendangku.net/doc/7313198336.html,e up 3.goes by 4.suitable for 5.Anyway/Anyhow 6.so,that 7.deal with 8.make a choice

Step 4 The Design of the Writing on the Blackboard

Unit 3 Computers

Period 6

In my opinion so...that

come up deal+with

goes by make a choice

suitable...for

Step 5 Record after Teaching

Activities and Research:

Whether or not should the computer be used in teaching?

Suppose your classroom has been equipped with a computer.Your teachers have used a lot the computer in their teaching.Some of your classmates are for using the computer in teaching,but the others are against using the computer in teaching,and you try to work in two sides:

1.Bring this topic to your classmates,and divide the class into two sides,each of which has several small groups.

2.Make a list of the advantages/disadvantages about using the computer in teaching based on the opinions or ideas of those who are for/against using the computer in teaching.

3.Share your list with other groups,put your lists together to make one comprehensive list out of what each groups has come up.

4.You may also want to read and surf the Internet about different views on using the computer in teaching to find more reasons to support y our ideas.

5.Then,come to a reasonable decision about whether or not the computer should be used in teaching.

6.Create a debate in class on whether or not the computer should be used in teaching.

7.While debating,you will try to use the following expressions.

I think that... Yes,I think so. I don’t think so. I agree that... I don’t agree. I’m afraid not. In my opinion,In addition, Besides, First...,second..., In a word/In brief

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(北师大版)高一数学必修1全套教案

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高中数学必修一教案全套

高中数学必修一教案全套 Last revision date: 13 December 2020.

『高中数学·必修1』第一章集合与函数概念 课题:§1.1 集合 教材分析:集合概念及其基本理论,称为集合论,是近、现代数学的一个重要的基础,一方面,许多重要的数学分支,都建立在集合理论的基础上。另一方 面,集合论及其所反映的数学思想,在越来越广泛的领域种得到应用。 课型:新授课 教学目标:(1)通过实例,了解集合的含义,体会元素与集合的理解集合“属于” 关系; (2)能选择自然语言、图形语言、集合语言(列举法或描述法)描述不 同的具体问题,感受集合语言的意义和作用; 教学重点:集合的基本概念与表示方法; 教学难点:运用集合的两种常用表示方法——列举法与描述法,正确表示一些简单的集合; 教学过程: 一、引入课题 军训前学校通知:8 月15日8点,高一年段在体育馆集合进行军训动员;试问 这个通知的对象是全体的高一学生还是个别学生? 在这里,集合是我们常用的一个词语,我们感兴趣的是问题中某些特定(是高 一而不是高二、高三)对象的总体,而不是个别的对象,为此,我们将学习一个新 的概念——集合(宣布课题),即是一些研究对象的总体。 阅读课本 P-P内容 二、新课教学 (一)集合的有关概念 1. 集合理论创始人康托尔称集合为一些确定的、不同的东西的全体,人们能 意识到这些东西,并且能判断一个给定的东西是否属于这个总体。 2. 一般地,研究对象统称为元素(element),一些元素组成的总体叫集合(set), 也简称集。 ——————————————第 1 页(共 70页)——————————————

2020年人教版高中数学必修一全套精品教案(完整版)

2020年人教版高中数学必修一全套精品教 案(完整版) 第一章集合与函数 §1.1.1集合的含义与表示 一. 教学目标: l.知识与技能 (1)通过实例,了解集合的含义,体会元素与集合的属于关系; (2)知道常用数集及其专用记号; (3)了解集合中元素的确定性.互异性.无序性; (4)会用集合语言表示有关数学对象; (5)培养学生抽象概括的能力. 2. 过程与方法 (1)让学生经历从集合实例中抽象概括出集合共同特征的过程,感知集合的含义. (2)让学生归纳整理本节所学知识. 3. 情感.态度与价值观 使学生感受到学习集合的必要性,增强学习的积极性. 二. 教学重点.难点

重点:集合的含义与表示方法. 难点:表示法的恰当选择. 三. 学法与教学用具 1. 学法:学生通过阅读教材,自主学习.思考.交流.讨论和概括,从而更好地完成本节课的教学目标. 2. 教学用具:投影仪. 四. 教学思路 (一)创设情景,揭示课题 1.教师首先提出问题:在初中,我们已经接触过一些集合,你能举出一些集合的例子吗? 引导学生回忆.举例和互相交流. 与此同时,教师对学生的活动给予评价. 2.接着教师指出:那么,集合的含义是什么呢?这就是我们这一堂课所要学习的内容. (二)研探新知 1.教师利用多媒体设备向学生投影出下面9个实例: (1)1—20以内的所有质数; (2)我国古代的四大发明; (3)所有的安理会常任理事国; (4)所有的正方形;

(5)海南省在2004年9月之前建成的所有立交桥; (6)到一个角的两边距离相等的所有的点; (7)方程2560 -+=的所有实数根; x x (8)不等式30 x->的所有解; (9)国兴中学2004年9月入学的高一学生的全体. 2.教师组织学生分组讨论:这9个实例的共同特征是什么? 3.每个小组选出——位同学发表本组的讨论结果,在此基础上,师生共同概括出9个实例的特征,并给出集合的含义. 一般地,指定的某些对象的全体称为集合(简称为集).集合中的 每个对象叫作这个集合的元素. 4.教师指出:集合常用大写字母A,B,C,D,…表示,元素常 用小写字母,,, a b c d…表示. (三)质疑答辩,排难解惑,发展思维 1.教师引导学生阅读教材中的相关内容,思考:集合中元素有 什么特点?并注意个别辅导,解答学生疑难.使学生明确集合元素的 三大特性,即:确定性.互异性和无序性.只要构成两个集合的元素是 一样的,我们就称这两个集合相等. 2.教师组织引导学生思考以下问题: 判断以下元素的全体是否组成集合,并说明理由: (1)大于3小于11的偶数;

新人教版高中数学必修一全套教案

第一章集合与函数概念 §1.1集合 1.1.1集合的含义与表示(第一课时) 教学目标:1.理解集合的含义。 2.了解元素与集合的表示方法及相互关系。 3.熟记有关数集的专用符号。 4.培养学生认识事物的能力。 教学重点:集合含义 教学难点:集合含义的理解 教学方法:尝试指导法 教学过程: 引入问题 (I)提出问题 问题1:班级有20名男生,16名女生,问班级一共多少人? 问题2:某次运动会上,班级有20人参加田赛,16人参加径赛,问一共多少人参加比赛? 讨论问题:按小组讨论。 归纳总结:问题2已无法用学过的知识加以解释,这是与集合有关的问题,因此需用集合的语言加以描述(板书标题)。 复习问题 x-< 问题3:在小学和初中我们学过哪些集合?(数集,点集)(如自然数的集合,有理数的集合,不等式73的解的集合,到一个定点的距离等于定长的点的集合,到一条线段的两个端点距离相等的点的集合等等)。(II)讲授新课 1.集合含义 通过以上实例,指出: (1)含义:一般地,我们把研究对象统称为元素,把一些元素组成的总体叫做集合(简称为集)。 说明:在初中几何中,点,线,面都是原始的,不定义的概念,同样集合也是原始的,不定义的概念,只可描述,不可定义。 (2)表示方法:集合通常用大括号{ }或大写的拉丁字母A,B,C…表示,而元素用小写的拉丁字母a,b,c…表示。 问题4:由此上述例中集合的元素分别是什么? 2. 集合元素的三个特征

由以上四个问题可知,集合元素具有三个特征: (1) 确定性: 设A 是一个给定的集合,a 是某一具体的对象,则a 或者是A 的元素,或者不是A 的元素,两种情况必有一种而且只有一种成立。 如:“地球上的四大洋”(太平洋,大西洋,印度洋,北冰洋) “中国古代四大发明”(造纸,印刷,火药,指南针)可以构成集合,其元素具有确定性;而“比较大的数”,“平面点P 周围的点”一般不构成集合 元素与集合的关系:(元素与集合的关系有“属于∈”及“不属于?两种) 若a 是集合A 中的元素,则称a 属于集合A ,记作a ∈A ; 若a 不是集合A 的元素,则称a 不属于集合A ,记作a ?A 。 如A={2,4,8,16},则4∈A ,8∈A ,32?A.(请学生填充)。 (2) 互异性:即同一集合中不应重复出现同一元素。 说明:一个给定集合中的元素是指属于这个集合的互不相同的对象.因此,以后提到集合中的两个元素时,一定是指两个不同的元素. 如:方程(x-2)(x-1)2 =0的解集表示为{1,-2 },而不是{ 1,1,-2 } (3)无序性: 即集合中的元素无顺序,可以任意排列,调换. 。 3.常见数集的专用符号 (III )课堂练习 (IV )课时小结 1.集合的含义; 2.集合元素的三个特征中,确定性可用于判定某些对象是否是给定集合的元素,互异性可用于简化集合的表示,无序性可用于判定集合的关系。

沪教版高一数学教案

沪教版高一数学教案 精品文档 沪教版高一数学教案 了解集合、元素的概念,体会集合中元素的三个特征; 理解元素与集合的“属于”和“不属于”关系; 掌握常用数集及其记法; 教学重点:掌握集合的基本概念; 教学难点:元素与集合的关系; 教学过程: 一、引入课题 军训前学校通知:8月15日8点,高一年级在体育馆集合进行军训动员;试问这个通知的对象是全体的高一学生还是个别学生~ 在这里,集合是我们常用的一个词语,我们感兴趣的是问题中某些特定对象的总体,而不是个别的对象,为此,我们将学习一个新的概念——集合,即是一些研究对象的总体。 阅读课本P2-P3内容 集合的有关概念 1. 集合理论创始人康托尔称集合为一些确定的、不同的东西的全体,人们能意识到这些东西,并且能判断一个给定的东西是否属于这个总体。 2. 一般地,我们把研究对象统称为元素,一些元素组成的总体叫集合 ,也简称集。 3. 思考1:判断以下元素的全体是否组成集合,并说明理由: 大于3小于11的偶数; 我国的小河流; 非负奇数; 1 / 3 精品文档 方程x210的解; 某校2007级新生; 血压很高的人; 著名的数学家;

平面直角坐标系内所有第三象限的点全班成绩好的学生。 对学生的解答予以讨论、点评,进而讲解下面的问题。 4. 关于集合的元素的特征 确定性:设A是一个给定的集合,x是某一个具体对象,则或者是A的元素,或者不是A的元素,两种情况必有一种且只有一种成立。互异性:一个给定集合中的元素,指属于这个集合的互不相同的个体, 因此,同一集合中不应重复出现同一元素。 无序性:给定一个集合与集合里面元素的顺序无关。集合相等:构成两个集合的元素完全一样。 5. 元素与集合的关系; 如果a是集合A的元素,就说a属于A,记作:a?A 如果a不是集合A的元素,就说a不属于A,记作:aA 例如,我们A表示 “1~20以内的所有质数”组成的集合,则有3?A 4A,等等。 6(集合与元素的字母表示: 集合通常用大写的拉丁字母A,B,C表示,集合的元素用 小写的拉丁字母a,b,c,表示。 ,(常用的数集及记法: 2 / 3 精品文档 非负整数集,记作N; 正整数集,记作N*或N+; 整数集,记作Z; 有理数集,记作Q; 实数集,记作R; 例题讲解: 例1(用“?”或“”符号填空: ; ; Z; 设A为所有亚洲国家组成的集合,则中国A,美国,印度A, 英国 A。例2(已知集合P的元素为1,m,m23m3, 若3?P且-1P,求实数m的值。

高中数学人教版必修4全套教案

第1,2课时1.1.1 任意角 教学目标 (一) 知识与技能目标 理解任意角的概念(包括正角、负角、零角) 与区间角的概念. (二) 过程与能力目标 会建立直角坐标系讨论任意角,能判断象限角,会书写终边相同角的集合;掌握区间角的集合的书写. (三) 情感与态度目标 1. 提高学生的推理能力; 2.培养学生应用意识. 教学重点:任意角概念的理解;区间角的集合的书写. 教学难点:终边相同角的集合的表示;区间角的集合的书写. 教学过程 一、引入: 1.回顾角的定义 ①角的第一种定义是有公共端点的两条射线组成的图形叫做角. ②角的第二种定义是角可以看成平面内一条射线绕着端点从一个位置旋转到另一个位置所形成的图形. 二、新课: 1.角的有关概念: ①角的定义: 角可以看成平面内一条射线绕着端点从一个位置旋转到另一个位置所形成的图形. ②角的名称: ③角的分类: ④注意: ⑴在不引起混淆的情况下,“角α ”或“∠α ”可以简化成“α ”; ⑵零角的终边与始边重合,如果α是零角α =0°; ⑶角的概念经过推广后,已包括正角、负角和零角. ⑤练习:请说出角α、β、γ各是多少度? 2.象限角的概念: ①定义:若将角顶点与原点重合,角的始边与x 轴的非负半轴重合,那么 正角:按逆时针方向旋转形成的角 零角:射线没有任何旋转形成的角 始 边 终 边 顶 点 A O B 负角:按顺时针方向旋转形成的角

角的终边(端点除外)在第几象限,我们就说这个角是第几象限角. 例1.如图⑴⑵中的角分别属于第几象限角? 例2.在直角坐标系中,作出下列各角,并指出它们是第几象限的角. ⑴ 60°; ⑵ 120°; ⑶ 240°; ⑷ 300°; ⑸ 420°; ⑹ 480°; 答:分别为1、2、3、4、1、2象限角. 3.探究: 终边相同的角的表示: 所有与角α终边相同的角,连同α在内,可构成一个集合S ={β|β=α+k ·360°,k ∈Z},即任一与角α终边相同的角,都可以表示成角α与整个周角的和. 注意: ⑴ k ∈Z ⑵ α是任一角; ⑶ 终边相同的角不一定相等,但相等的角终边一定相同.终边相同的角有无限个,它们相差 360°的整数倍; ⑷ 角α + k ·720 °与角α终边相同,但不能表示与角α终边相同的所有角. 例3.在0°到360°范围内,找出与下列各角终边相等的角,并判断它们是第几象限角. ⑴-120°;⑵640 °;⑶-950°12'. 答:⑴240°,第三象限角;⑵280°,第四象限角;⑶129°48',第二象限角; 例4.写出终边在y 轴上的角的集合(用0°到360°的角表示) . 解:{α | α = 90°+ n ·180°,n ∈Z}. 例5.写出终边在x y 上的角的集合S,并把S 中适合不等式-360°≤β<720°的元素β写出来. 4.课堂小结 ①角的定义; ②角的分类: ⑵ B 1 y ⑴ O x 45° B 2 O x B 3 y 30° 60o

高中数学必修1全套教案

人教版高中数学必修1 全册教案 目录 第一章集合与函数概念 §1.1.1集合的含义与表示 §1.1.2集合间的基本关系 §1.1.3集合的基本运算 §1.2.1函数的概念 §1.2.2映射 §1.2.2函数的表示法 §1.3.1函数的单调性 §1.3.1函数的最大(小)值 §1.3.2函数的奇偶性 第二章基本初等函数(Ⅰ) §2.1.1指数(2) §2.1.1指数(3) §2.1.2指数函数及其性质(1) §2.1.2指数函数及其性质(2) §2.2.1对数与对数运算(1) §2.2.1对数与对数运算(2) §2.2.2对数函数及其性质(第一、二课时)

§2.2.2对数函数及其性质(第三课时)§2.3幂函数 §第2章小结与复习 第三章函数的应用 §3.1.2用二分法求方程的近似解 §3.2.1几类不同增长的函数模型 §3.2.2函数模型的应用实例(1) §3.2.2函数模型的应用实例(2) §3.2.2函数模型的应用实例(3)

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