必修2Unit3Computers全单元教案

Unit 3 Computers

Period 1: Listening & Speaking

GOALS:

1. To practise listening comprehension.

2.To practise making decisions and reasoning

TEACHING PROCEDURES:

Step1. revision

1. check the homework exercises.

1). It has been reported that children will be offered free education．

It has been reported that free education will be offered to children．

2). It has been said that we will be offered the latest computer science course book．

It has been planned that the latest computer science course book will be offered to us．

3). I have been told by Peter that I will be lent his notebook computer for a week．

I have been told by Peter that his notebook computer will be lent to me for a week．

2. Question: What can computers be used as?

Step2. Lead-in

As 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 advantages．Let’s check the answers together.

3. 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 opi nion, ….

I believe that….

I agree because….

I disagree because….

I’ve 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. Speaking

1. Pre-speaking

Say: From what we have learn, we should admit that computers and the web have a great influence on the school education as well as people’s life. It has come into people’s everyday life and many families hold computers in their homes. Now there is a task for you.

2. While-speaking

1) 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 i nput: Useful expression_r_rs (Repeat it to strengthen students’ ability of use it.)

(Pair work )Use the expression_r_rs to support your opinion or challenging other’s 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 that…

3. Post-speaking

Conclusion—What 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. Homework

Page 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 & Writing

Goals:

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-in

Show 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 passage’s 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 blanks

The 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 I’m all about.

after all 毕竟

with the help of sb./sth. 在…的帮助之下= with one’s/ sth’s help

Step3 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: Let’s 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…What’s your reason?

In my opinion…I have decided that…

Sample:

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 doesn’t 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-writing

Say: Imagine what problems and delights this android might have to deal with while it is serving you. Try yourself in someone else’s shoes is an important way of understanding how other pe ople 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 Writing

Say: 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 paren ts’ 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 Yan．I am a 321 model android．I work for the Li family. Mr and Mrs Li work very hard too．Mr Li is an architect and designs great tall apartment blocks．Mrs Li is a doctor and has to look after many patients．I 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 brain．Of course my brain is as large as a mountain, so work like that is no trouble to me．I really eat books just like people eat food．

The 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 him．He 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 friends．Sometimes 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 days．The 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 themselves．I am always introduced to their friends and play with visiting children．I am the perfect family academic aid and, although I was not cheap to buy, Mr Li says I was worth every yuan!

Step6 Assessment

Get 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: Homework

Write about your discussion. You may begin like this:

Hello, everyone. My name is ___. I’m 321 model android. I work for the Li family….

Period 3: learning about Language

---the Present Perfect Passive Voice

Goals: 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-in

1. Check the homework first

Ex1:

1 totally

2 revolution

3 artificial intelligence

4 birth

5 simple-minded

6 go by

7 deal with 8 network 9 truly 10 anyway

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