求人教版高一英语必修2第三单元computer词汇教案

Teaching aims:
1. Topic
Information technology; history and basic knowledge of computers; robots
2. Useful words and expressions:
Calculate calculator PC notebook common analytical simple simple-minded technology technological revolution universal mathematical artificial intelligence anyway totally network truly race birth IT advantage disadvantage type disagree choice material personally create coach move arise brain mop wander
In common in one’s opinion go by so …that…
deal with human race in a way make up after all
with the help of watch over
3. Functional items:
a)Making decisions
I think that…
In my opinion…
I believe that…
Let’s make our decision.
I’ve decided that…
b)Reasoning
The advantage/disadvantage is…
I think this one is better because….
I don’t think this one because….
What’s your reason?
Why do you think so?

4. Structures
The present perfect passive voice
I have been made smaller and smaller.
I have been used by millions of people.
I have truly been built to help the human race.

Teaching procedures

Period 1. Speaking
Step 1. Warming up
1. Ss talk about the pictures on page 17 with the teacher’s help.
An abacus is an old calculating machine used in China until now.
A huge computer is built to solve some mathematical problems. But it is too big.
A calculator is a new calculating machine which can solve a large number of mathematical problems.
A PC is a personal computer which can solve all kinds of problems and is used widely now.
A notebook computer is a kind of useful computer which can be taken conveniently like a notebook.
2. Now let’s discuss what they have in common in small groups. Remember to use some of the following expressions.
I think that…
In my opinion…
I believe that…
What’s your reason?
Why do you think so?

Step 2. Listening (page 55)
Ss are asked to read fast the requirement of Ex. 1 and 2 to fink out the listening points first. Then listen to the tape twice to complete Ex.

Step 3. Talking (page 56)
Imagine that your family is thinking of buying a robot. You can afford these three robots mentioned in the listening text. Please discuss which one is the best for you. Remember to discuss the advantages and disadvantages of each one. Them make your choice and give reasons.
Using the following expressions in discussion:
I believe that….
I think this one is better because…
Let’s make our decision…
In my opinion…
I’ve decided…
I don’t like this one because..

Period 2. Listening

Step 1. Revision
Ss talk about something about computers or robots.

Step 2. Listening and writing (page 21)
Ask the Ss to read through the directions and look at some pictures below and a form above on page 22. make sure they know what to do while listening.
Task1. Listen to a conversation about different kinds of information technology of IT.
Task 2. Discussion and filling
Ss discuss the advantages and disadvantages of each one in small groups and fill in the following form.
Type of IT Advantages Disadvantages
TV
Web
Radio
Book

Step 3. Listening task (page 58)
1. Ss will be asked to look at the picture and the form quickly to find out the important points.
2. Play the tape twice and ask the Ss to fill in the form.
Sally and Brenda’s problems
About their jobs
About changing their jobs
About who decides their future
About how they are different from people
About how they are the same as people

Homework
Ss discuss the use of computer chips in their spare time.

Period 3. Reading
Step 1. Pre-reading
Ss in groups discuss the following questions:
1. What do you know about computers?
2. How have computers changed our lives?

Step 3. Reading
1. Ss read the passage and get the general idea.
(The text is mainly about the history and development of computers. And it is also about the relationship of computers and humans.)
2. Ss read the passage and finish the timeline on page 19.
Suggested answer:
1642: 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 become 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.

Step 4. After-reading
1. Ss discuss:
What changes have computers and the internet brought to schools?
What changes will they bring to schools in the future?
2. Debating
Topic:
Surfing the internet more is good for young students.
Surfing the internet more is bad for young students.

Homework
1. Recite the key sentences in the text.
2. Prepare for learning about language.

Period 4. (Language learning and grammar)
Step 1. Revision
Ss try to retell the text, using their own words.

Step 2. Language points
1. in common
have nothing in common
have little in common
have something in common
have a lot in common
2. simple-minded
absent-minded
open-minded
narrow-minded
single-minded
strong-minded
weak-minded
3. make a decision
4. in a way
5. after all
6. watch over
7. wander

Step 3 Discovering useful words and expressions
1. Ss read the text and finish exercise 1 on page 19.
2. Ss read the passage on page 20, part 2 and try to complete it with appropriate words.
3. Ss look at the sentences in exercises 3 on page 20, and tick the right word.

Step 4. Grammar: The present perfect passive voice
Show the Ss the following sentences, and then change them into passive voice.
1. We have made a plan.
2. He has fixed the computer.

Step 5. Practice (discovering useful structures)
Ss finish part 2 on page 20.

Homework
1. Review what they have learnt about the present perfect passive voice.
2. Finish Wb exercises 1 and 2 on page 56 and 57.
3. Finish using structures, exercise 1 on page 57.

Period 5. Extensive Reading
Step 1. Revision
Check Ss’ homework.

Step 2. Reading (P22)
1. Ss read the passage and discuss how to design their own android.
2. Ss answer 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?

3. Ss read and finish True of False questions.
4. Check the answers.

Step 3. Reading (page 58)
1. Ss read the passage on page 58 quickly.
2. Ss fill in the form of Ex.1 and keep a record of his performances.

Step 4. Speaking
1. Imagine you have been lucky enough to be allowed to interview Hua Fei in hospital for your school newspaper. Work out some questions.
2. Ss play roles in pairs. One of you will interview Hua Fei. The other will imagine he/she is Hua Fei. Then change roles. Finally, take notes of your partner’s answers to the questions.

Homework
Prepare your writing for the newspaper.

Period 6. Writing

Step 1. Speaking and writing (page 22)
1. T: 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. There is a list of things your computer could have on page 22.
A fast PC the monitor is smaller
Improved disc storage used recycled materials
Internet a flat screen
2. Ss talk about the special things each computer can do and write a report.
3. Ss read their report in class.

Step 2. Writing (page 23)
1. T: 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 tko 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”?
2. Ss write their passage with the beginning on page 23.

Step 3. Writing task (page 60)
Ss try to finish the writing task on page 60 if time permits.

Homework
Finish the project on page 60.

Period seven

Teachers can use this period freely.
Suggestion: Teachers can use this period to let Ss sum up what they have learned and explain what Ss couldn’t understand very well in this unit. Teachers can also add more practice in this period to consolidate what the Ss have learned. Finally, ask the Ss to finish checking yourself. It is very important to improve their learning