必修二Unit-3-Computers-reading公开课教案.doc

Unit 3 Computers

Period 1 Reading
I.Teaching aims
1. Knowledge aims
(1) Get the students to learn the useful and expressions in this part.
(2) Let students to learn about history and basic knowledge of computers.
2. Ability aim
Develop students' reading abilities and let them learn different reading skills.
3. Emotional aim
Arouse students' great interest in learning computers and let them learn to use the computers in their daily lives.
II.Teaching difficult and important points
1. Let the students learn more about history and basic knowledge of computers.
2. Get the students to learn different reading skills.
III.Teaching methods
1. Task-based teaching and learning
2. Cooperative learning
3. Discussion
IV. Teaching procedures
Step1.Lead-in and warming up
Show the students some pictures of Steve Jobs and let them guess who he is. After showing the third picture, they may get the right answer. Then let them focus on the tablet in his hands and ask them what kind of computers it is.
Then show them a short video about the history of Apple’s computers and ask them how many different kinds of computers they can see.
At last, show them some kinds of computers.
T: Do you want to know more about computers?
Step2.Skimming
Read the whole passage as fast as you can. Try to get the main idea of this passage.
A. The computer wants to find “who he is”.
B. The function (功能) of the computer.
C. The computer becomes popular around the world.
D. The history and the applications of the computer.
Find out the topic sentence of each paragraph and underline them.
Step3. Careful-reading Para 1
Scanning
Let the students read this paragraph carefully and try to finish the following char.

T: How could these changes become possible?
Step4. Careful-reading Para 2
Let the students read paragraph 2 quickly and find the answer to this question. After check the answer, give them one minute to find the five different ways of memory for computers in different periods of time.
Step5. Careful-reading Para 3
Since the memory of computers has been improved greatly, will them become more powerful and can be used in more fields?
Now read the last paragraph and find out the new applications of computers.
Step6. Further Reading
1. The passage is written by_______ order?
2. What is the most used rhetoric (修辞法) in this passage?
A. simile（明喻）
B. personification (拟人)
C. metaphor (暗喻)
3. In what ways have computer been changed?
Ask some students to summarize. If they have any difficulty, give them some hints.
Step7. Activity: Be the next Jobs!
We have learned the history of computers and seen the great development of computers. What will the computers be like in the future? Do you want to design your computers as Jobs did? Now try to design your computers.
For example:
This is the new computer designed by our company.
It is very small and transparent(透明的). You can even put it into your pocket. (Shape/color)
It has a free-internet in it. You can… (Applications/functions)
It only costs you … (Price)
Give the students five minutes to prepare and invite some of them to show their ideas.
Step8. Homework
1. Try to retell the history of computers.
2. Read the passage carefully and underline the difficult sentences.