Learning about Language教案教学设计

Unit 3 Computers I Background Information Date: 2017/11/30 Time: 10:40-11:20 Room: 301 Students: 70, intermediate, Middle School(Junior) Class: 1, Grade 2, Senior Lesson Type: Reading

Teaching method: Task-based model of teaching

Teaching equipment: computer, projector, pictures, tape recorder Teaching material: English book for SE, compulsory 2, PEP II Teaching Objectives 1.

Instructional objectives

By the end of the class, students should be able to :

1.

describe the development of computers . 2.

express their ideas and give supporting details. 3.

learn to use the method of reading: predicting, skimming and scanning

4.

use time sequence to describe one thing 2.Educational objectives By the end of the class, students should be able to : 1.

know the development of computers

2.

know that computers both do good and harm to human. III Focal and difficult points

Focal & difficult point: express their ideas and give supporting details. IV Teaching procedures Stage I get ready for learning

Step 1:greeting 1’

Instruction:OK, class begins, good morning, boys and girls. Stage II Pre-reading 4’

Step 1:lead in the topic using a picture (a stick figure of computer) Instruction: Today we are going to learn Unit3 “Computers”. Firstly, let’s look at the screen, do you know what it is? Yes, it’s a computer, the first electronic computer, ENINC. ENIAC was the first electronic general-purpose computer. and capable of It being was Turing-complete, digital, reprogrammed to solve "a large class of numerical problems."In other words, it means the computer had unlimited potential to store information and solve numerical problems rapidly. Step 2: question and discussion What do people usually use computer for? (simplify difficult sums, watch films, search for information , send emails, store information, communicate with others)

Instruction: With the development of technology, nowadays the computers are wildly used both in offices and homes. Can you just think about this question “What do people usually use computer for?” OK,just put up your hands and share your ideas with us. Any volunteers? OK, Linda, please. Good, thank you. Just now, Linda mentioned a lot. In our daily life, computer are usually used to do such things, like simplify difficult sums, watch films, search for information , send emails, store information, communicate with others and so on. I know that most of you are familiar with using computers, I wonder whether you’ve thought about these questions before. Question 1: What was the computer used to do at the very beginning? Question 2: How does the computer develop? Question 3: What does the future computer look like? Question 4: What would the future life be if there's no computer? It doesn’t matter if you never thought about these questions. You will get a main clue about the development of computers after you read this passage.

Stage III While-reading Step1: predict 1’

Activity: look at the picture on page 18, guess what the passage about and find out what “I” refers to. Instruction: OK, now please turn to page 18, the reading part, Who am I? Look at the picture above and predict what “I” in the title refers to. Yes, here, “I” refers to computer.

Step 2:Listen to the tape3’

Activity: listen to the tape and put the inventions in order Instruction: OK, now close your book and listen to the tape ,at the meanwhile, put the inventions in order, you have 4 minutes. Here we go! OK, do you finish? Let’s check the answer together. The first one is calculating machine , the second one is analytical machine, the third one is universal machine, the forth one is PC, the fifth one is laptop, the last one is robot. Step3:scanning the whole passage 10’

Activity: read the passage and finish the time line Instruction: Now read the passage and finish the time line, you have 4 minutes. Here we go. OK, time is up, let’s check the answers together.

T:OK, what happened in 1642?

S:... T:Yes, in 1642, the computer began as a calculating machine. Which year is mentioned in the passage between 1822 and

1940s.

S: 1936 T:Yes, it was 1936, in this year the analytical machine was made by Alan Turing. What happened in 1940s? S:... T: Good! In 1940s, the computer has grown as large as a room. T: In which year the first family of computers was connected to each other? S:1960s. T:Yes, in 1960s, the first family of computers was connected to each other. T: How about 1970s? S:... T: Yes, in 1970s, computers were used in offices and homes. And now computers connect people all over the world.

Step 4:scanning the whole passage 8’

Activity: read the passage again and finish the chart Instruction: Read the passage again and finish the chart. In this part, you are required to find the topic sentence of each paragraph and give supporting details. Let us do the finish one together. T: OK, which sentence is the topic sentence of paragraph one?

S: The first sentence. T:Yes. The topic sentence is the first sentence, Over time I have been changed a lot. How does the author support this topic? The following description gives the supporting details.

Such as the calculation machine, the analytical machine, and then the universal machine. Is it clear? OK, it is your turn to find the topic sentence of para.2 and para.3. At the meanwhile, find the supporting details, and words and phrases are OK. You have 4 minutes. Here we go! T: Ivy, in your opinion, which sentence is the topic sentence of para2. And Which words and phrase can be used as the supporting details. S:... T:Yes, the topic sentence is the first sentence. These changes only became possible as my memory improved. And the word like these are as the supporting details. (tubes,transistors, chips,network,world wide Web) T: Ben, which sentence is the topic sentence of para2? And why do you think so? S: The first sentence. And the author mentioned a key words in the firs sentence, application. And in the following, he put up some aspects, such as communication, finance, and trade. T: Well done. The topic sentence is the first sentence. Since the 1970s many new applications have been found for me. And such the words like these are as the supporting details.(communication ,finance, mobile phones,medical

operations,space rockets)

Step 5: debate 12’

Activity: Is living without computers possible or impossible? Instruction: Since the appearance of computers, it has changed our lives a lot. If we could not use computers any more. What would we have to do? Is it possible to live without computers? Discuss with your desk mate and then clarify your opinions. You have 5minutes, after that, I will some of you to share with us. Is it clear? OK, here we go. T: Time is up. Any volunteers? Put up your hands. OK, lily please. S:... T：Well done. How about you Lucy? S:...

T:

What you two said is reasonable, and in my opinion, whether there is a computer or not, our human also can manage to live a good life. Because we are creative and imaginative. Step 6: retell 5’

Activity: describe the development of computers Instruction:

After reading the passage several times. I believe that you are familiar with the development of the computer. OK, now use your own words to retell the passage. The following words and phrases are given to help you describe the development of computers. You can begin like this:

Over time I have been changed a lot. I began as a calculating machine in France in 1642... 2 minutes to prepare and then I will ask two of you to do the retelling. Here we go.

OK, time is up, any volunteers? OK, Linda please. Thank you , you have done a good job. Jubin, how about you?

S: I am sorry. I can’t remember the passage. T: It doesn’t matter. Just try your best, say as much as possible, we will help you.

S:... T:Jubin, well done. But you have to pay more attention on the passage later, and I will check your retelling next class. Just be ready. OK? Let’s move on. Given words:Calculating machine , Analytical machine, PC , Laptop

Universal machine, Network , Word Wide Web, Communication , Finance, Robot, Mobile phones, Medical operations , Space rockets, Providing a life of high quality

Step 7: homework

Activity: Write an article in the name of “The Future Computer”

Instruction: During this period, you guys performed well, but you should remember that just try to express yourself as much as possible in English. After finish the reading part, I believe that most of you are familiar with the development of computers. What does the future computer look like? I know all of you here are imaginative, and just think about this question, write an article in the name of “The Future Computer. You are required to hand the paper next class. Are you clear? OK, so much for today, see you next class.