必修2Unit 3 Computers Warming Up, Pre-reading and Reading 學(xué)案.doc

Unit 3 ComputersWarming Up, Pre-reading and Reading 備課人：謝艷艷 審定人：高一英語(yǔ)組 時(shí)間：2012-12-23Teaching aims1.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.Teaching difficult and important points1. Let the students learn more about history and basic knowledge of computers.2. Get the students to learn different reading skills.Teaching methods1. Task-based teaching and learning2. Cooperative learning3. Discussion Teaching procedures and ways Step1.Warming up Task1: How much do you know about computers? (Make a survey) 1. What does IT mean?2. How to speak 科學(xué)技術(shù) in English?3. What does PC mean?4. How to speak 人工智能 in English?5. What does PDA mean?6.How to speak 筆記本電腦 in English?7. What does W.W.W mean?8. What can computers be used to do in our daily life?Task2: What is it? Give some sentences to describe different kinds of calculating objects and some pictures to help the students to guess what it is? An old calculating machine used in China until now._ It is a new calculating machine which can solve a large number of mathematical problems._ It is built to solve some mathematical problems. But it is too big. _ It is a computer which can solve all kinds of problems and is used widely now ._ It is a kind of computer which can be taken conveniently(方便)._Step2.pre-reading Can you put these inventions in an order according to the time when they appeared?( ) Analytical machine（分析機(jī)）( ) Laptop( ) Calculating machine （計(jì)算機(jī)器）( ) Robotandroid( ) PC( ) Universal machine（通用機(jī)器）Step3. Reading (1) SkimmingTask1.who is the speaker ?_Task2 .Summarize the general idea of this passage. _Task3 Find out the topic sentences of each paragraph (P19.Ex2)(2) ScanningTask1. True or False1. In 1642 I began as a calculating machine and could solve any mathematical problem.2. My real father was Charles Babbage, who wrote a book and build me in 1936.3. After I got my new transistors in the 1960s, I became smaller but cleverer and quicker.4. I was brought into peoples homes in the 1970s.5. Since my birth I have been built to take the place of human race.6. Alan Turing built an Analytical Machine to solve any mathematical problems.7. People began to realize that the computer got cleverer and quicker with time passing.8. The computer began to serve the human race since it was brought into peoples homes.9. Since the 1970s, the computer was used by people around the world through the Internet. 10. The larger the computer is, the more memory it has (3)Careful- readingTask 1: Look at the timeline below. Fill in the blanks with information from the reading text.TimeThe development of the computers16421822The Analytical Machine was made by Charles Babbage.1940sThe first family of computers was connected to each other. 1970snowStep4. Conclusion of the text How did computers developcalculating machine_ Charles Babbage Alan Turing_Charles Babbage Alan TuringStep5 summaryFill in the blanks: I began as a _ _ in 1642 in France. In 1822 I was built as an _ _. Then in 1936 Alan Turing wrote a book and built a _ _.As the years have_ _, I have been made_ _ _ but I got _ _ _,_ _ _. In the 1960s they gave me a family_ _ _ _. Now people call it the Internet. I was _ _ _ _ in the 1970s.So I became PC. Since my birth I have truly been built to serve the human race.Step6 HomeworkYou are giv