Unit 3 ComputerPeriod 1. Warming-up & Intensive Reading教学设计Teaching goals:1. To have a better understanding of the main idea of the passage.2. To enable the students to talk about computers and robots in English and express or support an opinion with suitable expressions3.To enable the students to grasp the progress of computers4. To enable the students to talk about computers and robots in EnglishTeaching aids:Computer, recorder and projectorTeaching procedures:Step 1. Lead-in(Word puzzle )T: The technology develops so quickly that many new things appear in human beings life.Lets guess what they are:(show the picture on the screen and get Ss to say out the answers, learn the new words at the same time )n An old calculating machine used in China until now. (An abacus)n It is built to solve some mathematical problems. But it is too big.(A huge computer)n It is a new calculating machine which can solve a large number of mathematical problems.(A calculator)n It is a personal computer which can solve all kinds of problems and is used widely now. (A PC / personal computer)T: If I am a math teacher, which can help me most?(Ask students to give their opinions, remind them of using the expressions of giving opinions)Ask students to discuss what the items just shown have in common, and then rank them according to the time of their appearance.Ask some of the students to talk about what they know about computers.Ask students to discuss “How have computers changed our life?”, and then have some of them give their answers, using the expressions of giving opinions.Step 2 Pre-readingT: Have the computer and Internet become part of your life?n How have computer changed our lives? (What can you use them to do? )Ss: I use the computer or Internet to:type my homework /draw pictures/ play games communicate with my friends./ gather related information for my lesson s/ buy the things I like, / listen to music /watch moviesT: What else do you think the computer and Internet will help you to do ? Deal with Ex 3 of Pre-reading on Page 17Step 3 SkimmingGive students only 1 minute, then ask them to get the main idea of the passageThe main idea of the passage: This is a short _ of the _ of computers.Who am I ? ( A computer )(shown on the screen)Step 4ScanningGive students 2 minutes, and ask them to scan answers to the following questions:(Before students read the passage, tell them that attention should be paid to the hints of the time.) (Questions are shown on the screen)Question (1) What is the main idea of the passage?Students are asked to find out three sentences to support who the speaker is in the story.1)Then in 1822 I was built . (Itself was the first design of a computer)2)My real father was Alan Turing.(He designed the first real computer.)3)However, people thought I was simple-minded until., (It has artificial intelligence.)Question (2) What happened to computers in 1642？Question (3) What happened to computers in 1936?Question (4) What happened to computers in 1970s?Step 5 Detail ReadingI Give students 5 minutes to read the passage carefully, and answer the following questions:Question (1) Who was the first person to describe how the computer was made to work?Question (2) What did he make and what did it do?Question (3) Who was the next important person to design computers?II True or False1. In 1642 I began as a calculating machine and could solve any mathematical problem. F2. My real father was Charles Babbage, who wrote a book and build me in 1936. F3. After I got my new transistors in the 1960s, I became smaller but cleverer and quicker. T4. I was brought into peoples homes in the 1970s. T5. Since my birth I have been built to take the place of human race. FIIIComprehendingAsk students:” How is the passage organized?”(If the students can not answer the question, draw their attention to the appearance of different years.)Fill the tableA chain of events showing the development of computer / Changes of the machineTimeline1642: _: the Analytical Machine was Madeby Charles Babbage.1936: _1960s: _: the first family of computers was connected to each other.1970s: _Now: _Explain how the computer technology has been developing and complete the following chart. Then give a brief oral presentation on the development of computer technology with the help of the chart.Step 6 Summing-up and enjoyingI.Ask students to finish the form shown on the careen(the same as on p.19) while playing the voice of th