1、 开州中学 高中英语组 张小英Unit3 computersPeriod 1: warming up and reading (WHO AM I?) (教案）Teaching aims 1 To talk about computers and know about the history of computers 2 Get students to think about the advantages and dis advantages of computersImportant points1 Let students know about the history of computer
2、s2 Try to improve studentsreading ability - Let students understand the relationship between main idea and supporting details.Difficulty points1 Let students know how to learn by conclusion.2 Try to improve studentsintergrating skills.ProceduresStep 1. Warming up1 Review some basic words related to
3、the topic”computer”.2 Know some scientific words .Ask students “What do you know about computers?”Guess ”who am I？“ according to the pictures.(abacus,calculator,huge computer, pc, lantop,PDA, and robot)3 Predict the content according to the time and find the key word about the passage.(the history o
4、f computers)If you want to know more about computers,open the book to P18 and read the text “Who Am I?”Step2. skimming1.who is the speaker ? a computer2. In what order is this passage arranged(安排）? in order of time.Step3. ScanningChoose the main idea of this passage.A The computer wants to find “who
5、 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.Step4.The topic sentence of each paragraph.Para 1. Over time I have been changed a lot.Para 2.Those changes only became possible as memory improved.Para 3.
6、Since 1970s many new applications have been found out for me.T:How did you find the topic sentence of each paragraph?one example: (Para3 )The supporting details of the topic sentenceWhat are the new applications of the computer?Teacher guides students to conclude:Summary:A topic sentence sets out th
7、e main idea of a paragraph. A topic sentence is usually the first or last sentence of a paragraph, sometimes it also appears in the middle of a paragraph,especially in scientific passage.Step5:What can you infer from the text? A. The computer has artificial intelligence. B. The computer changes a lo
8、t over the years.C. The computer was not connected by a network until in the early 1960s.D. Now the computer can only be used to deal with informationStrp6 Informal Discussion.(the students get into two groups ,choose a group leader who is allowed to organize their members to debate )What are advant
9、ages and disadvantages of computers?which are more?Advantages: our life has changed in school work, games, emails,music,films,communication,information ,photos ,shopping,etc.Disadvantages: 1.Bad for our eyes and health 2.A waste of time and money 3.Make people isolate from their friends 4.Some peopl
10、e especially the teenagers are addicted to the computer games and chatting on the Internet. As a result, they have little time to study . 5.Some people use the computer wrongly. We should make full use of the advantages of computers to develop. As a student we should take advantage of it to study instead of playing games or looking through bad information.Step 7 Homework1.write a passage about the advantages or disadvantages of computers.2. Read the text more and find out the difficult key words and phrases
