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高中英语 Unit 1 Great scientists Listening Speaking and Writing教案 新人教版必修5

Unit 1 Great Scientists
Listening, Speaking and Writing Teaching Aims: Improve the students’ listening skills. Improve the students’ speaking skills. Difficult and Important Points: 1)Listening 2)Help Ss overcome the difficulties in listening material. Teaching Methods: Class activities to help motivate the Ss’ interest of learning English. Teaching Procedures: Step I Warming up 1.Which plant and a nimal do you like best? Can you classify them into a system ? 2.Background: Carl Linnaeus (1707-1778) Swedish Carl Linnaeus is often called the Father of Taxonomy( 分 类 学 ).He succeeded in classifying the plants and animals into a system that worked. His method was called “the sexual method” of classifying plants and animals. His system for naming, ranking, and classifying organisms is still in wide use today (with many changes). His ideas on classification have influenced generations of bio logists during and after his own lifetime. Step II. Listening P41 1.Choose which of the following statements most closely describes what this listening passage is about . Explain why the others are wrong. A. This is about a man who wants to name a flower. B. This is about a man who finds a flower and wants to own it. C. This is about a man who finds a flower and wants to know if it is a new species of flower. 2. List en to the tape again and try to complete the following passage. To find the name of the unknown flower, first you have to go to see a flower ________. He /She will look in a special ________ written by Carl Linnaeus. He lived in ________ __ from ________to __________. He was very important because he solved a serious problem for _________ . He saw all plants and animals produce _________________________. Some animals produce __________ but others lay ___ ____ while plants ______________. He used these different ways of producing young to put plants and animals into _________. For example, the group called birds lay ________ to produce young and they all have ________. Linnaeus put the plants and animals into smaller groups or species. He gave each one two names. One is for the large group, for example _______ and one is for the species, for example _________. So a parrot would be ___________. He was the first person to successfully classify(分类)all plants and animals. Step III. Talking P41 Imagine you are going to meet a specialist about a newly-found flower. Your partner will be the assistant for the flower specialist. You both need a description

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of the other so you can recognize each other when you meet. Now ring the assistant to sort out the necessary information. Pair work (Making a telephone call) How will I recognize you? What special features do you have? What will you wear? How will I know you? What do you look like? You can reco gnize me because… I’m tall/short, fat/thin, young/old with… My…looks a bit like… I have large /small ,brown/green eyes with… Step IV. Play a game: Can you guess w ho he/she is? One acts as an assistant, the other acts as the third person who wants to introduce a visitor (in the class) to the assistant. The whole class guess who the visitor is. Step V. Persuasive writing (Please refer to P8 Learning Tip) Writing Task: P7.3.Now writing a short letter asking Copernicus to publish his ideas so everyone can read them. First you need to collect your ideas. For example: ?He believes his new theory is true. ?There are problems with the present theory. ?He has done many years of observations to prove his new theory is true. ?Science can’t develop unless people publish their ideas. ?Time will show if his theory is true or not. Here is a plan: Beginnin g: Tell Copernicus who you are and why yo u want him to publish his ideas. Paragraph 1: Reason 1 and evidence. Paragraph 2: Reason 2 and evidence. Summing up: Ask him to think again about publishing his ideas. One possible version: Dear Nicolaus Copernicus, I am a student studying astronomy and I would very much like to read your new theory about the solar system. I hope you will publish it for several reasons. I understand the problems with the present theory. The way the planets move is not what you would expect if the earth was the centre of the universe. It is also odd that the brightness of some stars seems to change. So I agree with you that we need a new theory. I know your observations have been very carefully carried out over many years. Now you must have the courage to publish them. Science can never advance unless people have the courage of their beliefs. I know you worry about what will happen if you publish your new theory. No matter how people oppose it, time will show if your ideas are right or wrong. So I hope you will feel you can publish your new theory.

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Yours sincerely, Zhang Hua Step VI. Summary Step VII. Homework assignment

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