Unit 3 Science versus Nature 教学设计 7.doc

Unit 3 Science versus Nature 教学案 7课 题Unit 3 Science versus nature课时主备人授 课 时 间教学目标Enable the students to learn different opinions on cloning. Help the students to learn how to understand scientific terms and analyze the passage according to the reading strategy. 重难点How to understand the writers point of view. How to understand the scientific terms.教 学 具A tape recorder， a projector and a computer. 预习要求workbook教师活动内容、方式学生活动内容、方式旁注Step I RevisionCheck the homework: Ask some students to share their information about cloning found on the Internet.Step II Lead-inT: Good. I think you really did a lot of work after class. Thank you very much. Today I would like to introduce a famous guy to you first. Look at the screen please.Show a picture of Frankenstein monster on the screen.Step III Pre-readingIn this procedure， students will do fast reading and answer the questions in activity A. After 2 minutes， ask students to report their answers.Suggested answer:1. The article gives both the anti- and pro-cloning point of view.2. Its name was Dolly.3. Obviously she is anti-cloning.Step IV SkimmingIn this procedure， encourage the students to develop their predictive skill by reading the beginning and the ending to guess as much as they can about the passage and understand the meaning of the text as a whole.Step V ScanningWhile scanning， the teacher should play the tape for the students. The students check their predictions and build an outline of the text in their minds.After 3 minutes， check the answers. Ask several students to tell the main idea of each paragraph.Then show the following.ParagraphMain ideaPara 1An announcement about human embryo cloning which has caused much debatePara 2Explain cloning as a wonderful scientific breakthrough and give the example of DollyPara 3Dollys creators opinion about human cloningPara 4A saleswoman supports cloning very much for her personal purpose.Para 5Some scientists are pushing ahead with the research to clone human. Para 6The achievements of China on cloning.3 minutes later， check the answer. T: Now look at activity C2， find the reasons why people are pro- or anti-cloning in the article and letters. Suggested answers:Pro-cloning Anti-cloning 1. Produce valuable tissues and organs that could be used to save human lives. 1. May produce a real-life Frankensteins monster.2. Create new tissues and organs that could be used to cure diseases like cancer.2. Could create more diseases in the animal world.3. Its a wonderful scientific breakthrough3. Its immoral and shows no respect for human life.4. Those who cannot have baby can have a cloned baby. 4. Could one day end up replacing human beings?5. The human race is using up Earths resources.T: Now Im sure you have got an idea of the terms you dont understand at first, havent you？ Now lets do activity D. Step V