选修八Unit2Cloning教学设计

Unit2. CloningReading 教学设计 -雷翊Teaching contents,Doing reading comprehension about the textTeaching aims,Knowledge aims，Help the students understand the text very well.Ability aims，Improve the students reading ability. Emotional aims，1. stimulate students interest in cloning.2. Develop students spirit of cooperation and teamwork Teaching important points, how to describe cloning.Teaching difficult points,Helpthestudentsanalyzethewritingtechniquesofthearticle.Teaching methods,1. task-based teaching and learning 2. debatemethodTeaching procedures and ways,Step1: Warming up ShowsomepicturesofAstrawberryplant、Twins、cloning cattles、Identicaldogs onthescreen.Getstudentstolookatthepicturesanddiscuss: Which is natural clone? Which is man-made clone? and then explain how they differ.(设计说明：克隆技术是一门前沿科技，学生对此兴趣浓厚，利用幻灯片展示当今克隆技术产生出来的动植物照片，学生的兴趣被瞬间激发，这就为进一步的学习做好了铺垫。）Step2: Lead-inHow was Dolly the sheep cloned? What was its fate?Step3.Fast reading 1. What is the main idea of the text?The text is mainly about the_ of animal cloning and the life of Dolly the sheep, as well as the reasons why cloning is still_.2. Give the right order of the main idea of each paragraph._. Cloning has two major uses. _. What is cloning?. _. The effect of Dolly the sheep. _. It is forbidden to clone human beings._. The problems of Dolly.（设计说明：通过快读课文，让学生试着找出每段的主旨句，这样学生能更好地理解每段大意以及整个课文的大意，下一步各个阅读练习就容易多了。）Step4.Careful reading.True or false1. Electricity is needed in the procedure.2. Sheep B provides a somatic cell for the clone.3. The lamb is the exact copy of sheep A.4. Cloning means making a copy of an animal. 5. Cloning animals is as complicated as cloning plants. 6. Dolly the sheep was the first successful clone of a mammal. Choose the best answers.1. The cloning of Dolly the sheep succeeded because_. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failed.2. The lamb is the clone of the cell from sheep B because_. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep3. In the second paragraph, the word “straightforward” means _.A. uncomplicated B. honest C. frank D. difficult4. Generally, an original sheep lives _ years old. A. 9 B. 10 C. 13 D. 6.55. It can be inferred from the passage that a cloned animal _. A. usually lives as long as the original one B. usually lives longer than the original one C. usually dies earlier than the original one D. is usually as healthy as the original one6. What about the writers attitude toward cloning in this passage?A. The writer is against cloning.B. The writer is in favor of cloning.C. The writer does not state any personal opinion about cloning.D. The writer is in agreement with cloning. According to the text, fill in the blanks.DefinitionIt is a way of _ of another animal and plant.2 major uses of cloning1) to produce _quantities of plants. 2)It is valuable for research on new _and medical research on _. Cloning procedureCloning plants is_while cloning animals is very _.The first successful animal cloneThe cloning of_, a _ in cloning technology.The problems of Dolly the sheep Encouraging news : It seemed to develop _ . Disturbing news:It lived for _ and a half years, half the length of the life of the _ sheep. The effect of Dolly The sheepIts appearance raised a storm of _ and had a great impact on the _ and public_. It opened everybodys eyes to the possibility of using cloning to cure _and even to produce _.Arguments on cloningEvil leaders hope to clone _. Religious leaders raised _ questions.Many governments _ research into human cloning. Some countries continued to _evidence of the abundant medical aid.（设计说明：本节课始终围绕读，以Fast Reading, Careful Reading和Comprehening等多种方法渐进式导入学生去理解课文和解决课标阅读任务，课堂的循序渐进式阅读教学促使学生积极配合，受到了理解的学习效果。Step5. DebateIs cloning beneficial or harmful for us ?Step6.Homework1. Read the text again and mark out the useful words and expressions.2. Fin