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视频标签：Cloning
所属栏目：高中英语优质课视频
视频课题：人教版高中英语选修八选修8 Unit 2 Cloning Reading –山西省优课
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人教版高中英语选修八选修8 Unit 2 Cloning Reading –山西省优课
教学目标
Ability aims:
1. Develop the reading ability
2. Can talk about cloning
Emotional aims:
1. Know something about cloning.
2. Develop the sense of cooperative learning
3. Get to know the attitudes towards cloning.
2学情分析
高二普通班的学生,对于社科类的文章,在词汇和理解上有一定的困难,所以要先从词汇入手,帮助学生了解克隆的技术的相关术语,然后在阅读中了解克隆的过程以及克隆技术给人类带来的好处,在语言输出上,适当地提供一些引导的语言,帮助他们完成语言的应用。
3重点难点
1. Let students learn more about cloning.
2. Get students to learn different reading skills,especially the reading ability of understanding implied meaning of the author’s.
4教学过程
4.1第一学时
4.1.1新设计
Step1. Preparing lessons &self-study and exploring the problems(探究问题,引出话题)
Warming up
Talk about the following questions:
1.What is cloning?
2.Cloning can be used in many aspects, do you think cloning is good or bad for human being?
[设计理念]
Get the Students to look through Warming-up and think about the two questions. One of the question can be found in the reading text, but another question “Is cloning good or bad ” that is still a question. So in reading,everybody should think about this question.After reading, Ss should try their best to find their answers.(The aim is to direct the students to know the topic and to gain the useful information about clone .
Step2.Finishing plan & improving skills(完成学案,提高技能)
Task1. Skimming
1. Cloning is a way of making an_____ _____ of another animal and plant.
2. Cloning has ______ ______ uses.
3. Cloning is used by gardeners to produce commercial quantities of ____.
4. Cloning is valuable for research on new plant species and for ____ on animals.
[设计理念]
Get the students to skim the passage---- CLONING: WHERE IS IT LEADING US? And do the above exercise .The task of skimming aims to help Ss get the actual information in their reading.Get students improve their reading ability of skimming in the limited time in particular.
Task2. Scanning
Read the short passages, choose the best one from A,B,C and D for each exercise in the following.
1. Dolly the sheep_____.
A. looked exactly like the sheep that provides the egg.
B. was the exact copy of the sheep that provides the nucleus.
C. looked like the sheep that gave birth to it.
D. had the characteristics of all three sheep.
2. 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 one
3. Which of the following is not an advantage of cloning?
A.Cloning can be used for medical purposes.
B.Large quantities of food can be produced by cloning.
C.Cloning can help keep animals from becoming extinct.
D.Famous persons who have passed away can be cloned.
4. We can use the skill of cloning to __________.
A. bring about global peace B. create other famous scientists
C. improve the development of learning language D. cure some special diseases
5. What are people cloning now ? __________
A. They are cloning trees, crops as well as animals B. They are cloning books and machines
C. They are cloning humans and animals D. They are cloning plants and science
[设计理念]
Get the students to scan the passage---- CLONING: WHERE IS IT LEADING US? and do the comprehensive exercises.
(The aim of this part is mainly to improve the students’ reading skills.)
Task3. The following statements are about cloning. Read them and decide if they are true or false.
1.Gardeners can make a lot of money by cloning plants. ( )
2.Cloning animals is as complicated as cloning plants. ( )
3.Dolly the sheep was the first successful clone of a mammal. ( )
4.Natural clones happen in animals as well as in plants. ( )
[设计理念]
Get the students to read the passage carefully, finding the useful information in the reading text. Then,do the exercise True of False according to the text. If the statement is wrong, you should give your reason and correct the sentence.
Task4. Explain the procedure of cloning.
This procedure aims to give the students an opportunity to show what they have learnt .
[设计理念]
This step needs students to express themselves after they finished the reading and comprehending. It also will help the Ss to state something freely. This step is very important to everybody.
Step3.Researching cooperatively& answering questions(合作探究, 解决问题)
Discuss the following questions with your classmates and change your ideas with others.After your discussion, finish the task “Interview”. In each group,several students should be the “journalists”,and each group must have at least one “interviewee” as the scientist who cloned Dolly the sheep.Prepare your interview,then give a good understanding of what you have learnt.When necessary, you can turn to teacher.
(1). Do you think successful clone is easy to achieve?
(2). How many kinds of animals have been cloned besides Dolly the sheep?
(3). Do you support the idea of producing human embryos for medical purposes?
(4). What benefits can humans gain from cloning?
(5). What problems may arise when humans are cloned?
(6). Could people clone a pet that has died?
(7). Do you think it is possible to clone humans?
(8). Should we clone human?
(9). What are the attitudes of different governments towards human cloning?(What about China?)
(10).Can you say something about the future of cloning?
[设计理念]
The presentation is mainly about some dialogues, Ss can work in groups to discuss the above questions and try their best to find the answers to these questions. In this group work, students can change their ideas with others. Finally, in group work , students can make up dialogues to show their roles play. This is the consolidation of this class.
Step4 Summary&Homework(总结复习,升华主题)
1.Sum up the advantages and the disadvantages of cloning.
2.Then write a composition about this topic.
[设计理念]
It is the step of summary. After this class, do the summary of this class, especially sum up the advantages and the disadvantages of cloning, then write a composition about this topic.This step will strengthen the reading and show the ability of students.
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