人教版选修六Unit4Globalwarming教案.pdf

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1、Unit 4 Global warmingI.单元教学目标技能目标Skill GoalsA Talk about global warming,pollution and the importance of protecting the earthA Practise expressing agreement,disagreement,blame and complaintA How to use it for emphasis in a sentenceA Write an essay on environmental problemsI I.目标语言功能句式Expressing agree

2、ment,disagreement,blame and complaintYes,I agree with you.Yes,I think so.I believe that youve got it right.I dont think so.I dont think thats right.Im afraid you are wrong.Im sorry to bring this up,but.Im sorry to have to say this,but.They shouldnt have done it.They are to blame.Why dont you do some

3、thing about it?Perhaps they should/ought to do.词汇1.四会词汇compare,graph,phenomenon,fuel,quantity,per,data,catastrophe,climate,consequence,state,range,glance,widespread,decrease,steady,steadily,average,existence,outer,electrical,motor,can(n.),microwave,nuclear,disagreement,title2.认读词汇renewable,greenhous

4、e,Fahrenheit,Sophie,Armstrong,Janice,Foster,methane,Charles Keeling,measurement,Celsius,famine,destruction,m.教材分析与教材重组George Hambley,speculation,environmental,hectare,emphasis,individual,appliance,heading,imperative3.词组compare to,come about,quantities of,result in,build up,keep on,on thewhole,make a

5、 difference,put up with,so long as,and so on4.重点词汇data,quantity,catastrophe,climate,consequence,compare,per,range,glance,average,existence语法It used for emphasisIt is human activity that has caused this global warming.重点句子1.There is no doubt that the earth is becoming warmer.P262.Without the greenhou

6、se effect,the earth would be about thirty-threedegrees Celsius cooler than it is.P263.They also agree that it is the burning of more and more fossil fuels thathas resulted in this increase in carbon dioxide.P264.Together,individuals can make a difference.P305.It takes a lot of energy to make things

7、from new materials.P306.Remember your contribution counts.P30i.教材分析本单元以Global warming为主线，旨在通过单元教学使学生经过思考、学习，认识到全球变暖的起因和它所带来的种种后果。同时鼓励学生进一步阐述地球所面临的其它严重问题，激发学生的环保意识。引导学生运用所学语言、句式表达自己对这些现象的看法，培养他们为自己的观点辩论的能力，并能运用所学知识写一篇有关环境问题的论文。1.1 Warming U p通过直观的图片，使学生对能源的用途和种类有一个基本的了解。让学生对当今人们开发和使用能源以及随之而来的种种影响有更深一

8、步的思考和认识，从而为本单元主题Global warming作了很好的铺垫。1.2 Pre-reading是Reading的热身活动。通过组织学生对这些问题的讨论、回答,激活他们头脑中相关的内容模式，为下一步阅读做好准备。由于Global warming是当今世界的一个热门话题，学生已从多种渠道对此有了很多的了解，因此教师可以在安排预习作业时让学生分组做a project on global warming,这样既符合了新课程的要求一一体现学生的主体地位，激发学生自主学习的热情，又能得到很好的教学效果。1.3 Reading是一篇从杂志节选的文章。它讲述了全球加速变暖的原因一一人为温室效应，后

9、果以及人们对此的不同观点。要求学生在理解文章大意的同时注意它的写作技巧：提出问题一一分析现象一一阐述各方面的不同观点一一以疑问句作为总结引发读者深思，自行做出判断。这 为Comprehending中Exercise 3的分组辩论活动留出了很大的空间，埋下了很好的伏笔。1.4 Comprehending包含了三大部分。前两个部分中设计了诸多细节性的问题，旨在检测学生定位、理解细节及对文章大意的总结归纳的能力。最后一项要求学生在读完整篇文章后，仔细思考并树立自己的观点：“We should do nothing aboutglobal warmingn 还 是“We should do somet

10、hing to decrease the speed of globalwarming”，并利用所学知识进行分组辩论。此项活动旨在激发学生的学习热情并体现学生在课堂中的主体位置。1.5 Learning about Language分词汇和语法两部分。词汇部分设计了两项练习，一项是具有一定情境的10个句子，引导学生加深对新词汇的理解和记忆。语法部分主要是通过练习加强学生对强调句式的掌握并能真正体会强调句的作用。1.6 Using Language部分设计了包括听、读、写的活动。Reading and writing是Reading的一个延伸。通过读者和杂志社之间的两封信件，学生可以更多地了解如

11、何控制全球变暖。同时通过课后练习可以让学生更多地联系自己的生活习惯，树立从自身做起倡导环保的观念。其中课后练习make a poster更是激发了学生自主学习的兴趣，而且很有实用性一一可将所做的环保内容的海报贴在校园或社区中，将课堂的抽象知识变为了社会实践，实现了真正意义上的学以致用。Listening and speaking部分是关于能源使用的一篇电台采访。要求学生在理解大意和主要细节的基础上回答听力练习中的几大问题，提高学生的听力水平。2.教材重组2.1 将Warming Up与Listening and speaking整合在一起，设计为一节听说课。2.2 将 Pre-reading,

12、Reading和 Comprehending整合在一起，设计为一节阅读课。2.3 将 Using Language 中的 Reading and writing 设计为一节泛读课。2.4 将 Learning about Language 与 Workbook 中的 USING WORDS ANDEXPRESSIONS fl USING STRUCTURES整合在一起，设计为一节语言学习课。2.5 将 Workbook 中的 LISTENING,TALKING,LISTENING TASK 和SPEAKING TASK整合在一起，上一节听、说练习课。2.6 将 Workbook 中的 READ

13、ING TASK 和 WRITING TASK 整合在一起，设计为一节写作课。3.课型设计与课时分配1st Period Speaking and Listening2nd Period Reading3rd Period Extensive Reading4th Period Language Study5th Period Drills6th Period WritingIV.分课时教案The First Period Speaking and ListeningTeaching goals 教学目标1.Target language 目标语言a.重点词汇和短语energy,light(v

14、.),heat(v.),renewable,non-renewable,fuel,blame,run outb.交际用语Expressing agreement and disagreementYes,I agree with you.Yes,I think so.I believe that youve got it right.I dont think so.I dont think thats right.Im afiraid you are wrong.2.Ability goals 能力目标Enable the students to talk about different sou

15、rces of energy and express their ownideas.3.Learning ability goals 学能目标Help the students learn how to give their ideas about the use of energy.Teaching important points 教学重点Enable the students to express agreement and disagreement.Teaching difficult points 教学难点Enable the students to learn how to exp

16、ress agreement and disagreement.Teaching methods 教学方法Brainstorming,listening and group work.Teaching aids 教具准备A tape recorder and a computer.Teaching procedures&ways 教学过程与方式Step I RevisionT:Good morning,everyone.Ss:Good morning,teacher.T:Sit down,please.Before class,ril check your homework first.Mar

17、y,would youread your homework to us?Check the students5 homework and have a discussion with the students about themistakes Mary made.Let the students have a clear understanding about the mistakesand then correct them.Step II Warming upT:As we all know,we depend on energy to do many things in our dai

18、ly life.Somepeople even say we could do nothing without energy.Can you tell me what we useenergy for?Sa:Energy lights our cities.Sb:Energy heats our buildings.Sc:Energy entertains us.With the help of electricity,people have got a lot of fun fromwatching TV,playing computers and so on.Sd:There are ma

19、ny other electrical appliances that make our life more convenient andcomfortable such as washing machines,microwaves,air conditioners and so on.Se:Today energy also helps people realize many so-called dreams in the past.Forexample,people can“fly”from one place to another by plane which runs on energ

20、y.Sf:Its true.In fact,not only planes but also cars,ships and trains run on energy.T:Well done.All that youve just said is right.So it seems that energy plays a veryimportant role in the modern world.Then where does all the energy come from?Openyour books and turn to page 25.Look at the pictures on

21、this page.They may help youfind out the answers.After a while.T:Whod like to tell us your answers?Sg:Wind power.Sh:Coal power.T:Right.Is there any difference between them?Si:Yes.Wind will never run out while coal is a limited source.T:Its true.As we know,an energy source is renewable when supplies o

22、f it never runout while some supplies,such as coal,will definitely run out one day.Energy of thiskind is called non-renewable sources.Please think of as many sources as you can anddecide which energy sources on your list are renewable and which are non-renewable.If necessary,give some words related

23、to the pictures which might be difficult fbr thestudents such as oil refinery,hydroelectric power and so on.The teacher should also collect as much information about different sources of energyas possible and show it to the students in class through a computer.In this way,thestudents will become mor

24、e interested in this topic and their knowledge on this aspectwill be enlarged.Sample answers:RenewableNon-renewableWind powerCoalSolar powerNatural gas and oilHydroelectric powerNuclear powerStep III Listening and DiscussingT:From what weve just talked about,it is clear that energy does a lot of goo

25、d to us.But every coin has two sides.Is there any negative effect of using energy?Sa:Yes.People use too much energy which is resulting in an increase in carbondioxide.That is how the global warming comes about.Sb:And meanwhile it pollutes the environment.T:Its true.Many people have realized the prob

26、lem.Next well do some listeningpractice on this topic.Lets see what other people think of this issue.The students are asked to read the questions quickly to find out the listening pointsfirst.Then listen to the tape twice and give the correct answers.T:Now please turn to page 31.Lets do listening.Be

27、fore you listen to the tape,pleaseread fast the statements in Exercise 1 to find out the listening points.Pay muchattention to the key points while listening.Play the tape fbr the first time.Help the students get a general understanding about thedialogue.The students listen and try to finish Exercis

28、e 1.Play the tape again,train thestudents9 ability to spot specific information and understand the implication in thedialogue.The students listen and finish Exercise 2.Several minutes later.T：Have you finished the exercises?Ss:Yes.T:OK,lets check your answers.Explain some difficult points if necessa

29、ry.T:Now read what Professor Chen and Li Bin say.Work in groups.Discuss who youagree with and give reasons.Use some of the phrases listed in Exercise 2 or anyothers you know.Step IV Homework1.Review the new words and expressions you learned in this class.2.Preview Reading.The Second Period ReadingTe

30、aching goals 教学目标1.Target language 目标语言a.重点词汇和短语compare,phenomenon,graph,fuel,trap,data,climate,catastrophe,consequence,range,per,glance,compare to,come about,fierce debate,result in,build upb.重点句式There is no doubt that the earth is becoming warmer.P26Without the 4greenhouse effect,the earth would b

31、e about thirty-three degrees Celsiuscooler than it is.P26They also agree that it is the burning of more and more fossil fuels that has resulted inthis increase in carbon dioxide.P262.Ability goals 能力目标Enable the students to talk about the causes and effects of global warming.3.Learning ability goals

32、 学能目标Help the students learn how to talk about the causes and effects of global warmingand express ideas about what people should do about it.Teaching important points 教学重点Help the students learn how to debate over the topic“We should do nothing aboutglobal warming.Teaching difficult points 教学难点Enab

33、le the students to learn the writing skills of the text and get a betterunderstanding of articles of this kind.Teaching methods 教学方法Listening,reading and group work.Teaching aids教具准备A recorder and a computer.Teaching procedures&ways 教学过程与方式Step I RevisionCheck the homework.Review the useful expressi

34、ons about agreement and disagreement.Show the students some pictures on the screen.The students have to give names ofdifferent energy sources relative to the pictures and deicide which energy sources arerenewable and which are not.Then ask the students to tell the effects of using theseenergy source

35、s.Step II Pre-readingShow a picture of greenhouse on the screen.T:Now look at the picture.What is it in the picture?S:A greenhouse.T:Right.Who can tell me what it is used for?Sa:A greenhouse is made of glass and is used for growing plants,especially duringcold weather.T:Yes,you are right.And how doe

36、s it work?Sb:The air inside is warm because the glass traps the heat from the sun and keeps itfrom escaping.This makes the greenhouse heat up and so the plants can growthroughout the cold period.T:Exactly.Thank you.But today we are not going to talk about greenhouse,weH talkabout greenhouse gases.Ha

37、ve you heard about this before?Sc:I know.In the atmosphere surrounding the earth there are gases,which are calledgreenhouse gases，including carbon dioxide,methane and water vapor.T:Thats correct.Then what do you think greenhouse gases do?Sd:Let me explain it.They trap heat from the sun and therefore

38、 warm the earth.T:Yes.Last class we talked about the effects of burning fossil fuels.One of the effectsis more and more carbon dioxide is being produced,which in turn increases the speedof global warming.Does it matter?What5re your opinions?Next well read an article“THE EARTH IS BECOMING WARMER BUT

39、DOES IT MATTER?”Step III While-readingGet the students to read the passage fast and meanwhile help the students form a goodhabit of reading.T:What do you think will be talked about at the sight of the title THE EARTH ISBECOMING WARMER BUT DOES IT MATTER?,Now please skim the passageto obtain a genera

40、l idea of the whole passage.While reading,pay attention to thewriting skills and if possible,divide the whole passage into several parts andsummarize the main idea for each part.After a few minutes.T:How many parts can this text be divided into?T:Any different ideas?OK.Now lets finish the form on th

41、e screen.Show the form on the screen and let the students complete the form.Main ideas of each partWriting techniquesStep IV ComprehendingLet the students read the passage again to find out the answers to the questions inExercises 1 and 2.T:Now lets listen to the tape.While listening,pay more attent

42、ion to specificinformation.Then read the whole passage by yourselves.Try to find out the answersto questions in Exercises 1 and 2.You may work in groups.Step V DebateGet the students to debate over the statement:We should do nothing about globalwarming.Let them work in groups of six to prepare it.T:

43、Now you are going to have a debate:We should do nothing about global warming.Please follow these instructions.Put the following instructions on the screen.Get into groups of six.Decide which three in your group are going to agree withthe statement(Group A)and which three are going to disagree with t

44、he statement(Group B).Group A discuss why they agree with the statement;Group B discuss why theydisagree.Group A and B get together.Tell each other the reasons why agree or disagreewith the statement.T:We dont have time to do it in class.Please finish it after class.Try to collect asmuch information

45、 as possible on the Internet and share it with the others in class.Nextclass ril get some groups to act out your debates.Step VI Homework1.Read the passage again and review the new words and expressions.2.Prepare the debate in groups.3.Preview Using Language WHAT CAN WE DO ABOUT GLOBALWARMING?The Th

46、ird Period Extensive ReadingTeaching goals 教学目标1.Target language 目标语言a.重点词汇和短语pollution,electrical,motor,can(n.),microwave,disagreement,title,make adifference,put up with,leave an electrical appliance on,so long as,and so onb.重点句式P30Together,individuals can make a difference.It takes a lot of energy

47、 to make things from new materials.Remember 一 your contribution counts.2.Ability goals 能力目标Get the students to realize what individuals can do about global warming.3.Learning ability goals 学能目标Learn what to do in daily life to reduce the carbon dioxide content in the air.Teaching important points 教学

48、重点Enable the students to know what to do in daily life to reduce the carbon dioxidecontent in the air.Teaching difficult points 教学难点Enable the students to learn how to make a poster.Teaching methods 教学方法Listening,skimming and group work.Teaching aids教具准备A recorder and a computer.Teaching procedures&

49、ways 教学过程与方式Step I RevisionCheck the students9 homework to see whether they have mastered what they learntlast class.Check their group work 一 debate.T:Have you finished your homework prepare a debate in groups?Ss:Yes.T:Which groups would like to come to the front and act out your debates?Chooseone a

50、s your representative.Ask a representative in each group to state their groups opinion.A sample debate:(A=Group A;B=Group B)A:We think people should do something about global warming.Because it couldhave many negative effects on the earth.With temperature increasing,the polar icecaps eventually woul