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1、说课稿Unit4 Global warming-The earth is becoming warmer-but does it matter?本节课是高中英语新课标选修6第4单元的课文阅读课，课文标题为“the earth is becoming warmer-but does it matter?” 这个单元的课题global warming 是一个具有非常现实意义的话题，因为全球变暖已经是一个非常严峻的问题，而且日渐得到全世界的瞩目和关注，因为它关系着地球和人类的未来命运。因此全球变暖是如何产生的，它对人类和地球未来究竟有何影响，我们该如何应对这个问题是我们当代中学生应该了解的，这也正是
2、这一节课的课文内容。这堂课有四个教学目标，一是阅读和理解课文主旨内容，使学生了解什么是全球变暖，它是如何产生的，二是找出每一段的段落大意，三是理解课文的细节信息，最后是让学生能运用所学内容进行讨论-whether we should do something about global warming. 这堂课的教学重点在于指导学生多层次阅读，理解和掌握课文内容，完成阅读任务，教学难点在于指导学生对课文阅读内容进行整合，再利用其进行口头讨论，表达和支持自己观点。整堂课以阅读理解为主，听说为辅。在这里，我特别想提出的是一个我一贯坚持的做法，那就是借助中学生双语报b版上的课文理解部分及课文链接部分作
3、为有效教学资源，辅助课堂阅读教学，提高教学效果。有经验的老师也知道，阅读教学过程中，教师必须给学生设置由易到难，由快到慢的阅读任务，才可达到较佳的阅读效果，同时也对学生进行了任务型阅读训练，让他们的阅读能力逐步提高，从而训练并提高其高考应试能力。因此，好的阅读任务的设定就至关重要了。我在长期的教学中发现除了现有的教材之外，众多的教辅资源是教材的有效补充，而另外课文链接部分则真正是教材课文内容的有效链接，极大地扩大了学生的阅读量和阅读面。 第一个步骤是新课的导入（leading-in）。我就直接说出：(1) it is global warming. (2) it is about reduci
4、ng the amount of carbon dioxide in the atmosphere. 接着，我继续问第三个问题：（3）what do you think of the two answers? 这个问题因人而异会有不同的答案，让他们几个人表达观点后，指引他们回到主题上，指出第一个答案意味着全球变暖问题已经越来越成为全世界共同瞩目和关心的严峻问题，第二个答案意味着全世界开始寻求协作共同解决问题。接着我又问：do you know how global warming has come about? does it have great effects on the earth？t
5、hat is what we will read today.由此导入新课。为了学生更好更快地阅读理解全文，接下来我就带着他们快速浏览pre-reading , 了解什么是温室(greenhouse)，什么是温室气体(greenhouse gas)什么是温室效应(greenhouse effect)，从而扫除部分阅读障碍。下面开始进入课文阅读。阅读分三个层次，第一层次是让学生带着学生用书课文后面第一题中的5个问题快速跳读(skimming)全文，找出相关信息，并核对答案。提醒学生无需逐字逐句阅读，只需找出问题答案，时间为5分钟。而这一层次的问题设置都与课文主旨有关，通过这一步骤，学生掌握了文章
6、主旨和段落大意。第二层次阅读是细节阅读(scanning)，要求学生进一步阅读课文，查找细节信息，完成学生用书课后第二题，判断6个句子正误。通过这一步骤，学生了解了有关全球变暖的更多知识。这三个层次的任务是由浅到深，由易到难，由总到分又由分到总，有较全面的覆盖性。小结之后，开始进入本堂课的难点阶段，即让学生把输入的课文信息进行整合分析再输出。也就说把学生分成六人小组进行讨论(discussing)，论题为we should do something about global warming .注：由于本单元词汇已于前面特别学习过，本节课中生词不特别处理。课文中的某些语法结构及知识点将于下一堂课
7、进行教学。Teaching PlanUnit4 Global warmingThe earth is becoming warmer-but does it matter?Design Idea This is the second period of this unit, aiming to help students get a better understanding of the text. The emphasis of this period is mainly placed on reading compression, discussion and speaking. Ther
8、efore, a teacher needs to guide them to finish all the reading tasks as well as practice reading and speaking. Meanwhile, Exercises designed should be simple and easy to operate, which in turn is of great help to students understanding.Teaching and learning goals:1.read and learn about global warmin
9、g2.find out the main idea of each paragraph3.read and understand detailed information4.have a discussion about whether we should do something about global warmingTeaching important point: reading comprehendingTeaching difficult points:1.Let the students analyze the whole text and conclude the main i
10、dea of the each para.2. Improve the students reading ability.Teaching methods: Skimming method, task-based method, individual and group.Teaching procedures:Step1.Lead-inLead in the topic of this unit by enjoying the short video “the day after tomorrow”.T: What happened in the video? How did it happe
11、n?Step2.SkimmingAsk students to skim the passage with the following tasks:1.What is the main topic?2.What are the names of the three scientists in the article?Step4.Careful readingAsk students further read the passage more carefully and get some useful information to finish the following tasks.Para.
12、11. How much did the temperature of the earth rise during the 20th century?2. What is the question of Sophie Armstrong? Para.21.What conclusion can you make from the Graph1?2.Who is to blame for the earths becoming warmer?Para.3Para.4_ found out the amount of carbon dioxide in the atmosphere from 19
13、57 to1977. A.Dr. Janice Foster B. Charles KeelingC. George Hambley D. Sophie ArmstrongPara.5True of False1.Not all scientists accept this data.2.The burning of the fossil fuels caused this increase in carbon dioxide.Para.6They dont agree with each other.Dr Foster thinks the effects of global warming
14、 could be very seriousGeorge Hambley thinks global warming will be mild with few bad environmental consequences.Negative effects Positive effects 1. cause the sea level to rise 1. make plants grow quicker 2. severe storms 2.crops will produce more 3. floods 3.a greater range of animal 4. 4.droughts
15、4. make life better5.famines6.the spread of diseases7.disappearance of speciesPara.7The author probably agrees that _A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about the effects of global warming.Step5.Summary Step6.writing.Step7.HomeworkWrite a short passage about the effects of global warming.Prepare the language points of this passage and underline the important o
