unit4说课.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 4,Global Warming,说课人,周蕾,Part 3,Part 4,Part 5,Part 1,教 材 分 析,Analysis of teaching material,教 学目 标,Teaching goals,教 学 策 略,Teaching strategies,教 学 设 计,Teaching design,Part 2,学 生 分 析,Analysis of,students,一,.,教材分析（,Analysis of teaching material,）,本单元的中心话题是人类当今面对的环境问题，主要探讨了“全球变暖”和“节约能源”等方面的问题。由于人类过多燃烧化石燃料，大气中二氧化碳的含量逐年增加，导致全球气温上升。,本堂课“阅读”,(Reading),主要讲述了地球温度上升的现象和原因，以及人们对此的不同观点。,二,.,学生分析（,Analysis of,students,）,本堂课所教学生积极和活跃是他们在课堂学习实践活动中的特点。大部分学生能够熟练应用高效课堂模式学习。表现为：大部分学生能够做到课前预习和准备，积极主动的参与课堂活动，如小组讨论，展示，点评等。,全球变暖环境问,这一话题，对于学生来说很熟悉。如果只是引导学生阅读科学性比较强的文章，可能会导致课堂的沉闷，未必能够达到预期的教学目标。因此，引入了一段关于全球变暖的视频，并且让学生在课前寻找关于环保的口号以活跃课堂气氛、调动学生的学习热情。,1.,深入,理解课文,，掌握课文中的基础知识，提高,扫描式阅读和精读,的能力。,2.,通过合作探究，主动质疑，学会总结段落大意的方法。,3.,让学生了解全球变暖的原因，讨论缓解全球变暖的措施。,4.,帮助学生树立“,节约能源，保护环境,”的主人翁意识。,For groups:,抓住各环节高效完成课堂任务。,For members:,A,层：完成课堂任务，熟记重点句子。,B,层：完成课堂任务。,C,层：能够根据关键词流利复述课文。,三,.,教学目标（,Teaching goals,）,（一）学习目标,Learning aims,（二）教学重、难点（,Teaching important and difficult points,）,1.,学习本单元的重点词汇，短语和句型。,2.,学习全球变暖；培养阅读能力。,四,.,教学策略（,Teaching strategies,）,（一）学法,(Studying methods),由于教学对象个体存在差异，为了实现教,学的有效性，使不同层次的学生都学有所获并能体会成功，从而以更高的热情投入英语学习，把全班分成,9,个小组，在课堂教学中通过各小组成员合作探究，互动交流，评价等形式完成课堂任务。,(,二,),教法,(Teaching methods),课堂环节,1,、明确“学习目标”,2,、,总结导学案完成情况,3,、合作探究,4,、,展示点评,5,、达标检测,6,，学科班长总结,五,.,教学设计（,Teaching design,）,导学案的设计：,课前预习案,【,自主学习,】-,大胆试,培养学生扫描式阅读的能力。,Task I,：,Scan the text and then choose the best answer according to the text.,1.Which of the following is TRUE according to the text?,A.The temperature of the earth increased about one degree Fahrenheit during the 20th century.,B.The carbon dioxide content in the air increased by 70 parts per million from 1957 to 1997.,C.All scientists accept the data in graph 2 except Charles Keeling.,D.Janice Foster says that more carbon dioxide will make plants grow faster.,2.Which of the following is Dr Janice Fosters opinion?,A.The result of the temperature increase will be serious.,B.The amount of warming is nothing serious.,C.We neednt worry about high levels of carbon dioxide.,D.Global warming is a natural phenomenon.,3.What is mainly discussed in the text?,A.Carbon dioxide B.Water vapor,C.Gases in the atmosphere D.Temperature increase,4.According to the text,which of the following statement is not true?,A.Carbon dioxide is a byproduct of the burning of fossil fuels,B.All the scientists agree that the burning of more and more fossil fuels leads to the increase of carbon dioxide,C.If we stop adding carbon dioxide and other greenhouse gases from now on,the temperature will stop going up,D.It is still not clear what the effect of global warming will be.,Task II:Scan the text again and then decide if the following statements are true or false.,培养学生细读的能力,People accept Charles,Keelings,data because he took accurate measurements.(),Flooding could be one of the effects of future global warming.(),George,Hambley,believes scientists are just guessing about the effects of global warming.(),George,Hambley,is worried about the effects of carbon dioxide on plant growth.(),It is clear what the effects of global warming will be.(),课堂探究案,【,合作探究,】-,我参与,Task:Scan the text and find the useful phrases.,精选下列短语，帮助学生提高词汇量,1,依靠某人或物干某事,2,消耗能量,3,发生,4,由于,5,吸收太阳的热量,6,天然气,7,变热,8,温室气体,9,与,相比较,10,一方面,另一方面,11,毫无疑问,12,自然现象,13,赞同,14,温室效应,15,大量的,16,趋向,17,被困在,18,上升,19,作精确的统计,20,每百万,Task:Read,the text and pay attention to these difficult sentences,then try to translate them.,挖掘,4,个重难点句子，分析句型，并设置仿写，加深记忆。）,There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.,翻译：,_.,仿写：,_ radio and television are important means of communication.,（毫无疑问，收音机和电视机是信息交流的重要方式）。,_she will change her mind.,(,我拿不准她是否真的会改变想法,),。,All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal,natural gas and oil to produce energy.,翻译,:_.,that,在句中引导,_,对,_,进行解释说明,.,在这种从句中，先行词多为,fact,news,idea,thought,question,reply,report,remark,等，且,that,不能省略。,仿写：,Which journal does the library _?,图书馆订有哪些报刊？,They were all very much worried over the fact_,（对你生病这件事，他们都很焦虑）。,It was a scientist called Charles Keeling,who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.,译,:_,此句是一个,_.,句型为,_.,仿写：,It was a room_.,(,它是我们过去常在开会的房子,),。,_ has broken the record.(,是小明打破了纪录,),。,They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.,译,:_.,此句是一个,_.result in,意思是,_.,仿写：,_.,（努力终于成功）。,He,_,and finish the job in time.,(,他的确努力工作，按时完成工作,),。,Task:Read the passage and answer the following questions.,设置,3,个问答题，帮助学生理解文中内容,1.Who wrote the magazine article?What is the name of the magazine?,2.What are the names of the three scientists mentioned in the article?,3.What do they think about global warming?,【,课文复述,】,AB,层能熟练复述课文，,C,层能根据关键词复述。,培养学生总结段落大意的方法和流利复述课文的能力,The earth is becoming warming and all scientists _ _ the view that the increase in the earths temperature is due to the burning of fossil _.Some _ of this process are called _ gases,the most important one of which is _.We need these gases,but the problem begins when we add huge _ extra carbon dioxide into the atmosphere.It means that more heat energy _ to be trapped in the atmosphere causing the global temperature to _.A scientist called Charles Keeling found that the carbon dioxide in the atmosphere went up from around 315 parts to around 370 parts _ million in 40 years.All scientists accept the date and agree the burning or more and more fossil fuels that has _ this increase.,However,the attitude of scientists towards this rise is completely different.On the one hand,Dr.Foster thinks that the _ which increases the temperature by 5 degrees would be a _.On the other hand,George,Hambley,who are _ this view,believe that we should not worry about high levels of carbon dioxide in the air.They predict that any warming will be _ with few bad environmental _.But no one really knows the effects of global warming.,说教学评价,在教学中我使用了多种评价手段，有老师对学生的评价，还有生生互评。还是用大量鼓励性语言。用多种激励性语言鼓励学生的创新精神，促进学生自信心的树立，形成有效的学习策略，并顺利完成教学任务。,以上是我对,Unit 4 A Global warming,的一个设计想法和理论依据，有待在实践中进行检验。敬请各位专家不吝批评指正。我真诚的希望得到各位专家的指点。,非常谢谢,