Unit 4Global warming—Reading(教学设计)富源一中刘胜丽教学目标知识目标：(1) 掌握阅读的方法和技巧，让学生了解地球温度上升的现象、原因及影响。
(2) 掌握文中“it”在强调句中的用法。
能力目标：能较好地运用泛读和精度的阅读技巧，准确地从文中找到关键信息。
德育目标：(1) 通过学习，帮助学生树立“节约能源，保护环境”的主人翁意识。
(2) 关爱生命，爱护环境，学会竞争和合作，建立自信心和集体荣誉感。
情感目标：通过学习调动学生的学习积极性，让学生树立正确的世界观和人生价值观。
教学重点：提高学生对英语学习的兴趣和积极性，较好地掌握泛读和精读的方法。
教学难点：如何让学生较好地掌握泛读和精读的方法，便把所学知识运用于高考中。
教学方法：(1) 以学生为主体，教师为主导，泛读和精读相结合。
(2) 采用讨论、协作、探究、竞争的教学模式，引导学生灵活运用所学知识。
(3) 评价激励表运用于教学：即对小组在整节课中的综合表现给打分让组与组之间有个比较，从而达到激励上进的效果。
如下表所示：G代表Group; 根据班级情况可分成8个小组Teaching proceduresStep1: Greetings and Lead-inQuestions：(1) Are you hot ?(1) Compared to the past few years,what’s the weather like this year ?(2)What causes the global warming?Human activity or a random but naturalphenomenon?(3) show some pictures to the students.( 设计意图：通过提问和图片展示引出本节要讨论的话题—全球在变暖。
) Step2：Fast-readingReading Comprehension ILet the students fast read the the passage and then answer the following questions.1. What’s the main topic of the article?2. Who wrote the magazine article? What is name of the magazine?3. What has caused global warming?4.What do scientists think makes the earth’s temperature go up?5. How does “greenhouse effect” come about?Answers:1.It’s about global warming\the warming of the earth.2.They are Dr.Janice Foster,Charles Keeling and George Hambley.3.Human activity.4.The burning of fossil fuels.5. It comes about when small amounts of gases in the atmosphere trap heat from the sun and therefore warm the earth.（设计意图：训练学生归纳、总结的能力）Reading Comprehension II( pair work)Read the article again.Are these statements true or false( P27)? True(T) or False(F) questions. ( )1.The temperature in the last cen tury didn’t seem to increase much.( )2. Everyone believes that global warming is caused by the activities of humans.( )3. Janice Foster believes she can measure the future global rise intemperature.( )4. The rise in carbon dioxide is causing a steady increase in global warming. ( )5. George Hambley believes that global warming will do good rather than harm to the earth.( ) 6. It is clear what the effects of global warming will be.Answers: 1.T 2.T 3.F 4.T 5.T 6.F（设计意图：训练学生积极参与、协作、竞争的能力）Reading Comprehension IIIGet the students read the passage again and ask some students answer the following questions.1.The purpose of the first paragraph is to ___.A.introduce the writerB. explain a changeC. introduce the topicD. raise a question2. The graphs are used to _____.A.illustrate points by providing evidenceB.tell the change of temperatureC.tell the content of carbon dioxide in the airD.interest the readers3. Greenhouse gases refer to_______.A. carbon dioxideB. the burning of fossil fuelsC. byproducts of the burning of fossil fuelsD. coal, natural gas and oil4. Greenhouse effect _____.A. is a natural phenomenonB. happens when there’s too much carbon dioxideC. does great harm to human beingsD. makes life for human beings better5. _____ found out the amount of carbon dioxide in the atmospherefrom 1957 to1997.A. Dr. Janice FosterB. Charles KeelingC. George HambleyD. Sophie Armstrong6. Which of the following statements is True?A.Burning fossil fuels causes the global warming.B. We will have more food with global warming.C. Global warming means disasters to humans.D. More greenhouse gases will gather in the atmosphere.Answers: 1—5 CACAB 6.D设计意图：进一步训练和提升学生快速阅读，捕捉文中信息的能力。
Step3：Careful- reading（Group work）Let the students read the passage carefully and discuss the following questions in groups,then fill in the chart below. The whole class will be 8 groups.The different ideas between Dr. Janice Foster & George HambleyFill in the chart:G1—(1) G2—(2) G3—(3) G3—(4) G5—(5) G6—(6) Comment: G7—(1) (2) (3) G8—(4) (5) (6)Answers: (1)go up (2) catastrophe (3) very serious(4) positive (5) produce more (6) a greater range of animals设计意图：训练和提升学生精读的能力，同时激发他们积极参与、协作、竞争的热情和意识。
Step4: Summary(1)Get the students master the method of fast-reading and careful-reading.(2)Get the students discribe the main idea of the passage using their own words.(3) Get the students learn to live a low-carbon life.Step5: Homework1. Prepare a debate in groups.2. Surf the Internet for more information about global warming.Step6: 主要板书Unit 4Global warming—ReadingQuestions:1. What’s the main top ic of the article?2. Who wrote the magazine article? What is name of the magazine?3. What has caused global warming?4.What do scientists think makes the earth’s temperature go up?5. How does “greenhouse effect” come about?春天的风是有灵性的，依着风的眼眸，我看到了那一株株桃花读信的倩影，在桃林深处，紫色的青藤爬满那个小屋。