Unit 4 Global warmingReadingTeaching goalsTarget languagewords and phrases:energy, light(v.), heat(v.), renewable, non-renewable, run out, compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build up, keep onAbility goalsEnable the students to talk about different sources of energy.Enable the students to read the text, understand what it is about and talk about the causes and effects of global warming.Teaching important & difficult pointsEnable the students to get a better understanding of articles of this kind.Teaching aidsA projector and a blackboardTeaching proceduresStep 1 Warming upT：Now let’s look at a picture on the sli de and answer the question below.What is the greenhouse made and used for?A greenhouse is made of glass and is used for growing plants, especially during cold weather.What’s greenhouse effect?Step 2 ScanningRead the text quickly and find the answer to the questions:1. Who wrote the magazine article? What is the name of the magazine?Sophie Armstrong, Earth Care.2. What are the names of the three scientists mentioned in the article?Dr Janice Foster, Charles Keeling, George Hambley.3. What do they think about global warming? Do they agree with one another?They don't agree with each other.Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmen talcons equences.Charles Keeling believes it is the burning of more and more fossil fuels that is resulting i n a bigincrease in carbon dioxide.The first graph shows the temperature increase of one degree Fahrenheit between 1860to 2 000.The second graph shows the carbon dioxide content in the atmosphere from 1957 to 197 7.4. What are the two graphs about?The first graph shows the temperature increase of one degree Fahrenheit betwe en 1860to 2000. The second graph shows the carbon dioxide content in the at mosphere from 1957 to 1977.5. What is the main topic of the article?Global warming/ the warming of the earth.Step 3 SkimmingRead the passage carefully and judge whether the statements are true or false.1. The temperature last century did n’t increase much.2. Everyone believes that global warming is caused by the activities of human s.3. Janice Foster believes that global warming is caused b the burning fossil fu els.4. Natural gas is a greenhouse gas.5. Carbon dioxide is a byproduct of burning fossil fuels.6. People accept Charles Keeling’s data because he took accurate measurement s.7. Flooding could be one of the effects of future global warming.8. George Hambley believes scientists are just guessing about the effects of gl obalwarming.9. George Hambley is worried about the effects of carbon dioxide on plant gr owth.10. It is clear what the effects of global warming will be.Keys: True: 3, 5, 6, 7, and 8 False: 1, 2, 4, 9, 10Step 4 Detailed readingRead the text carefully and try to find out how many parts we can divide the text into and find out the main idea of each part.Step 5 DebateGet into groups of six. Decide which three in your group are going to agree with the statement and which three are going to disagree with the statement.Group A: We shall do something about global warming.Group B: We shall do nothing about global warming.Group A discuss why they agree with the statement; Group B discuss why they disagree.Group A and B get together. Tell each other the reasons why agree or disagree with the statement.Step 6 Homework1. Read the passage again and review the new words and expressions.2. Prepare the debate in groups.3. Surf the Internet for more information about global warming。
