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　　Teaching Plan
　　Unit 4 Global warming
　　Reading: The earth is becoming warmer¡ªbut does it matter?
　　¢ñ Teaching Aims
　　1. Enable the students to learn the following useful new words and expressions£ºfossil fuel, go up, come about, flood, drought, famine etc.by pictures.
　　2. Enable students to master the reading skills by skimming, scanning.
　　3. Enable students to get the knowledge of global warming through the reading strategies and skills.
　　II Teaching Important and Difficult Points
　　Enable the students to get information about global warming using the reading strategies and skills.
　　III Emotion, attitude and value
　　Enable the students to be more aware of the importance of stopping global warming
　　Teaching Methods£º
　　Asking-and-answering activity to check the students¡¯ understanding of the text£»individual£¬pair or group work to finish each task.
　　Teaching Aids£º
　　A multimedia computer and a blackboard.
　　Teaching Procedures
　　Step 1 Lead-in
　　1) Greetings and lead in.
　　Show a film of The Day After Tomorrow and ask them the following question:
　　What can you see in the film?
　　--hurricane, tsunami, glacier melting .
　　What other disasters do you know£¿
　　--Flood, drought, famine.
　　What causes the disasters?
　　--It¡¯s the global warming.
　　What causes the the global warming?
　　--Picture1: the burning of fossil fuels
　　Picture2: greenhouse gases: carbon dioxide, water vapor, methane
　　As a result, the earth will become warmer and warmer.
　　Step2. Skimming:
　　Glance the first paragraph:
　　1. Who wrote the magazine article?
　　A. Janice Foster   B. Sophie Armstrong
　　2. What is the topic of the article?
　　A. The earth    B. Global warming
　　3. There are the names of the three scientists
　　in the article EXCEPT______.
　　A.Dr Janice Foster B. Sophie Armstrong
　　C. Charles Keeling D. George Hambley
　　Step3 Scanning for detailed information (Group work)
　　Part2(2-5)
　　1. What do the two graphs show?
　　--The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
　　--The second graph shows carbon dioxide went up from 1957 to 1997
　　2. What do you know about greenhouse effect?
　　Greenhouse gases trap(ÎüÊÕ) the _heat_from the sun and therefore _warm_the earth.
　　3. Which following is NOT TRUE about global warming? (D)  
　　A. The increase of temperature is due of the burning of the fossil fuels.
　　B. The burning of the fossil fuels caused the increase in carbon dioxide.