In this procedure students will talk about the causes and consequences of global warming. Begin the lesson by asking students to discuss the questions in before you start

T: Yesterday we learned from the passage in Culture Corner that gases from burning coal and oil are the major causes of global warming. Did you make your survey on how students come to school?

S1: I asked 40 students. Ten in the forty come to school by bus. Twenty-one ride bicycles. Eight of the forty take a car and only one walks to school.

...

T: From the survey you made we can see most of students in our school take a green way to school. I'm glad we are not having so many cars. Because gases pumped into the atmosphere from cars will speed up global warming. Have you noticed that in 2006 we had a very warm winter? Experts say global warming has changed the climate in China. In this class we are going to learn more about global warming. We will read an article "Can we take the heat?" Before we start the text, please discuss the question in Before you start.

Step II Before you start

Discuss the two questions in Before you start and work out the meanings of the given words.

T: OK, open your books and discuss the question in Before you start on Page 6. Which countries do you think contribute more to global warming, developed countries or developing countries?

Ss: Developed countries. Because they have more cars and factories and gases from cars and factories are the major cause of global warming.