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人教2003课标版《Warming up、Pre-reading、Reading、Comprehending》精品教案优质课下载
2. Introduces students to the topic of the reading passage and the term “greenhouse gases”.
3. Do exercises
⑴ What is the building made of and what its purpose?
⑵ What’s greenhouse effect?
Teaching aims:
To read the text “The earth is becoming warmer—but does it matter” and understand what it says.
To make students find out some useful words and expressions.
Teaching procedures:
Step 1. Read the text (Page26)
Answer the following questions.
1 what is the purpose of the first paragraph?
To introduce the topic.
2 what are the diagrams for?
To illustrate points by providing evidence.
3 what is the purpose of the last paragraph of the article?
To reflect on the major theme of the text and to predict what might happen in the future.
Step 2. Read again for more details
To understand the main idea of the text, we are going to read it once again. Write down the key sentence of each paragraph at the same time.
Key sentence of each paragraph:
A debate over whether it is human activity that has caused the global warming or whether it is just a natural phenomenon.
Many scientists believe people have caused the increase in the earth’s temperature.
The increased extra amount of carbon dioxide traps more heat energy causing the global temperature to go up.
The levels of carbon dioxide have increased greatly over the last 100 to 150 years.
There are some different attitudes towards the causes of this increase in carbon dioxide.
Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius but it could be as much as 5 degrees Celsius.