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《Lesson 1 Global Warming》精品教案优质课下载
Important and Difficult Points（重难点）:
To improve students’ reading skills.
Teaching procedures:
Step1 Lead-in（情景导入）
Let’s appreciate some pictures together.
Step2 Make a prediction
Based on the title “Can we take the heat”and the following pictures.
Step3 Fast reading
Read the text and match the heads with the paragraphs.
Step4 Detailed reading
Read the text quickly and answer the questions.
1) What is global warming?
2) What human activities are causing global warming?
3) By how much has the global average temperature increased in the last 10 years?
4)Are greenhouse gases necessary for life on Earth?
5) How can we help solve the problem of global warming?
Step5 Structure Analysis
1. In the last few decades, scientists have reached consensus and reported that human beings are causing changes in the Earth’s climate — something previously seen as beyond our control.
2. Looking ahead, scientists believe that global warming could be one of the biggest environmental problems facing the 21st century.
3. Without these naturally occurring gases, the sun’s rays would bounce back into space leaving the Earth cold and impossible to live on.
4. Given this data, it seems that the link between human activities and rising global temperatures is not merely a coincidence.
Step6 Group-work(合作探究)
Para.1 Introduction: Human beings are causing__________________________ and it is believed that ________________ could be one of the biggest_____________________________ in the 21st centry.
para.2 Definition: Gloable warming refers to________________________ in the Earth’s temperrature that, in turn,___________ climate change.
para3 Causes:Many experts insist that the blame for this global warming can mostly_________________________.