北師大版高中英語選修八unit22environmentalprotectionthesecondperiod教案-文庫吧資料
2024-12-11 00:00本頁面
【正文】 S1: I asked 40 students. Ten in the forty e to school by bus. Twentyone 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. Be cause gases pumped into the atmosphere from cars will speed up global warming. Have you noticed that in 2021 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. T: Good answer. Please scan the text for the given words in Ex2 and try to work out their meaning. While students are discussing the words, Teacher should walk around the classroom and give necessary help when needed. Several minutes later, ask students to present their answers either in English or Chinese. Students may even be encouraged to explain the meanings using pictures. Show the suggested answers on the PowerPoint. Step III Read to learn Deal with the reading part. Scanning Ask students to scan the text and find what exactly global warming is. T: What is the title of Lesson 1? Ss: Global Warming. T: Do you know what exactly global warming is? Please scan the text and find the answer in the text. Ss: Global warming refers to an average increase in the Earth’s temperature. T: Quite good! Then skim the text and find what human activities are causing global warming. S: As a result of increased industry, agriculture, the cutting down of forests, the increase in transport and the burning of fuels, nearly 6 tones of carbon dioxide goes into the atmosphere every year for every one of the Earth’s 6 billion people. Over the last 100 years, the global average temperature has increased by 1176。F. 4. Yes, they are. Because greenhouse gases trap heat from the sun in the Earth’s atmosphere. Otherwise the earth would be very cold and unsuitable for life. 5. We can take public transport, recycling, using lowflow shower heads, buying efficient light bulbs to stop global warming. Step IV Explanation During this procedure teacher will play the tape for students. Students will underline the difficult sentences. After listening to the tape, Teacher will explain the text and deal with language problems. T: After doing the prehension of the text, let’s deal with some difficult language focuses. Now I will play the tape for you .Please make a mark where you have difficulties. After listening to the ta
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