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1、 安徽省滁州市第二中学高中英语 Unit22 Environmental Protection The Second Period Lesson 1 Global Warming教案 北师大版选修8Teaching goals 教学目标1. Target Language目标语言a. 重点词汇和短语consensus, beyond, relevant, refer, bounce, pin, coincidence, condemn, federal, reservation, sacrifice, advocate, recycle, substitute, beyond ones con
2、trol, take action, ahead ofb. 重点句子In the last few decades, scientists have reached consensus and reported that human beings are causing changes in the Earths climate something previously seen as beyond our control.2. Ability goals 能力目标 Learn what global warming is and enable students to learn its ca
3、uses and consequences.3. Learning ability goals学能目标By reading an article help students to learn how they can help solve the problem of global warming.Teaching important points教学重点What human activities are causing global warming and how we can help solve the problem of global warming.Teaching difficu
4、lt points教学难点How we can help solve the problem of global warming.Teaching methods教学方法 Listening, reading, discussing.Teaching aid 教具准备Multimedia computer.Teaching procedures & ways 过程与方式 Step I Leading inIn this procedure students will talk about the causes and consequences of global warming. Begin
5、the lesson by asking students to discuss the questions in before you startT: 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 th
6、e 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. Im glad we are not having so many cars. Because gases pumped into the atmosphere fro
7、m 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 d
8、iscuss the question in Before you start. Step II Before you startDiscuss 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, d
9、eveloped 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 d
10、iscussing 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 Power
11、Point. Step III Read to learnDeal with the reading part.ScanningAsk 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 war
12、ming refers to an average increase in the Earths 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
13、of carbon dioxide goes into the atmosphere every year for every one of the Earths 6 billion people. Over the last 100 years, the global average temperature has increased by 1F. If we continue to produce carbon dioxide and other gases in such quantities, we are condemning life on Earth and should exp
14、ect severe consequences.Skimming Show the following form on the PowerPoint and ask them to work in groups and complete the form.termdefinitioncauses consequenceshow to solve the problemGlobal warmingFive minutes later, show the suggested answers on the PowerPoint. termdefinitioncauses consequencesho
15、w to solve the problemGlobal warmingrefers to an average increase in the Earths temperature.When greenhouse gases in the atmosphere increase, more heat is trapped.(the greenhouse effect)The Earths temperature rises.Governments action and each person should play their part (small changes made by ever
16、yone worldwide). Ask students to skim the text and then finish Ex3 on Page 7. Students may discuss the questions in groups.T: Look through the questions in Ex 3 on Page 7 first. Then skim the text to find the answers. Then check the answers with the whole class.Suggested answers:1. Global warming is an average increase in the Earths
