1、大氣環境保護沉浸式雙語教案設計 高一地理上冊第二章第七節廣東省東莞市東華初級中學 葉曉霞教學目標1.了解大氣污染所形成的全球變暖、臭氧層的破壞、酸雨等現象產生原因及危害；2.正確認識大氣環境保護的重要意義；3.通過沉浸式雙語講授，學生在掌握地理知識的過程中，應用英語，提高英語應用能力。教學重點1.全球變暖2.臭氧層的破壞和保護 3.酸雨的危害教學難點英語語境的建立與學科學習相結合教學準備多媒體課件教學過程1Introduction (導入新課)Show to the students the picture that the earth is sweating like a man feeli

2、ng enormously hot in summer and the picture of Antarctic hole of ozonosphere， and watch the short film about acid rain. (出示地球出汗的卡通片，南極臭氧空洞圖片以及觀看酸雨影片片段，指出全球大氣環境已經受到嚴重的污染，所以本課要研究大氣環境保護)2presentation （教授新課）2.1. 整體思路Guide the students to know three atmospheric problems， each problem instructed in this w

3、ay: first， what causes the problem; secondly， what harmful affects such problem bring; and finally， measures that can be taken to solve the problem.(分別講述大氣環境的三大問題，每個問題的以如下方法呈現：一產生問題的原因；二是其危害，三應當采取的措施)2.2 具體教材雙語的講授。2.2.1 global warmingAfter a picture that show the change of the temperature of the ear

4、th in recent year， I put forward a question: “Is the temperature going up or down? The students answered and students understand what is “global warming”. Then the students discussed the cause of global warming in English， I listened to them and help them express themselves in English， finally concl

5、usions were reached about what the human should do to stop the earth from getting hotter < in this session， students listened to English speaking and they spoke English in discussion and even they tried to express their ideas in English.>2.2.2 the protection of ozone layerAt first a short Engl

6、ish film show how the CFC “eat” the O3， then with the more widely use of the refrigerator that used CFC， Antarctic hole of ozonosphere appeared(comes the picture of Antarctic hole of ozonosphere) after that， English film show harmful affects about the depletion of ozone layer. In the same way， what

7、to do to protect ozone layer is the last thing for students to know.< English film is good environment for students to immerse themselves in English. ) 2.2.3 acid rainput forward question after question to fulfill the instruction of the content， such as a) what is acid rain; b)how it comes into b

8、eing; c) where does acid rain frequently happen d)why acid rain is harmful e)what to do to reduce acid rain. ( In this session， I establish question for students to think about， then by picture and film I let the students analyze the problem themselves， and solve the problem themselves， in which the

9、y were trained to analyze facts to find the answer， at the same time， English thinking pattern is applied. )3exercises （課堂練習）我用英文設計了幾個單項選擇題和雙項選擇題復習鞏固學生所學的教學內容，同時也通過作題，學生的英語閱讀理解能力得到了鍛煉。練習如下：1Choose the right answer from A， B， C and D（there is only answer that is right）.1) Carbon dioxide is the main _

10、in the atmosphere.A.gas that can form acid rainB. greenhouse gas C. gas that will damage the ozonosphere D. gas that can form cloud to rain2)Deforestation will result in the increase of_.A.carbon dioxideB. carbon oxideC.sulfur dioxideD. CFC3)Apart from the natural factors that damage the ozonosphere

11、， the human beings break-down of ozone mainly refers to _. A.the release of carbon oxideB. the release of carbon dioxideC.the release of CFC D. the release of nitrogen oxide4)In the atmosphere， ozonosphere lies in the _.A.troposphereB. stratosphereC. mesosphereD. hydrosphere5)The acid rain in China

12、is mainly sulfated acid rain because _.A.we burn wood for main energyB.we burn coal for main energyC.we have power station propelled by fireD.our power station propelled by water2.choose the two right answers from A， B， C and D.1)The artificial reasons for the increase of carbon dioxide in the atmos

13、phere are _.A.burning of fossil fuelsB.construction of power stationC.deforestationD.the sea is polluted 2)The direct reasons for global warming to raise the sea level are _.A.there will be more riversB.more rainfall and less evaporationC.ocean water expand due to the increase of temperatureD.melted

14、 polar ice makes the sea level rise3)The damage of the ozonosphere result in _.A.more people will have skin cancerB.rainstorms in the whole worldC.global drought D.damage of the ecologic environment and agriculture4)The gases that will form acid rain are _.A.carbon dioxideB. sulfur dioxideC.nitrogen

15、 oxideD. carbon oxide5)The affects that acid rain result in are _.A.acidify the soilB.more people get skin cancer C.acidify water in the rivers and cause fish to dieD. decay in buildings and culture relics4.homework (課后練習)Answer the following questions according to the text: Part 1 global warming:6)

16、What are the main problems of atmospheric environment today?_7)Is the global warming only due to natural reasons?_8)Whats the artificial reason that makes the air temperature rise?_9)In what ways can the human beings increase carbon dioxide in the atmosphere?_10)How does the sea level rise? (there a

17、re two ways， what are they?)_11)What will be affected when the rainfall and humidity conditions around the world change?_12)What are the measures to reduce the amount of released carbon dioxide?_Part 2 the damage and protection of ozonosphere13)Whats the artificial reason for the reduction of the amount of ozone in the stratosphere?_14)If the amount of ultraviolet rays reaching the earth surface increases， what are the harmful affects? _15)What can we do to protect the ozonosphere?_Part 3 the damage and prevention of acid rain16) What is general