《大气环境保护》沉浸式双语教案设计

1、大气环境保护沉浸式双语教案设计人教版高一地理上册第二章第九节叶晓霞 （广东省东莞市东华中学 523128）教学目标：1了解大气污染所形成的全球变暖、臭氧层的破坏、酸雨等现象产生原因及 危害；2 正确认识大气环境保护的重要意义；3 通过沉浸式双语讲授，学生在掌握地理知识的过程中，应用英语，提高英语应用能力；教学重点：1）全球变暖 2）臭氧层的破坏和保护 3）酸雨的危害教学难点：英语语境的建立与学科学习相结合教学准备：多媒体课件教学过程：1Introduction (导入新课)Show to the students the picture that the earth is sweating l

2、ike a man feeling 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,南极臭氧空洞图片以及观看酸雨影片片段，指出全球大气环境已经受到严重的污染，所以本课要研究大气环境保护)2 presentation （教授新课）2.1. 整体思路Guide the students to know three atmospheric problems, each problem inst

3、ructed in this way: first, what causes the problem; secondly, what harmful affects such problem bring; and finally, measures that can be taken to solve the problem.(分别讲述大气环境的三大问题，每个问题的以如下方法呈现：一产生问题的原因；二是其危害，三应当采取的措施)2.2 具体教材双语的讲授。After a picture that shows the change of the temperature of the earth

4、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 conclusi

5、ons were reached about what the human should do to stop the earth from getting hotter At first a short English 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 ozonospher

6、e) after that, English film show harmful affects about the depletion of ozone layer. In the same way, what 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. ) put forward question after question to ful

7、fill the instruction of the content, such as a) what is acid rain; b)how it comes into being; 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

8、 students analyze the problem themselves, and solve the problem themselves, in which they were trained to analyze facts to find the answer, at the same time, English thinking pattern is applied. )3 exercises （课堂练习）我用英文设计了几个单项选择题和双项选择题复习巩固学生所学的教学内容，同时也通过作题，学生的英语阅读理解能力得到了锻炼。练习如下：1Choose the right answ

9、er from A, B, C and D: 1) Carbon dioxide is the main _in the atmosphere.A. gas that can form acid rain B. 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 dioxide B. carbon oxide C. sulfur dioxide D. C

10、FC3) Apart from the natural factors that damage the ozonosphere, the human beings break-down of ozone mainly refers to _. A. the release of carbon oxide B. the release of carbon dioxideC. the release of CFC D. the release of nitrogen oxide4) In the atmosphere, ozonosphere lies in the _.A. tropospher

11、e B. stratosphere C. mesosphere D. hydrosphere5) The acid rain in China is mainly sulfated acid rain because _.A. we burn wood for main energy B. we burn coal for main energyB. we have power station propelled by fire D. our power station propelled by water2. choose the two right answers from A, B, C

12、 and D:1) The artificial reasons for the increase of carbon dioxide in the atmosphere are:_.A. burning of fossil fuels B. construction of power stationC. deforestation D. the sea is polluted 2) The direct reasons for global warming to raise the sea level are:_.A. there will be more rivers B. more ra

13、infall and less evaporationB. ocean water expand due to the increase of temperatureC. melted polar ice makes the sea level rise3) The damage of the ozonosphere result in _.A. more people will have skin cancer. B. rainstorms in the whole worldB. global drought D. damage of the ecologic environment an

14、d agriculture4) The gases that will form acid rain are:_.A. carbon dioxide B. sulfur dioxide C. nitrogen oxide D. carbon oxide5) The affects that acid rain result in are:_.A. acidify the soil B. more people get skin cancer B. acidify water in the rivers and cause fish to die. D. decay in buildings a

15、nd culture relics.4. homework (课后练习)Answer the following questions according to the text: Part 1 global warming:6) 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)

16、 In what ways can the human beings increase carbon dioxide in the atmosphere?_10) How does the sea level rise? (there are 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

17、 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 generally cal