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选修6 Unit 4 Global warming 教学设计

The Second Period Reading

Teaching goals 教学目标

1. Target language 目标语言

a. 重点词汇和短语

compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build up

b. 重点句式

There is no doubt that the earth is becoming warmer. P26

Without the‘greenhouse effect’, the earth would be about thirty-three degrees Celsius cooler than it is. P26

They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. P26

2. Ability goals 能力目标

Enable the students to talk about the causes and effects of global warming.

3. Learning ability goals 学能目标

Help the students learn how to talk about the causes and effects of global warming and express ideas about what people should do about it.

Teaching important points教学重点

Help the students learn how to debate over the topic “We should do nothing about global warming.”

Teaching difficult points 教学难点

Enable the students to learn the writing skills of the text and get a better understanding of articles of this kind.

Teaching methods 教学方法

Listening, reading and group work.

Teaching aids 教具准备

A recorder and a computer.

Teaching procedures & ways 教学过程与方式

Step ⅠRevision

Check the homework.

Review the useful expressions about agreement and disagreement.

Show the students some pictures on the screen. The students have to give names of different energy sources relative to the pictures and deicide which energy sources are renewable and which are not. Then ask the students to tell the effects of using these energy sources. Step Ⅱ Pre-reading

Show a picture of greenhouse on the screen.

T: Now look at the picture. What is it in the picture?

S: A greenhouse.

T: Right. Who can tell me what it is used for?

Sa: A greenhouse is made of glass and is used for growing plants, especially during cold weather.

T: Yes, you are right. And how does it work?

Sb: The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.

T: Exactly. Thank you. But today we are not going to talk about greenhouse, we’ll talk about greenhouse gases. Have you heard about this before?

Sc: I know. In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane and water vapor.

T: That’s correct. Then what do you think greenhouse gases do?

Sd: Let me explain it. They trap heat from the sun and therefore warm the earth.

T: Yes. Last class we talked about the effects of burning fossil fuels. One of the effects is more and more carbon dioxide is being produced, which in turn increases the speed of global warming. Does it matter? What’re your opinions? Next we’ll read an article “THE EARTH IS BECOMING WARMER —BUT DOES IT MATTER?”

Step Ⅲ While-reading

Get the students to read the passage fast and meanwhile help the students form a good habit of reading.

T: What do you think will be talked abo ut at the sight of the title “THE EARTH IS BECOMING WARMER —BUT DOES IT MATTER?” Now please skim the passage to obtain a general idea of the whole passage. While reading, pay attention to the writing skills and if possible, divide the whole passage into several parts and summarize the main idea for each part. After a few minutes.

T: How many parts can this text be divided into?

T: Any different ideas? OK. Now let’s finish the form on the screen.

Show the form on the screen and let the students complete the form.

Main ideas of each part Writing techniques

Step Ⅳ Comprehending

Let the students read the passage again to find out the answers to the questions in Exercises 1 and 2.

T: Now let’s listen to th e tape. While listening, pay more attention to specific information. Then read the whole passage by yourselves. Try to find out the answers to questions in Exercises 1 and 2. You may work in groups.

Step Ⅴ Debate

Get the students to debate over the statement: We should do nothing about global warming. Let them work in groups of six to prepare it.

T: Now you are going to have a debate: We should do nothing about global warming. Please follow these instructions.

Put the following instructions on the screen.

● Get into groups of six. Decide which three in your group are going to agree with the statement (Group A) and which three are going to disagree with the statement (Group B).

● Group A discuss why they agree with the statement; Group B discuss why they disagree.

● Group A and B get together. Tell each other the reasons why agree or disagree with the statement.

T: We don’t have time to do it in class. Please finish it after class. Try to collect as much information as possible on the Internet and share it with the others in class. Next class I’ll get some groups to act out your debates.

Step Ⅵ Homework

1. Read the passage again and review the new words and expressions.

2. Prepare the debate in groups.

3. Preview Using Language ― WHAT CAN WE DO ABOUT GLOBAL WARMING？

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高中英语教案 . . Elicitation,MutualInteraction Interactivemultimediateaching Step1Revision Earth:notenoughrain,toomanycattle,cuttingdowntrees,strongwinds Air:smokefromfactories,powerstations,cars,chemicalrain,accidentsatpowerstations andfactories Water:wastefromfactoriesandcities Step2Presentation 1．Presentaseriesofimagesdepictingthenaturalbeautyoftheearth,（1）Readtheadditionalmaterialsaboutpollutionanddothereadingcomprehensionexercises.（2）Finishthereport. Thanksforattendingthisclass! _____________________________________________________________________________--__ 资料我国环境污染现状令人担忧 据专家估计，中国每年因环境污染造成的损失达到二千八百三十亿元人民币，其中，仅水污染一项，估计一年造成经济损失约五百亿元。 据香港《东方日报》报导，自六十年代至今，中国有环境监测的四百三十二条大小河流中，八成受到不同程度的水体污染，其中大江河经过城镇河段的占二成，支流受污染的占六成，全中国二千八百多个湖泊，凡能接纳城镇污水的，大多出现水体负氧化现象。由于地下水过度开采，京津沪大面积出现土地沉降一点五公尺至二公尺，桂林溶岩区三十米地下水重金属超标十至二十倍。 大气污染造成的经济损失约为二百亿元，由于城市燃煤、工厂排放废气及汽车死气污染，大气中二氧化硫、一氧化碳等有毒悬浮微粒弥漫在城市上空，空气污染导致许多城市肺癌死亡率增至万分之二，全国酸雨覆盖面积已达百分之三十，所有这些损失加起来也等于二百亿元。 而生态环境破坏和自然灾害造成的损失估计高达二千亿元，森林覆盖率由四九年的三成左右，现已下降至不足一成四，草原的严重退化，水土流失面积达一百五十五万平方公里，占国土面积的百分之十六。 同时，城镇建设却仍以每年侵占一百五十万公顷土地的速度发展，破坏自然生态平衡，加上自然灾害带来的损失，每年至少损失二百亿元。 其他污染如固体废物排放、噪音污染等造成的损失也高达一百三十亿元。 专家分析表示，造成环境污染引起的经济损失原因众多，但国家工业规划布局失误，调控措施不力和公民环保意识不强是主要原因。 我的体会； 学习了该教案后，我总结体会两点。

人教版高中英语选修八unit1第1课时教案

高二英语选修八unit 1 第一课时Warming up & reading Teaching Goal: Enable the Ss to learn sth about the USA Enable the Ss to talk about some places with frequent english Teaching important and difficult points Practice some important words and expressions Part 1 Warming up Look at the warming-up part on page 1 and fill in the map(refer to the ppt.) What do you know about the USAlet’s have a small test. 1. Which flag is American flag 2. Which city is the capital of the USA A.New York B.Washington C.Los Angeles 3. Which stands for the USA National Emblems（国徽） 4. How many states are there in the USA doesn’t belong to the USA Part 2 Reading. Fast reading state in the USA has the largest Population 2. Why is California called the most multicultural state in the US many kinds of people are mentioned in this text Detail reading

高中英语全英教案

高中英语教案I. Teaching focus the damage caused to the world and figure out the reasons. ways to stop the earth from being polluted by discussing in groups. approaches Elicitation, Mutual Interaction aid Interactive multimedia teaching process Step 1 Revision 1. Check note-making Earth: not enough rain, too many cattle, cutting down trees, strong winds Air: smoke from factories, power stations, cars, chemical rain, accidents at power stations and factories Water: waste from factories and cities Step 2 Presentation 1． Present a series of images depicting the natural beauty of the earth, then the pollution. Highlight the sharp contrast between them. Guide the students to the conclusion: The earth used to be much more beautiful than now; the earth is in danger due to the increasing pollution. 2． Study the map on the textbook, then scan the passages to figure out where on the world atlas the damage has happened. Encourage the students to give out their point of view toward the pollution issue. Step 3 Audiovisual Learning The students watch a video on the text, then do the following true or false questions. 1. Many parts of the world with large population and plenty of crops have become deserts. T 2. Land may become poor if farmers do not limit the numbers of their cattle. T 3. Good soil is gradually lost these days as trees are being cut down. T 4. Air pollution and water pollution are the two causes of the problem that many parts of the world have become deserts. F 5. Chemicals in the smoke from power stations can travel hundreds of miles in the