Learning about Language教学评价实录

Teaching Plan Unit4 Global Warming

Reading：The Earth is Becoming Warmer - but does it Matter?

Background information: Students: 56 senior high school students,Grade 2 Lesson duration: 40mins Class type: Reading

Teaching objectives: By the end of the lesson, students should be able to: Knowledge aims: a)master new words and phrases:come about, random, graph, fuel,

phenomenon, tend and so on. b)learn what is greenhouse gas amd greenhouse effect. Ability aim: a)

enhance the abilities of reading skills. b)

know some measures to mitigate the green house effect Emotion aim: a.

Stimulate students’love for the earth.

Teaching important and difficult points Important points a)

Let students learn more about the new words and learn the main idea and detail information of the passage. Difficult points 1).Develop students’ reading ability. 2).Enable students to talk about how to mitigate the green house effect. Teaching strategies: PPP, TPR, Communicative Approach, Audio-visual Method Teaching aids: multimedia Teaching procedure: Step 1 Pre-reading(4mins) 1.1 leading-in. Guessing game: green, house, greenhouse,greenhouse effect 1.2 background information Watch a video about greenhouse effect Step 2 While-reading 2.1 get the main idea(2mins)

Commonly speaking, we can get the main idea of a passage in three ways:

title and subtitles. √

the first and the last paragraph

read and make the conclusion

2.2 Intensive reading (7mins) T：As you can see in the screen, there is a graph below. You need to finish the graph after read the whole passage.

Step 3 Post-reading（15mins）

3.1Summary T:Well, you have done a great job. Next you’re going to finish the exercise according the information you have got in the passage or the given words. There is no doubt 1.________the earth is becoming warmer and warmer but there is a fierce debate over whether it will lead to a catastrophe or whether it will make life for human beings 2.________ (good)．

Many scientists like Dr Janice Foster believe that people 3.________(cause)the increase in the earth’s temperature through the burning of fossil fuels like coal，natural gas and oil 4.________ (produce)energy.Some of the byproducts are called“greenhouse”gases，of

which the most important one is carbon dioxide.These gases trap heat from the sun and therefore warm the earth，without which the earth 5.________(be)about thirty­three degrees Celsius cooler than it is.But increased amount of carbon dioxide means that more heat energy is trapped in the atmosphere 6.________(cause)the global temperature to go 7.________.As a result，it will lead to a rise of several metres in the sea level and the 8.________(disappear)of species.On 9.________other hand，scientists like George Hambley believe that any warming will be mild with few bad environmental 10.________(consequence)and more carbon dioxide is actually a positive thing. 1.that

2.better

3.have caused

4.to produce

5.would be

6.causing

7.up

8.disappearance

9.the

10.consequences 3.2 Free Talk(8mins) T: As all of you have known the disadvantage of global warming, what kind of measure have we taken to mitigate the green house effect? And what you can do to mitigate the green house effect global warming? Ss may say: plant more trees, Step 4 last section and homework(4mins) T show some methods about how to write the kind of problem-solving passage. And also T have given the beginning and ending of a passage and ask ss to finish the body. 1.提出问题。对现状、形势或困难进行描述，提出需要解决的问题。

2.分析问题。分析问题主要指分析问题形成的诸多原因,写作时要有条理,主次要分明。

3.解决问题。对所提及的问题,提出自己认为合适的解决方法、途径,并简要阐述其依

据,或者表明个人态度、阐述个人做法。

Recently the problem of global warming has aroused worldwide attention. The reason can be listed as follows. For one thing___________. For another_____________________.we should take a series of effective measures to cope with the situation. First of all,____________________. what’s more,_________________________. Last but not least,_______. I thing these measures will be useful and that we can mitigate the greenhouse effect.