Saving the earth
The First Period
Teaching Aims：
1.Train the students’ listening ability．
2.Improve the studens’speaking ability by talking about nature ecology and the environment．
3.Learn and master some useful expressions for supporting an opinion．
4.Help the students to know something about the pollution．
Teaching Important Points：
1．Improve the students’speaking ability．
2．Improve the students’listening ability．
3．Help the students to learn to support an opinion．
Teaching Difficult Points：
1．How to improve the students’speaking and listening abilities．
Teaching Methods
1．Listening-and-answering activity to help the students go through the listening material．
2．Discussion to make the students practice supporting an opinion．
3．Individual，pair or group work to make every student work in class．
Teaching Aids：
1．the multimedia
2．a tape recorder
3．the blackboard
Teaching Procedures：
Step I Greetings
Greet the whole class as usual．
Step II Warming up
Show the pictures that are before and after polluted on the screen．. Let the Ss compare the difference of these pictures. Then read the unit title, ask the Ss: Is it true that we are damaging the only earth while we are enjoying our life? Look at the 6 pictures,(SB page 65) work in groups of four to talk about them. Answer the questions below the pictures.
T： Which problem do you think is the biggest one facing the earth?
S：I think it is the water pollution．Because if water is polluted．People will not be able to get clean water to drink；therefore，many people will get sick．It’s terrible．
S：I think the air pollution is the biggest problem．Because if the air is polluted， there will not be clean air for us to breathe．Everybody will get terrible diseases．
T: Now，who can tell us what causes these problems?
S：I think it is because people pay no attention to our environment．They pour waste water into rivers，1akes and seas without cleaning it．
S：The air pollution is caused by the factories．People build factories to develop the industry，but they never pay attention to controlling the pollution．The harmful smoke should be made harmless before it goes into the air，but few factories would like to do so because this will cost much．
T：Very good．Now，who knows what we can do to solve these problems?
S：I think our government should pay more attention to environmental protection．They should check the factories as often as possible to make sure they don’t pour waste water into rivers or lakes and make sure they don’t let harmful smoke go into the air．
T：Good idea．Now，please open your books and turn to Page 65．There are six pictures in Warming up．We have just talked about two of them．Now，work in groups of four to talk about the other pictures．Answer the questions below the pictures．
(A while 1ater，ask some students to act out．)
Step III Preparation for Listening and Listening
T：Very good．I think you’re known something about our environment.
Now，please turn to Page 66．Look at the picture in Listening．What can you see?
Ss：A person is making a speech to the audience．
T：Can you guess what speech she is giving?
Ss：Maybe about our earth．
T：OK．Now，let’s listen to the tape．I’ll play it twice for you．Listen carefully
to answer the questions in Part 1．
(Play the tape twice for Ss to listen and write down their answers．Then ask some students to read out their answers．Check with the whole class．The teacher says the following．)
T：Good．You’re done very well. But from the passage we know that she hasn’t finished her speech．What do you think she wi
(Play the tape twice for Ss to Listen and write down their answers．Pause the tape if necessary. Then ask several students to read out their answers．)
T：Now，let’s listen to the tape again to check your answers．(Play the tape once more and then check the answers with the whole class．)Good．P1ease think a bout what the speaker will say next．You call use what you have heard on the tape to predict what will come next．Make an outline like the one in the table and then write down what you think the speaker will say．You can work in pairs or groups of four as you like．
(A moment 1ater，ask some students to read out their paragraphs and compare different speeches to choose the best one．)
T：Well done! We’ve talked much about pollution．We know that pollution is a big problem facing the earth．But why can’t we stop the pollution? Why doesn’t our government shut down the factories that pollute the environment badly? Who knows?
S：I think our government must have its own opinion．Maybe they think the factories are more important than the environment．Because the government can get lots of money from factories．If they shut the factories down ,it will not be able to get so much money．And this is not good for the development of the city or town.
T：Yes．Different people have different opinions．They may not agree with one another．So sometimes it’s very hard to make a decision and to make a change．For example，we know that coal is a valuable resource that can be used to produce energy，but it also causes serious pollution．What should we do with it? (Ss may have various answers．) You see，you don’t agree with each other．Now，we need to have a meeting to discuss this problem．Please work in groups of five．You should play different roles：a businessman．a scientist. a local citizen，an environmentalist and a local leader．Different people have different opinions．(Every person has his／her own opinion．) Please discuss the issue first and then the local leader should summarise and make a decision．You can have a look at the table and the useful expressions in Speaking Part before you begin your discussion．They’re very helpful．
(Give the students enough time to have a discussion and then ask the students who play the role of the local leader to read out their decisions．Compare them and choose the best decision．)
Sample dialogue：
A：Today we are here to decide whether we should burn the coal．Please tell us whatever you think．
B：I think we should burn the coal．
C：But burning coal causes too much pollution to our environment．1t pollutes the air badly. If nothing is done to stop its pollution to our earth<,/FONT>
管理员评论：同步教案，很好。
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