U2T2SC教學設計

1、U2T2SCSection C. Material analysis本課是第二單元第二話題的第三課時，主活動是1a和3。通過閱讀1a，進一步學習各種污染對地球造成的危害和造成這些污染的原因，培養(yǎng)學生通過圖片預測文章大意的能力，其中出現了很多關于環(huán)境的專業(yè)術語，需要學生了解。1b是訓練學生運用不同的閱讀策略完成不同的任務，如：通過觀察1a中的圖片匹配相應的標題，再閱讀文章，給每段話選擇標題；另外，繼續(xù)訓練學生通過語境，找出單詞指代的內容；最后在理解課文的前提下，歸納文章的大意。1c培養(yǎng)學生通過精讀文章，學會用簡單的詞句做筆記，再通過1c表格中的內容簡要復述文章大意。2是培養(yǎng)學生的資源策略。要求學

2、生合理地運用網絡資源查找與環(huán)境危害相關的信息，然后進行小組討論，并要求學生做好筆記，為任務3做準備。3要求學生運用這些信息，在1c和2的基礎之上進行寫作練習，教師應強調銜接詞在作文中的重要性。由于課堂上不方便完成2，因此，可將2和3安排為課后作業(yè)。通過讀寫的結合訓練，引導學生關注全球環(huán)境的現狀，意識到環(huán)境保護的重要性，樹立正確的環(huán)保觀念。.Teaching aims1.Knowledge aims： 掌握本課的重點詞匯和短語，初步感知定語從句。進一步學習各種污染對地球造成的危害和造成這些污染的原因。2.Skill aims: 能讀懂有關環(huán)境問題的文章。能根據不同的閱讀目的，運用簡單的閱讀策略獲

3、取信息。能正確運用網絡資源獲取需要的信息。能用英語書面的形式表達環(huán)境問題的成因及危害。3.Emotional aims: (optional) 通過學習，了解環(huán)境現狀，幫助學生樹立綠色環(huán)保意識。4.Culture awareness: (optional) 了解各種環(huán)境問題，如臭氧空洞，溫室效應等，意識到環(huán)境問題的嚴峻形勢。. The key points and difficult points1. Key points: Words and phrases: hole, form, rise, oxygen, ozone layer, radiation, directly, carbon

4、 dioxide, blanket, escape, the greenhouse effect, refer during this period, take away, pass throughSentences: (1) Forests have become deserts, so more and more sorts of animals and plants are disappearing. (2) As a result, many rivers and lakes are now dead.(3) Too much harmful radiation from the su

5、n passes through the hole and reaches the earth directly.(4) It causes the level of the oceans to rise and the climate of the earth to change.(5) When it rains or when the wind blows, the earth is taken away. (6) The heat from the sun cant escape, so the temperature is rising.Grammar: indefinite pro

6、noun and adverb2. Difficult points： 理解有關環(huán)境方面的專業(yè)術語。能讀懂與環(huán)境問題相關的科普類文章。能運用所學知識，寫出談論環(huán)境現狀的文章。. Learning strategies能在閱讀不同體裁的材料時，運用不同的閱讀策略獲取信息。 善于利用插圖預測科普類文章的內容。 能合理運用網絡資源，拓展寫作思路和開拓視野。 恰當使用連接詞，使自己的作文流暢，有邏輯層次。. Teaching aids與環(huán)境相關的圖片；單詞卡片（如O2/ oxygen; ozone layer; radiation等）；錄音機；國際臭氧層保護日宣傳動畫片等。. Teaching pro

7、cedures Stage(time period)InteractionpatternsTeacher activityStudent activityRemarks1Getting students ready for learning and revision（2 mins）Class activityCheck the Ss homework:Let the Ss give a report about their own bad habits and how to make the campus better.T: Hi, everyone. Last class, we have

8、talked something about the school environment. Some of us may have some bad habits, and these habits can affect our campus. What can you do to make our campus look better? Please share your opinions with us.S1: I often forget to turn off the lights when I leave the classroom. I think it doesnt matte

9、r if the lights are on for a little while. And I often waste some paper after I only use a small part of it. I like to use new paper. But now I realize these habits are really bad ones, so I hope every one of us can save energy from now on.T: Very good. If you can give more suggestions, it will be b

10、etter. Next one.S2:I always make loud noise between classes. It disturbs others. I often throw rubbish around in a corner if there is nobody. But from now on, I will remember to get rid of the bad habits. If everyone can follow the school rules, our campus will become more beautiful. S3: T:Great.Giv

11、e a report about your own bad habits and how to make the campus look better.S1: I often forget to turn off the lights when I leave the classroom. I think it doesnt matter if the lights are on for a little while. And I often waste some paper after I use only a small part of it. I like to use new pape

12、r. I hope every one of us can save energy from now on.S2:I always make loud noise between classes. It disturbs others. I often throw rubbish around in a corner if there is nobody. But from now on, I will remember to get rid of the bad habits. If everyone can follow the school rules, our campus will

13、become more beautiful. S3: 用報告的形式讓學生在課堂上反思自己平時的言行，有助于學生更好提升自己，培養(yǎng)“愛護環(huán)境從我做起，從小事做起”的意識。2Lead-in(3 mins)Class activity Play the cartoon video about protecting the ozone layer. Let the Ss watch and discuss what they have learnt from it. Take some notes if necessary.T: Here is a video about protecting the

14、 ozone layer. Lets watch it carefully. Then I will ask you something about it. .T: Now Lets figure out something about ozone layer. Is ozone layer important or unimportant?Ss: Its very importantT: Can the ozone layer protect us?Ss: Yes.T: What happened to it now?Ss: There is a big hole in the ozone

15、layer.T: Yes. Whats the effect of it?Ss: Its harmful to all the living things, especially to humans for it does harm to our eyes and skin.Watch the video and discuss what they have learnt from it. Take some notes.Ss: Its very importantSs: Yes.Ss: There is a big hole in the ozone layer.Ss: Its harmfu

16、l to all the living things, especially to humans for it does harm to our eyes and skin.通過播放視頻，讓學生了解每年的9月16日是國際臭氧層保護日，關注臭氧層的現狀。該宣傳片是卡通版，不是枯燥的科教片，能夠很好地吸引學生的注意力。如果條件不允許，教師可以從課外書籍上選讀一些與環(huán)境相關的文章。3Pre-reading (5 mins)Class activityClass activityStep 1: Show two pictures of ozone layer and more carbon dioxi

17、de. Introduce them to the Ss briefly to teach the new words. T: Right. Ozone is a special kind of oxygen. It can protect the earth. Now people produce lots of harmful chemicals into the air. They cause a big hole in the ozone layer. So the radiation can pass through the hole and reach the earth dire

18、ctly. (Show the picture of more carbon dioxide and lead the Ss to learn the new words in the same way.)Step 2: Guide the Ss to predict the main idea of the passage by the given pictures.T: Now look at the pictures on Page 39, can you guess what we will learn in the passage.S1: Something about pollut

19、ion.S2: Traffic pollution / air pollutionS3: Ozone layerS4: Cutting down treesS5: Carbon dioxideLook at the pictures and learn the new words according to teachers descriptions.Predict the main idea of the passage by the given pictures.S1: Something about pollution.S2: Traffic pollutionS3: Ozone laye

20、rS4: Cutting down treesS5: Carbon dioxide在觀看宣傳片后，再介紹有關臭氧層和溫室效應的英文詞匯，學生容易理解，也容易掌握。培養(yǎng)學生通過觀察圖片，預測課文內容的能力，這有助于學生在日常閱讀中，快速獲取信息。4While-reading (20 mins)Individual workIndividualworkGroup workStep 1: Let the Ss match the pictures with the titles in 1 of 1b, and then read paragraphs 2-6 quickly and write do

21、wn the proper title in front of each paragraph. T: Excellent. Now read 1a quickly, match the pictures with the titles in Exercise 1 quickly.S1: Picture 1 is traffic pollution.S2: Picture 2 is the ozone layer.S3: Picture 3 is fewer trees.S4: Picture 4 is more carbon dioxide.S5: Picture 5 is factory p

22、ollution.T: Right. Now please read paragraphs 2-6 quickly, choose a title for each para and write down in front of it. T: OK, lets check the answer together.S6: Para 2 is fewer trees.S7: Para 3 is traffic pollution.S8: Para 4 is factory pollution.S9: Para 5 is the ozone layer.S10: Para 6 is more car

23、bon dioxide.Step 2: Lead the Ss to read paragraph 1, 5 and 6, find the words in Exercise 2, 3 and 4 and guess the meanings of them according to the content. T: Great. Now read paragraph 1, 5 and 6, find the words in Exercise 2, 3 and 4 and guess the meanings of them according to the content. T: What

24、 does “our planet” mean in this para?S1: It means “the earth”.T: What does the word “blanket” refer to? S2: Carbon dioxide around the earth.T: What does the word “it” in Para 5 refer to?S3: It refers to “O3”.Step 3: Let the Ss read 1a carefully, choose the best title for the passage and finish 5 in

25、1b. Then complete the notes in 1c according to 1a.T: Please read the passage and choose the best title for the passage.T: OK. Have you got the main idea of the passage?S4: Yes. Environmental problems.T: Right. Try to finish the notes in 1c according to the passage. Pay attention to use the key words

26、 when taking notes. You can discuss with your group members.T: OK. Have you finished? Whats the effect of traffic pollution?S5: People have health problem.T: Whats the effect of factory pollution?S6: Factories make the river and lakes dead.S7: T: Thats right. You did very well.Match the pictures wit

27、h the titles in 1 of 1b, and then read paragraphs 2-6 quickly and write down the title in front of each paragraph. S1: Picture 1 is traffic pollution.S2: Picture 2 is the ozone layer.S3: Picture 3 is fewer trees.S4: Picture 4 is more carbon dioxide.S5: Picture 5 is factory pollution.S6: Para 2 is fe

28、wer trees.S7: Para 3 is traffic pollution.S8: Para 4 is factory pollution.S9: Para 5 is the ozone layer.S10: Para 6 is more carbon dioxide.Read paragraph 1, 5 and 6, find the words in Exercise 2, 3 and 4 and guess the meanings of them according to the content. S1: It means “the earth”.S2: Carbon dio

29、xide around the earth.S3: It refers to “O3”.Read 1a carefully, choose the best title for the passage and finish 5 in 1b. Then complete the notes in 1c according to 1a.S4: Yes. Environmental problems.S5: People have health problem.S6: Factories make the river and lakes dead.教師在安排1b的閱讀任務時，要注意以下兩點：1.引導

30、學生用不同的閱讀策略完成不同的閱讀任務。2.任務的安排要有層次性，從易到難。訓練學生通過上下文猜測單詞指代的內容，有助于學生更好的理解課文。該環(huán)節(jié)的三個小任務是用相同的方法獲得信息，因此，可以一次性完成。歸納文章中心思想，是學生較為頭疼的題目，因此，如果文章較長的話，最好把它放到最后一個環(huán)節(jié)處理，降低難度，教師要引導學生用排除法作出正確的選擇。5Post-reading (12 mins)Individual work, Group work and class activityPair work Step1: Let the Ss read 1a carefully, find out th

31、e difficult points, and list them on the Bb. T: Read 1a again and find out the difficult points. Please collect them in groups and list them on your small Bb.T: OK, now look at the points of Group One on the Bb. Look at this one “What does the word “others” refer to?” Who can deal with it?S1: Someth

32、ing we have done.T: OK, look at this sentence “the earth is taken away”. Who can translate it?S2: It means “泥土被帶走了” in Chinese.Step 2: Guide the Ss to retell the passage according to the first para, last para and the notes in 1c.T: Now work in pairs. Try to retell the passage according to the first

33、para, last para and the notes in 1c. T: Now who can have a try?S1: Since humans lived on the earth, we changed the earth a lot. Something is good while something is bad. There are fewer trees in the world. People cut down them, so forests become deserts and animals and plants are disappearingS2Read

34、1a carefully, find out the difficult points, and list them in the small Bb. S1: Something we have done.S2: It means “泥土被帶走了” in Chinese.(The Ss need to take notes while the teacher is giving some explanations.)Work in pairs, try to retell the passage according to the first para, last para and the no

35、tes in 1c.S1: Since humans lived on the earth, we changed the earth a lot. Something is good while something is bad. There are fewer trees in the world. People cut them down, so forests become deserts and animals and plants are disappearingS2本環(huán)節(jié)具體操作說明：1.學生在組內歸納好本組存在的問題。2.教師任意選擇一組作為主講，在講解過程中，仍然遵循先讓學生

36、解答、教師補充的原則。3.再補充講解其他組剩下的問題，相同的問題不作重復講解。4.最后老師將重點板書到黑板上。6Summarizing and assigning homework(3 mins)Class activityStep 1: Let the Ss summarize what they have learned in class.T: Now, lets go over what you have learned today, including words, phrases and sentences. And each student has to present one.S

37、1: oxygen S2: radiationS3: carbon dioxideStep 2: HMK: Let the Ss search the Internet for more information about environmental problems and effects. Discuss the information in groups and take notes. Then write a passage according to their notes and 1c.T: OK, after class, search the Internet for more informa