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1、Unit 4 Amazing ScienceTopic 3 I dont think aliens can be found in space.Section DThe main activities are 1a and 4. 本課重點活動是1a和4。. Teaching aims and demands 教學(xué)目標1. Learn some new words and a phrase:beyond, separate, hand in2. Review the use of “modal verb + be + P.P.”3. Talk about our planet and livin
2、g things on other planets. . Teaching aids 教具多媒體課件/教學(xué)掛圖/錄音機/幻燈片. Five-finger Teaching Plan 五指教學(xué)方案Step 1 Review 第一步 復(fù)習(xí)(時間:7分鐘)通過圖片造句,復(fù)習(xí)本單元重點語法項目含有情態(tài)動詞的被動語態(tài),然后通過判斷句子正誤的方式鞏固Section C,導(dǎo)入新課。1. (多媒體展示一些圖片,學(xué)生們根據(jù)圖片內(nèi)容造句,該句子必須是“情態(tài)動詞+被動語態(tài)結(jié)構(gòu)”,復(fù)習(xí)本單元語法。)T:Hello! Boys and girls, in this topic we have learned a new
3、 grammar, the passive voice with modal verbs. Now, lets look at the screen. Make some sentences according to the pictures. Please remember that you should use “modal verb + be + P.P.” Do you understand?Ss:Yes. T:(多媒體呈現(xiàn)一個很臟的教室。) Here is a classroom. S1, can you make a sentence?S1:Yes. The classroom s
4、hould be cleaned every day. T:Good. Lets look at next one. (呈現(xiàn)一幅環(huán)境污染圖片。) S2, please?S2:The environment must be protected by us. T:Excellent. Next one. (呈現(xiàn)一輛壞了的自行車圖片。) S3, you please!S3:The bike should be repaired. T:Good. Next.(展現(xiàn)一幅小孩用臟兮兮的手吃蘋果的圖片。) Who can make a sentence?S4, can you? S4:Her hands s
5、hould be washed before eating apples.T:Right. Lets look at next one. (呈現(xiàn)一片被砍伐的樹林圖片。)S5:The trees shouldnt be cut down by people. T:OK, next. (展現(xiàn)科學(xué)家們正在認真做研究的圖片。)S6:Scientific research must be done carefully. T:You did very well. Have you mastered the new grammar?SS:Yes. 2. (多媒體制作幾句動漫的聲音。讓學(xué)生判斷波利說的上一節(jié)課
6、學(xué)過的關(guān)于火星的內(nèi)容是否正確。激發(fā)學(xué)生的興趣,達到復(fù)習(xí)的目的。)T:Boys and girls. Weve learned something about Mars. Do you still remember?Ss:Yes. T:Lets listen to what Polly says. Are her expressions about Mars right or wrong?Polly: Mars goes around the earth at a distance of about 228 million kilometers.Ss:No, you are wrong. Pol
7、ly: It is one fourth as big as the earth. Ss:No, its about half as big as the earth.Polly: Mars looks like a red and black ball. Ss:No, it looks like a red and orange ball. Polly: It is very beautiful. Ss:Yes. Polly: A person weighs 120 kilos on the earth, but only weighs 48 kilos on Mars. Ss:Yes, y
8、ou are right. Polly: The temperature on Mars is between -120 and 20. Ss:No, its between -138 and 28. Polly: It takes a spaceship from the earth about eight years to reach Mars when the two planets are closest to each other. Ss:No, eight months, not eight years. T:OK, boys and girls, you did very wel
9、l. As we know, Mars is the fourth planet from the sun in our solar system. This lesson, lets go on talking about solar system.Step 2 Presentation 第二步 呈現(xiàn)(時間:14分鐘)利用太陽系的圖片學(xué)習(xí)生詞,導(dǎo)入新課,呈現(xiàn)1a,完成1b。1. (出示教學(xué)掛圖太陽系,讓學(xué)生們從感官上認識太陽系,教師導(dǎo)入新課。)T:Boys and girls, just now we talked about Mars. Do you know how many plane
10、ts there are in the solar system?Ss:Yes. There are eight.T:Right. The solar system is like the home of the eight planets. Our planet, the earth, is the third planet from the sun. However, the solar system is a small part of the universe.(板書并要求學(xué)生理解。)universe T: Scientists have sent up spaceships to e
11、xplore other planets in the solar system. Whats more, some spaceships have gone beyond the solar system. (板書,講解并要求學(xué)生掌握。)beyondT: Scientists will do more research on the space. So boys and girls, you must study hard, and try your best to make a contribution to the research one day. Do you think so?Ss
12、:Yes, we will study hard. T:OK. Next, lets read the text to learn more about the solar system. 2. (學(xué)生打開課本,聽1a錄音并跟讀,回答下列問題。)T: Boys and girls, lets listen to the tape. Read after it, then answer the following questions:(幻燈片出示問題。)(1) Has anybody found life on other planets?(2) Whats called the solar s
13、ystem?(學(xué)生聽后回答問題,教師核對答案,必要時可再放一遍錄音。)3. (讓學(xué)生讀1a, 選出恰當?shù)臉祟}。然后完成1b。)T:Read 1a again. Choose the best title of the passage, then finish 1b。(學(xué)生完成后,核對答案。)T:Now, which one would you like to choose?Ss:Is There Life out There?T:Yes, good. Now look at 1b. Who can match the letters with their names according to
14、1a? S1:(B) the solar system(D) the earth(A) the universe(C) the sunT:OK, you did very well. Step 3 Consolidation 第三步 鞏固(時間:8分鐘)要求學(xué)生運用關(guān)鍵詞復(fù)述課文,鞏固1a。小組活動,完成2。1. (學(xué)生再讀1a,教師板書本課關(guān)鍵詞和短語。)T:Boys and girls, lets find out the key words and phrases of the passage. (板書)scientists, life, millions of years, on ot
15、her planets, the earth, seven, the solar system, universe, launch, beyond, discover, message, information, alone2. (根據(jù)板書的關(guān)鍵詞,引導(dǎo)學(xué)生復(fù)述課文。)T:Look at the key words and phrases on the blackboard. Can you retell the text?Ss:Lets have a try. T:OK. Life, millions of years. Ss:There has been life on earth for
16、 millions of years. T:On other planets. Ss:We havent found life on other planets yet. T:The earth. Ss:The earth is a planet and it goes around the sun. T:Seven. Ss:There are seven other planets that also go around the sun. T:The solar system, universe. Ss:The solar system is a small part of the univ
17、erse. T:Launch. Ss:Scientists have launched many spaceships to explore other planets in the solar system. T:Beyond. Ss:Some spaceships have gone beyond the solar system. T:Discover. Ss:However, no one has discovered any life in space yet. T:Message. Ss:Why has no one from other planets sent us a mes
18、sage?T:Information. Ss:Have they tried to send information to us?T:Alone. Ss:Are we alone, or is there life on other planets in space?T:Good. You did very well. After class you should read the passage again and again until you understand it well.3.(小組活動,完成2。)Step 4 Practice 第四步 練習(xí)(時間:10分鐘)將情態(tài)動詞的被動語態(tài)
19、運用于1a中的部分句型,輔以練習(xí),鞏固本單元重點語法及功能句型,完成3a和3b。鼓勵學(xué)生大膽表達,學(xué)以致用。1. (通過本話題內(nèi)容的拓展,復(fù)習(xí)總結(jié)本話題語法。)T: There are so many planets in space. But no one knows if there is life on other planets. Scientists dont know. We dont know, either. But do you want to discover the secret?Ss: Yes, we do. T: So what can be done to find
20、 out the truth?S1: More satellites must be sent into space. S2: More scientific research should be done. S3: Other planets may be visited in the future. (學(xué)生會有許多奇思妙想,要允許他們大膽表達,但及時提醒他們用情態(tài)動詞+被動語態(tài)的句型結(jié)構(gòu),然后總結(jié)他們的回答或及時記錄其中相關(guān)的句子,板書后總結(jié)語法。)More satellites must be sent into space. More scientific research shoul
21、d be done. Other planets may be visited in the future. modal verb + be + P.P.2. (出示練習(xí),鞏固含有情態(tài)動詞的被動語態(tài),并學(xué)習(xí)4中的生詞。)T: Now, please change the following sentences into the passive voice. Dont forget the modal verbs, and put them in the right places. (用幻燈片呈現(xiàn)以下題干,請5名學(xué)生在黑板上做改寫練習(xí)。其他學(xué)生同時在練習(xí)本上做。然后再用幻燈片依次呈現(xiàn)答案。師生核
22、對答案。)(1)We can see many stars in the sky on a fine evening. Many stars can be seen in the sky on a fine evening. (2)You may find life on other planets one day. Life may be found on other planets one day. (3)You should write the answers on a separate piece of paper.The answers should be written on a
23、separate piece of paper.(4)We should hand in our homework tomorrow. Our homework should be handed in tomorrow. (5)The human beings mustnt throw garbage into space. Garbage mustnt be thrown into space. (板書解釋畫線生詞及短語,并要求學(xué)生掌握。)separatehand in3. (復(fù)習(xí)本話題的語法重點和重要句型。完成3a和3b。)Step 5 Project 第五步 綜合探究活動(時間:6分鐘)小組活動,以本單元Space and Science為主題設(shè)置智力題,并根據(jù)其內(nèi)容與結(jié)果,完成4。
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