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新人教版高中英語必修3Unit 4 Space Exploration-Reading For Writing教學設計一
另一方面，其余的人反對這個計劃，因為它可能會導致一些不好的影響。7.I hold the belief that space exploration not only enable us to understand how the universe began but also help us survived well into the future.我堅信探索太空不僅能夠使我們了解宇宙的起源而且能夠幫助我們更好地走進未來。8.I think we should spend more time and money exploring space so as to provide new and better solutions to people's shortterm and longterm problems.為了給人類的短期和長期問題提供更新和更好的解決方法，我認為我們應該花更多的時間和金錢來探索太空。9．From my point of view，it is wrong of young people to depend on their telephones too much，which may do harm to both their physical and mental health.在我看來，年輕人過度依賴手機是不對的，因為它們可能會對他們的身心健康都有害。最近你班同學就“人類是否應該進行宇宙探索”這個問題進行了激烈的討論。有人認為，探索宇宙不僅讓人類更好地了解宇宙的發(fā)展，還可以用來指導農(nóng)業(yè)生產(chǎn)，以及把一些探索太空的高新技術用于現(xiàn)實生活；也有一些人認為探索太空花掉了大量的人力物力；影響了人們的生活水平。請你根據(jù)以下情況寫一篇報告并發(fā)表自己的觀點。注意：1.寫作內(nèi)容應包括以上全部要點，可適當發(fā)揮，使上下文連貫；
新人教版高中英語必修3Unit 5 The Value of Money- Discovering Useful Structure教學設計
Step 3 Meaning1. 過去將來時表示從過去某一時間來看將要發(fā)生的動作或存在的狀態(tài), 常用在賓語從句中。一般由“would/should +動詞原形”構成。She hoped that they would meet again someday. 她希望將來有一天他們能再見面。2. was/were going to+動詞原形: 表示過去將要發(fā)生或很有可能發(fā)生的動作, 常用于口語中, 表示預言、意圖或者打算等。He was going to start work the following week. 他打算下星期開始工作。3. was/were about to do: 常用來表示即將發(fā)生的動作, “剛要/正要做……”。注意該結構不與任何時間狀語連用。I felt that something terrible was about to happen. 我感到某種可怕的事情即將發(fā)生。4.was/were to do: 表示“曾計劃做某事”, 如果表示“本來計劃做某事, 動作沒實現(xiàn)”, 則需用 “was/were to have done”。She said she was to have told me about the accident. 她說她本來想告訴我關于事故的事。5.Start, go, come, leave, see, meet等動詞的過去進行時: 表示就過去某一時刻而言即將發(fā)生的動作。She was coming later. 她隨后就來。I had just put on my overcoat and was leaving to visit a friend of mine. 我剛穿上外套要去看我的一個朋友。
新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking＆Talking教學設計
4. A：We’d like to have someone to say a word at the beginning to welcome the group.B：↙Who?A：We thought that you or Dr.Johnson might do it.B用降調(diào)說Who，其意思是問，對方想讓誰在開場時致歡迎詞。Step 6 Pronunciation---Practice1. Listen to the short conversation and mark the intonation with ↗, ↙ or ↙, ↗. Then discuss with a partner what they intend to convey by using different intonation.Owner: You know what ?↗ It’s a million-pound bank note↙.Waiter 1: Really ?↗(question)Waiter 2: Really !↙(unbelievable and surprised)Waiter 3: Really ?!↙↗(first question then surprised)2. Listen to the conversations. Underline the parts that are stressed and mark the intonation. Then talk about the implied meanings of the responses with different intonations. Listen again and repeat.1) Henry: It’s a nice suit.Owner: Oh, it’s perfect!↙(The intonation means it is very suitable for Henry.)2) Henry: Well, that’s very kind of you.Owner: Kind, sir ?↗(what you said is not right) No, it’s kind of you. You must come whenever you want and have whatever you like. Just having you sit here is a great honour !!↙(welcome you to come again)3)Henry:Well, to be honest, I have none. Oliver:(happily) What luck!(excited) Brother↗, what luck!↙(It means “Didn’t you hear it?”)Henry: Well, it may seem lucky to you but not to me!↗(angry) If this is your idea of some kind of joke, I don’t think it’s very funny. Now if you’ll excuse me, I ought to be on my way.↙(If so, I would leave.)Roderick: Please don’t go↙...(hope Henry can wait for a moment)Part B Viewing and Talking---Describe people’s changing attitudes in a film clipStep 1 Before-listening---Tell the filmYou are going to watch part of the film The Million Pound Bank Note. Look at these photos and guess what happens in the film.
新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking教學設計
Step 4: Listen again and decide if the following statements are true (T) or false (F).1 It was the first time Chen Liyan's story was reported. T口 F口2 Chen found 10,000 yuan in a small plastic bag in Taiyuan railway station口 F口3 Wang Zheng apologized to Chen because he couldn't offer her more money. T口 F口4 Chen took out a large loan to cure her daughter, T口 F口5 Wang set up a fundraising website for Chen's daughter after Chen told him about her situation. T口 F口Step 5：After listening, discuss the questions.1 What kind of person do you think Chen Liyan is?Chen Liyan is generous and honest because she returned a large sum of money to the owner.2 Did Chen return the money because she didn't need it?No. She returned the money because it was the right thing to do. Evidence for this is that she refused to accept the reward money because she felt that it had not been earned. 3 Is it common for people to do what Chen did?It depends on the culture. In some countries it is quite common to return money that has been found. In other countries, people believe "Finders are keepers!" 4 How did Wang Zheng feel about the return of his money?He must have been very happy and relieved to have gotten his money back. We know this because he thanked Chen repeatedly and even offered her a reward.5 Why did Ma Dongbao tell Wang about Chen's family?He must have had great sympathy for Chen and her daughter and wanted to help them.'We know this because he arranged help for them. 6 How did the news reporter feel about Chen's actions?The news reporter felt that it showed that money wasn't the most important thing in life. We know this because the reporter told us that this is what Chen believes. and then said, “that's a great attitude to take."
新人教版高中英語必修3Unit 5 The value of money-Reading and Thinking教學設計二
? Could you offer me some kind of work here?? I don’t want your charity, I just want an honest job.? Careless: I landed in Britain by accident.Step 7:Consolidation.? Find Henry? Roderick and Oliver were I .making a bet when they saw Henry, a poor young man. ? Know Henry? About a month ago, Henry was sailing and later he found himself carried out to sea by a strong wind. Fortunately, he 2.was spotted by a ship. And it was the ship that brought him to 3.England? Offer money to Henry ? Oliver and Roderick gave Henry a letter and told him that there was money in it. They 4.persuaded him to accept it, and made him 5.promise that it wouldn't be opened until 2 o'clock.Step 8：Language pointsa large amount of: a large quantity of; a great deal ofe.g. They bought a large amount of furniture before they moved their new house.make a bet: make an arrangement to risk money, etc. on an event of which the result is doubtful.e.g. We made a bet on the result of the match.permit sb to do something: allow somebody to do somethinge.g. My mother doesn’t permit me to ride in the street after it rained.by accident: as a result of chancee.g. I only found it by accident.stare at: look at somebody or something with the eyes wide open in a fixed gaze( in astonishment, wonder, fear, etc)to be honest: to tell you the truth; to be franke.g. To be honest, I don’t think we have a chance of winning.Step7 Homework:What do you think will happen to Henry? Will the bank-note help him or get him into trouble?
新人教版高中英語必修3Unit 5 The Value of Money-Reading and Thinking教學設計一
Everybody wants to get wealth.In today’s material world,making money or becoming wealthy symbolizes a person’s success and capability. Many people just make every effort, pay any price to attain greater wealth. With money,they can buy nice, large apartments in nice neighborhood. With money they can own luxurious cars. Wealth seems to bring all happiness in life.But is wealth the only road to happiness? Not really. There are many things in the world, which are beyond the means of money, such as friendship, love, health and knowledge. People are so preoccupied with struggling for money that they have no time or would not take the time to form or maintain friendship. What happiness can they feel living as lonely miserable creatures without love or friends in the world even if they accumulate tremendous wealth?In my opinion, people can’t do anything without money, but money is not everything. What money will bring you depends on your personal belief and goal in life. If you are kind enough to help others, especially the poor, money is a good thing to you. With it, you can do much more for the benefit of people and your country, and it will add to your own happiness. If you want money just for your own needs, you’ll never be satisfied or happy. In a word,you should have money spent for more people. Only then can money be the source of your happiness.Step 8 Homework4 students in a group, one acts Roderick, one Oliver, one servant and the fourth one acts Henry Adams, then listen to the tape, pay more attention to the difference between American English and British English in pronunciation, stress, tone.
新人教版高中英語必修3Unit 5 The Value of Money-Reading for Writing教學設計二
2. 您能看到, 我頭發(fā)太長了。You can see that my hair is much too long.3. 無論什么時候, 只要您想回來就回來。Please come back whenever you want.4. 您僅有很少的頭發(fā)要理! You only have too little hair to cut !5. 為您服務是我的榮幸！It is my honour to serve you!Step 9 Writing(Henry is walking down the street when he sees a sign for a place that cuts hair. He decides to have it cut. )H=Henry B=BarberH: Good afternoon, I’d like to have my hair cut, if I may. (The barber looks at Henry’s hair and continues cutting another man’s hair. ) Er, I’d really like a haircut. As you can see it’s much too long. B: (in a rude manner) Yes, I can see that. Indeed, I can. H: Fine, well, I’ll have a seat then. (He sits in one of the barber’s chairs. The barber turns to look at Henry. )B: It’s quite expensive here, you know! Are you sure you can afford it?H: Yes. I think so. (After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B: Why Mr. . . (looks shocked)H: Adams. Henry Adams. I’m sorry. I don’t have any change. B: Please don’t worry! (wearing a big smile) Nothing to worry about! Nothing at all! Please come back whenever you want, even if you only have too little hair to cut! It will be my honour to serve you!Step 10 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Are all the elements of a play included and in good order ?2. Do the character use suitable language ?3. Are the stage directions clear and useful ?4. Is the plot clear and exciting enough ?
新人教版高中英語必修3Unit 5 the value of money-Reading For Writing教學設計一
【參考范文】Narrator：(Henry is smiling as he leaves the restaurant. As he is walking down the street, he sees a sign for a place that cuts hair. He decides to get it cut. )H＝Henry；B＝Barber；R＝rude manH：Good afternoon, I'd like to get a cut, if I may. (The barber looks at Henry's hair and continues cutting another man's hair. )Er, I'd really like a haircut. As you can see it's much too long. B：(in a rude manner) Yes, I can see that. Indeed, I can. H：Fine, well I'll have a seat then. (He sits in one of the barber's chairs. The barber turns to look at Henry. )B：It's quite expensive here, you know！Are you sure you can afford it?H：Yes. I think so. (In comes the rude man. )R：Hey you there. I need a haircut quickly. Can you do me straightaway?B：All right, then, get in the chair and I'll see what I can do. R：Thank you. (sits down in one of the barber's chairs)H：Excuse me, but I was here first. Aren't you going to do my hair first?B：This man's in a hurry. H：Well so am I！I insist that you cut my hair first. B：OK, but I'll have to be quick. This gentleman is waiting. H：Thank you. (They both become quiet. After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B：Why, Mr . . . (looks shocked)H：Adams. Henry Adams. I'm sorry, I don't have any change. R：You're that Mr Adams! Well，I'm glad I waited or I might never have known it was you. B：Why, Mr Adams, please don't worry！(wearing a big smile) Nothing to worry about！Nothing at all!Please come back any time, even if you only need too little hairs cut！It will be my honour to serve you!
人教版高中歷史必修3古代中國的發(fā)明和發(fā)現(xiàn)說課稿
一、說教材（一）、教材內(nèi)容《古代中國的發(fā)明和發(fā)現(xiàn)》是人教版高中歷史必修三第三單元第一課內(nèi)容，本課教材主要從五個方面的典型事例向學生介紹了古代中國幾千年的科技成就。本課一方面展示了古代中國人民的勤勞智慧以及對世界文明發(fā)展作出的巨大貢獻，另一方面也提出了一個重大問題引起學生的思考，即造成中國科技在近代落后的原因是什么。此外、本課在教材中具有承上啟下的地位和作用，前承中國傳統(tǒng)文化主流思想，后啟現(xiàn)代中國科學技術的發(fā)展。根據(jù)課標要求和教材內(nèi)容，我將本課的三維目標確定如下：（三）教學目標（1）知識與能力：掌握中國古代科技進步的基礎知識，特別是四大發(fā)明。認識古代中國四大發(fā)明對世界文明發(fā)展的貢獻，以及取得重大成就的原因。⑵過程與方法：通過指導學生課前閱讀課本，在課堂上進行問題探究、實驗體驗以及歷史比較，學會總結歸納。
人教版新課標高中物理必修2生活中的圓周運動說課稿3篇
（一）地位《生活中的圓周運動》這節(jié)課是新課標人教版《物理》必修第二冊第5章《曲線運動》一章中的第7節(jié)，也是該章最后一節(jié)。本節(jié)課是在學生學習了圓周運動、向心加速度、向心力以后的一節(jié)應用課，通過研究圓周運動規(guī)律在生活中的具體應用，使學生深入理解圓周運動規(guī)律，并且結合日常生活中的某些生活體驗，加深物理知識在頭腦中的印象。（二）教材處理教材中的“火車轉彎”與“汽車過拱橋”根據(jù)學生接受的難易程度,順序作了對調(diào)，并把最后一部分“離心運動”放到下一節(jié)課處理。（三）教學目標1．知識與技能目標（1）進一步加深對向心力的認識，會在實際問題中分析向心力的來源。（2）培養(yǎng)學生獨立觀察、分析問題、解決問題的能力，提高學生概括總結知識的能力。（3）了解航天器中的失重現(xiàn)象。2．過程與方法目標（1）學會分析圓周運動方法，會分析拱形橋、彎道等實際的例子，培養(yǎng)理論聯(lián)系實際的能力。
人教版高中歷史必修1美國聯(lián)邦政府的建立說課稿2篇
基本上持否定態(tài)度的：美國特拉華州的代表馬丁?路德在制憲會議上評論道：“一個向上帝要求賦予自由的民族，沒有邁出同時給予非洲人自由的第一步是不應該的”。革命導師恩格斯說：“可以表明這種人權的特殊資產(chǎn)階級性質的是美國憲法，它最先承認了人權，同時確認了存在于美國的有色人種奴隸制”。這是一道開放性題目，選自課后“百家爭鳴”，要求學生結合以上材料和課上學習的知識進行思考，在小組討論、代表發(fā)言的基礎上，教師加以引導，并表達自己觀點，之后展示師生共同交流成果。（幻燈片）這一環(huán)節(jié)的設計，一方面培養(yǎng)學生通過閱讀材料獲取信息和運用所學知識分析問題的能力，使學生初步掌握評價文獻的基本方法，另一方面將課后作業(yè)引入課堂教學，既使課程資源得以整合又減輕了學生的課下學習負擔，也體現(xiàn)了“用教材”而不是“教教材”。
人教版高中歷史必修3“罷黜百家獨尊儒術”說課稿2篇
1、漢武帝尊儒的措施：（1）政治方面：起用很多儒學家參與國家大政。他規(guī)定，地方定期選出孝子、廉吏當中央任官，甚至還擢升平民、儒士為相。這明顯擴大了官員的隊伍，提高了官員的文化素質，鞏固了封建統(tǒng)治基礎，成為漢武帝文治武功的重要組成部分。也給后世封建王朝在用人方式方法上面提供了寶貴的借鑒和啟迪。（2）思想方面：采納董仲舒的建議，“罷黜百家 獨尊儒術”（3）教育方面：儒家經(jīng)典“五經(jīng)”為國家規(guī)定的教科書。興辦太學和設立地方學校進行儒學教育。公元前136年，漢武帝正式規(guī)定《詩》、《書》、《禮》、《易》、《春秋》為“五經(jīng)”；前124年，又在長安興辦太學，規(guī)定太學生員為博士弟子，一律由儒家五經(jīng)博士負責教授，學完經(jīng)考試合格后即可到政府任官。這是封建國家利用政權的力量興辦教育、提倡儒學，其必然對整個社會的教育事業(yè)有一定的導向作用。
人教版高中歷史必修3“百家爭鳴”和儒家思想的形成說課稿2篇
我們知道事物之間的矛盾會發(fā)生轉化。但是，由于老子看不到轉化的條件，更看不到人的主觀能動性，因此他對人類社會的發(fā)展抱著消極悲觀的態(tài)度，幻想回到“雞犬之聲相聞，老死不相往來”的“小國寡民”的社會。他的思想，通過《老子》一書留傳了下來。后來的莊子繼承了老子的思想，把“道”作為世界最高的原則，我們可以來看發(fā)生在莊子身上的一個故事：莊子在妻子死后，居然鼓盆而歌，朋友惠施去探望時責備他，他講出一番道理：“當我妻子剛死的時候，我怎么會不難過？可是我省思之后，覺察到她不但沒有生命，而且沒有形體；不但沒有形體，也沒有氣，然后在恍恍惚惚的情況下，變出了氣，氣再變化而出現(xiàn)形體，形體再變化而出現(xiàn)生命，現(xiàn)在又變化而回到死亡，這就好像春夏秋冬四季的運行一樣。這個人已經(jīng)安靜地睡在天地的大屋里，而我還跟在一旁哭哭啼啼。我以為這樣是不明白生命的道理，所以才停止哭泣??！”
人教版高中歷史必修3充滿魅力的書畫和戲曲藝術說課稿2篇
師：很好！我們知道，元明清時期，我國封建社會進入衰落時期，封建專制不斷加強，對文人的思想控制也在不斷加強，士大夫文人只有通過畫來表達自己的想法和內(nèi)心世界，所以這時候的畫強調(diào)借物抒情。大家可以再看到這幅清朝鄭板橋《墨竹圖》，竹子非常清新俊逸，抒發(fā)了一個清高的文人情懷。大家可以仔細品味，鄭板橋的竹子有種脫俗的感覺，看后讓人非常靜心。同學們，在欣賞國畫的時候，我們不是一味地去看它像不像，而要更多去體會他的精神與氣質，沒有思想與內(nèi)涵的人是畫不出一副好畫的，就算他畫技再好，他的也是沒有靈魂的。中國的水墨畫，雖然沒有涂顏料，它卻會使你感受到春天的綠，秋天的黃和冬天的白，我們可以在畫中找尋到自己精神的共鳴。好，剛剛講了這么多，現(xiàn)在請一位同學看到這表格來歸納一下每個時期國畫的不同特點。
人教版高中歷史必修3從蒸汽機到互聯(lián)網(wǎng)說課稿2篇
2、互聯(lián)網(wǎng)的功用：（1）功用：提供文件傳輸、電子信箱、聊天等服務，在社會各個領域發(fā)揮了巨大的作用，標志著信息化社會的出現(xiàn)。（2）特點：網(wǎng)絡媒體作為一種新的傳播媒體，具有界面直觀、音色兼?zhèn)?、鏈接靈活和高速傳輸?shù)奶攸c。3、互聯(lián)網(wǎng)的影響：教師提問，學生思考回答，教師總結 （1）信息經(jīng)濟在世界各地全面發(fā)展，加快了經(jīng)濟全球化的步伐；（2）傳統(tǒng)產(chǎn)業(yè)也借助互聯(lián)網(wǎng)提高管理水平，并通過全球營銷和采購擴大市場；（3）在互聯(lián)網(wǎng)時代，人們可以在家里完成很多工作，提高了工作效率，增加了樂趣；（4）人們的社會交往方式也發(fā)生著改變。（5）也帶來一些負面影響?！竞献魈骄俊?:青少年如何對待網(wǎng)絡：互聯(lián)網(wǎng)在給社會帶來巨大效能的同時，也帶來了巨大的挑戰(zhàn)。青少年應該提高自身的道德素養(yǎng)，樹立正確的網(wǎng)絡觀，讓網(wǎng)絡發(fā)揮出應有的作用。
人教版高中歷史必修3建國以來的重大科技成就說課稿2篇
說教材（一）、本課在教材中的地位：教材在第3單元介紹了古代中國科技的輝煌。第四單元介紹世界近代科技成就，本課主要介紹了現(xiàn)代中國的科技成就。通過對本課的學習，有利于學生感受中國科技古代輝煌、近代落后、現(xiàn)代又取得很大成就這一重要歷程，因此本課在教材中具有重要作用。（二）教學內(nèi)容分析和課標要求：本課主要介紹新中國成立以來我國科學技術成就及作用。從核研究、航空技術、農(nóng)業(yè)新品種研究、計算機應用、生物技術五方面介紹了新中國成立以來取得的舉世矚目的成就。課標對這部分知識作了如下的要求：列舉新中國成立以來科技發(fā)展的主要成績，認識科技進步在現(xiàn)代化建設中的重大作用。根據(jù)以上對教材內(nèi)容的分析和課標要求，我將本課的三維目標確定如下：（三）、教學目標1、知識與能力：識記建國后六十多年來所取得的科技成就；理解科學技術是生產(chǎn)力的論斷；探究科技的發(fā)展在現(xiàn)代化建設中的重要作用。
人教版高中歷史必修3明清之際活躍的儒家思想說課稿2篇
這是略帶提高性的問題，旨在提高學生認識歷史的能力，搞清這一歷史問題有助于理解中西歷史發(fā)展的不同。（學生討論，教師總結歸納并展示。）不是資產(chǎn)階級民主思想，因為它們是資本主義萌芽的產(chǎn)物，資產(chǎn)階級作為一個階級還沒有產(chǎn)生。中國民主思想只停留在批判的層次上，并沒有提出新的思想，更沒有認識到人的基本權利。它沒有成為主流思想，因此沒有促進明清社會的轉型，尚未突破封建思想的束縛。而啟蒙思想集中力量批判專制主義、教權主義，描繪了未來資本主義社會的宏偉藍圖，開成了強大的社會思潮，推動了社會向資本主義社會的轉變。原因：（1）明清之際的資本主義萌芽較為脆弱，使早期民主思想的產(chǎn)生、發(fā)展缺乏強有力的物質基礎。（2）中國傳統(tǒng)文化的束縛和影響。（3）高度強化的專制中央集權制度的壓制使早期民主思想未能形成完整的體系。
人教版高中歷史必修3三民主義的形成和發(fā)展說課稿2篇
在學生正確掌握了三民主義的進步性和局限性之后，提出第五個問題：三民主義的局限性是由什么決定的？這一問題學生較易回答，為進入下一目教學打下基礎。二、三民主義的實踐這目內(nèi)容在新課導入時已經(jīng)涉及，故進行略講，主要采用談話法，與學生一起回憶、交流。在此基礎上，提出探究問題五：在三民主義指導下，孫中山先生進行的一系列革命斗爭其結局怎樣？為什么會這樣？第一問學生較易回答，第二問我組織學生進行交流、討論。在學生回答的基礎上，我將向學生指出：由于三民主義的局限性，它不能指導中國民主革命走向成功，中國革命呼喚新的理論指導。從而過渡到下一目教學。三、舊三民主義發(fā)展為新三民主義1、背景：情境再現(xiàn)，激發(fā)興趣分析資料，感悟新知多媒體播放電影《孫中山》片段讓學生感受在一系列革命斗爭失敗后，孫中山先生的彷徨、思索。
人教版高中歷史必修3物理學的重大進展說課稿2篇
二、相對論的創(chuàng)立【課件】展示下列材料艾伯特·愛因斯坦（1879——1955），1879年3月14日誕生在德國烏爾姆的一個猶太人家中。1894年舉家遷居意大利米蘭。1900年畢業(yè)于瑞士蘇黎世工業(yè)大學。愛因斯坦被認為是最富于創(chuàng)造力的科學家，他不但創(chuàng)立了相對論，還提出了光量子的概念，得出了光電效應的基本定律，并揭示了光的波粒二重性本質，為量子力學的建立奠定基礎。為此榮獲1921年度的諾貝爾物理學獎。同時，他還證明了熱的分子運動論，提出了測定分子大小的新方法?！締栴}】19世紀末20世紀初愛因斯坦對物理學的貢獻是什么？意義是什么？為什么會出現(xiàn)？1、背景：經(jīng)典物理學的危機。19世紀末三大發(fā)現(xiàn)：x射線、放射性和電子，經(jīng)典力學無法解釋研究中的新問題，如：黑體輻射、光電效應等。2、相對論的提出及主要內(nèi)容：（1）“狹義相對論”和光速不變原理：1905年提出。
人教版高中生物必修3第一章第二節(jié)《內(nèi)環(huán)境穩(wěn)態(tài)的重要性》說課稿
四、穩(wěn)態(tài)的重要意義 為什么內(nèi)環(huán)境穩(wěn)態(tài)失調(diào)后，會對機體造成危害？引導學生從細胞代謝需要的物質和條件進行分析，最后總結出：內(nèi)環(huán)境穩(wěn)態(tài)是機體進行正常生命活動的必要條件。如何預防內(nèi)環(huán)境穩(wěn)態(tài)失調(diào)、保持機體健康？引導學生從外界環(huán)境和機體自身調(diào)節(jié)能力兩個方面去思考。即通過加強自我保健，減少外界環(huán)境變化對機體的不良影響，同時增強機體的調(diào)節(jié)能力以適應多變的外界環(huán)境。具體如何做？學生討論，總結。1.保護我們的生存環(huán)境，防治環(huán)境污染。2.加強體育鍛煉，增強體質，提高機體適應外界環(huán)境的能力。3.加強自我保健，為機體保持健康創(chuàng)造有利條件。尤其是處于比較惡劣的工作環(huán)境中的人，更應注意自身保健，如邊防戰(zhàn)士注意保暖、煉鋼工人注意降溫、抗洪戰(zhàn)士注意補充水鹽等。了解這些知識后才能懂得如何關愛自身和他人。