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人教版高中語文必修2《荷塘月色》教案3篇
請問，作者究竟聽到歌聲沒有？”學(xué)生回答：“沒有?！薄斑@里是比喻，因為這里用得是‘仿佛’一詞……”對，是比喻。也就是說，作者是用歌聲來比喻荷香，是吧？“但是，“荷香與歌聲有什么可比的共同點嗎？”“荷香與歌聲都是斷斷續(xù)續(xù)、若有若無的。”“而且朦朦朧朧的?！薄皩Α！昂上愫透杪暥际恰|縷’的、‘渺?！?。這是比喻。這是一種特殊的比喻，錢鐘書先生把它叫做‘通感’。人們通過視覺、聽覺、觸覺、味覺、嗅覺等五官感知外界事物時，在一般情況下，彼此不能交錯；但在特殊情況下，五官功能卻能出現(xiàn)互相轉(zhuǎn)化、彼此溝通的現(xiàn)象叫“通感”，也叫“移覺”。舉幾個例子來說明：詩人艾青曾寫詩這樣描繪日本著名指揮家小澤征爾：‘你的耳朵在偵察，你的眼睛在傾聽……’這也是通感。又如：“那笛聲里有故鄉(xiāng)綠色平原上青草的香味，有四月的龍眼花的香味，有太陽的光明。”（郭風(fēng)《葉笛》）
人教版高中語文必修3《琵琶行 并序》教案
9、在樂曲終了之后，詩人以“東船西舫悄無言，唯見江心秋月白”兩句結(jié)尾，這兩句作用如何？明確：詩人沒有直接寫聽者的熱烈反響以說明琵琶女技藝非凡和樂聲的感人至深，否則過于直白就不含蓄，不含蓄也就顯不出深沉了。用“東船西舫悄無言”的寂靜無聲，反襯“有聲”的音樂效果，可謂“此時無聲勝有聲”了。人們無聲地沉浸、陶醉在藝術(shù)的享受之中，那深深打動人的樂聲仿佛繚繞迂回耳際，不由得使詩人想到了自己浩茫的心事，引起情緒上的波瀾。在這片刻的沉寂中，只見一輪迷蒙的冷月蕩漾在江心的微波之中，它提醒詩人從樂聲中回到現(xiàn)實中來。這句景物描寫點染烘托了濃重的氛圍，與復(fù)雜的樂聲融為一體，共同表現(xiàn)了琵琶女與詩人息息相通的復(fù)雜情感，是那么的憂憤、哀怨凄楚、蒼涼，給整個音樂形象補足了畫龍點睛之筆。
人教版高中語文必修3《動物游戲之迷》教案2篇
一、內(nèi)容與解析內(nèi)容：科普說明文《動物游戲之謎》。解析：《動物游戲之謎》是高中語文（必修）3第四單元的一篇科普說明文。科學(xué)是人類認(rèn)識世界的重要工具，是人類文化的重要組成部分，是標(biāo)志人類文明的尺度。閱讀科普文章，可以啟迪心志，激發(fā)想象，帶領(lǐng)我們進入全新的科學(xué)天地，在科學(xué)海洋中遨游。本文思路清晰，內(nèi)容生動，揭開了動物日常游戲行為的神秘面紗，擺出研究者的種種結(jié)論，既讓我們擴大了視野，增長了知識，也讓我們明白了科學(xué)探索永無止境。學(xué)習(xí)本文的重點是提高的科普文的閱讀能力，培養(yǎng)學(xué)生勤于探索、勇于鉆研的科學(xué)精神。二、教學(xué)目標(biāo)及解析1、理清文章思路，明確本文的說明內(nèi)容和順序。2、品讀文章，感受本文的語言特色。3、激發(fā)探究興趣，培養(yǎng)篩選信息、提取要素及概括敘述的能力。4、挖掘人文內(nèi)涵，培養(yǎng)學(xué)生保護動物的意識和勤于探索、勇于鉆研的科學(xué)精神。
人教版高中語文必修3《蜀道難》教案2篇
【明確】“一夫當(dāng)關(guān)，萬夫莫開”言劍閣有易守難攻的險要形勢，暗示中央朝廷的部隊很不容易打進來，因而野心家可以據(jù)險發(fā)動叛亂，“化為狼與豺”，搞地方割據(jù)。如果割據(jù)勢力之間出現(xiàn)矛盾沖突，難免要發(fā)生混戰(zhàn)，結(jié)果必定是“殺人如麻”。詩人這番預(yù)言在十多年后就得到了證實：從上元二年到大歷初即有段子璋、徐知道、崔旰等人相繼發(fā)動叛亂。詩人的意圖是要嚴(yán)防野心家發(fā)難。詩人從劍閣的險要引出對政治形勢的描寫。他化用西晉張載《劍閣銘》中形勝之地，匪親勿居的語句，目的在于勸人引以為鑒戒，警惕戰(zhàn)亂的發(fā)生，并聯(lián)系當(dāng)時的社會背景，揭露了蜀中豺狼的磨牙吮血，殺人如麻，這既是描寫蜀道猛獸，又是影射政治黑暗的雙關(guān)語句，表達(dá)了對國事的憂慮與關(guān)切，為詩篇增加了現(xiàn)實的內(nèi)涵、深厚的意蘊。唐天寶初年，太平景象背后正潛伏著危機，后來發(fā)生的安史之亂，證明詩人的憂慮是有現(xiàn)實意義的。
人教版高中語文必修3《祝?！方贪?篇
小結(jié)人們對待祥林嫂這個“嫁而再寡”的不幸女人態(tài)度：①、魯四老爺?shù)膽B(tài)度：不讓她干祭祀的活（71、73、75、108通過四嬸先后三喊“你放著罷”，殺人不見血地葬送了祥林嫂的性命。而其中尤以最后一次對其打擊最大）。魯四老爺站在頑固維護封建宗法制度的立場上，從精神上殘酷地虐殺她。他暗暗地告誡四嬸的那段話，就是置祥林嫂于死地而又不露一絲血痕的軟刀子。②、魯四嬸的態(tài)度：魯四嬸是“大戶人家的太太”，頭一次留祥林嫂是看她能干，祥林嫂被婆家綁架走以后，她害怕給自己家惹麻煩。之后她惦念祥林嫂不是因為關(guān)心她的命運，而是自己的傭人都沒有祥林嫂那樣可心。以后祥林嫂再來，她“起初還躊躕”，后來倒是真心憐憫祥林嫂，留下她。但是祥林嫂不像過去那樣靈活能干了，四嬸開始“不滿”，進而“警告”，最后把祥林嫂趕出家門?？梢哉f，四嬸只是把祥林嫂當(dāng)成一件工具罷了，沒有把她當(dāng)人來看。
人教版高中歷史必修3從蒸汽機到互聯(lián)網(wǎng)教案
（2）根據(jù)材料二與所學(xué)知識，從經(jīng)濟、政治、思想文化三個方面，分析歐洲近代科技迅速發(fā)展的原因。答：資本主義工商業(yè)的成長刺激了對技術(shù)的需求，為近代科技的發(fā)展提供了工具和手段；資產(chǎn)階級革命為資本主義發(fā)展、科技進步開辟了道路；人文主義和理性精神解放了思想，推動近代科技迅速發(fā)展。（如答出其它原因，言之有理，可酌情加分，但不得超過該問總分）（3）根據(jù)材料二三與所學(xué)知識，分析清代（鴉片戰(zhàn)爭前）中國科技發(fā)展停滯的原因。答：君主專制維系腐朽制度；重農(nóng)抑商、閉關(guān)政策阻礙資本主義萌芽發(fā)展；自然經(jīng)濟不能提供近代科技發(fā)展的物質(zhì)基礎(chǔ)；文化專制政策（或崇尚理學(xué)、八股取士、文字獄等）禁錮思想，摧殘人才，阻礙科技發(fā)展。（如答出其它原因，言之有理，可酌情加分，但不得超過該問總分。）（4）簡述從中西方科技發(fā)展變化的歷史中得到的啟示。答：評分說明：圍繞生產(chǎn)力發(fā)展，政治經(jīng)濟變革、思想解放與科技發(fā)展的關(guān)系等任一角度回答，言之有理，均可酌情賦分
人教版高中歷史必修3啟蒙運動教案2篇
教學(xué)目標(biāo)：1、知識與能力：（1）識記：理性、啟蒙運動；伏爾泰、孟德斯鳩、盧梭等偉大的啟蒙思想家及其主張；康德及啟蒙運動的影響；（2）理解啟蒙運動興起的背景，分析啟蒙思想的巨大影響；（3）認(rèn)識上層建筑對社會發(fā)展的巨大反作用。2、過程與方法：（1）指導(dǎo)學(xué)生用表格法掌握啟蒙運動主要代表人物及其思想主張；（2）運用比較法加深對啟蒙思想家觀點共性和個性的認(rèn)識。（3）運用比較法對比文藝復(fù)興和啟蒙運動的異同，說明啟蒙運動對人文主義思想的發(fā)展。3、情感態(tài)度與價值觀：（1）通過本課的學(xué)習(xí)，讓學(xué)生認(rèn)識到“一定的文化是一定社會的政治和經(jīng)濟在觀念上和形態(tài)上的反映”；（2）學(xué)習(xí)啟蒙思想家追求真理的精神，培養(yǎng)學(xué)生遠(yuǎn)大的理想與抱負(fù)；（3）通過法國啟蒙思想產(chǎn)生的巨大影響的分析，使學(xué)生認(rèn)識意識形態(tài)對社會發(fā)展所起的重大作用，從而提高學(xué)習(xí)理論的自覺性。
人教版高中政治必修3體味文化教案2篇
3、文化是人們的一種素養(yǎng)（1）人的文化素養(yǎng)是在社會生活、實踐中形成的。每個人所具有的文化素養(yǎng)，不是天生的，而是通過對社會生活的體驗，特別是通過參與文化生活、接受知識文化教育而逐步培養(yǎng)出來的。文化素養(yǎng)的形成，離不開生活、實踐和教育。人們在社會實踐中創(chuàng)造和發(fā)展文化，也在社會生活中獲得和享用文化。（2）人的文化素養(yǎng)表現(xiàn)在日常言行中。教師活動：引導(dǎo)學(xué)生閱讀教材7頁“公交車漫畫”材料，并思考所反映的問題學(xué)生活動：積極思考并討論問題教師點評：人們的精神活動離不開物質(zhì)活動，人們的文化素養(yǎng)總是要通過他在日常生活中的言行、在社會實踐活動中的表現(xiàn)等表現(xiàn)出來。我們通過觀察人們的社會行為，就可以從中透視人們的精神世界和精神生活。4、文化的傳承和發(fā)展離不開物質(zhì)載體。社會文化和精神產(chǎn)品離不開物質(zhì)載體，一個時代的文化和精神產(chǎn)品，往往是這一時代社會發(fā)展軌跡的反映。
新人教版高中英語必修1Unit 3 Sports and Fitness-Reading and Thinking教案
2. Sort out detailed information about Michael Jordan.（1） Understand the transitional sentence.Q: Which part is about Michael Jordan as a master? Which part is about the example he set?（2） Have the Ss Focus on why Michael Jordan is a master and what good examples Michael Jordan set when they’re reading. And think about these questions as below:Q1: How does the author describe his impressive skills?Q2: How do you understand “time seemed to stand still”?Q3: What does “graceful” mean?Q4. Which sentence do you think best describes his mental strength?Q5. Which words is important in the sentence in describing his mental strength? Why?Q6: How do you understand “unique”?Q7: What can we learn from Michael Jordan?Step 5 Discussing and recommendingRecommend their own living legends of sports.Work in groups to choose your own living legend of sports and give the reasons of your choice. Step 6 HomeworkReview the stories of Lang Ping and Michael Jordan, and try to retell them.
新人教版高中英語必修1Unit 3 Sports and Fitness-Reading for Writing教案
Then have them write a short paragraph to describe and explain their changes. After that, get the Ss to exchange their drafts with their partners and use the checklist to give feedback on their drafts, and finally revise it.Step 5 Summary of how to write a wellness book1.健康書的審題步驟：第一步：明確要求該寫作屬于經(jīng)驗分享，故要用第一人稱來寫;時態(tài)以一股現(xiàn)在時為主。第二步：確定段落該類文章可以從以下三個方面人手:Para.1首先表明寫作的目的Para.2自己的做法及心得體會Para.3表示期望及感謝第三步：提煉要點2.健康書常見句式：1) It is an honor for me to share my favorite sport with you,2) It makes me feel relaxed playing with my friends.3) It makes me rid myself of stress while playing with my friends.4) Moreover, it provides me a valuable chance to communicate with others.5) I we eat too little or too much, or if we choose the wrong food, we may become sick.6) We can do something to change the poor situation.Step 6Homework假如你的老師讓你在班級Wellness Bok上分享自己的親身經(jīng)歷及心得，請根據(jù)以下要點寫一篇80字左右的文章1. 你喜歡的運動是什么？2. 你最喜歡的原因是什么？3. 你參加鍛煉的體會。
新人教版高中英語必修2Unit 3 The Internet-Discovering Useful Structure教案二
This teaching period mainly deals with grammar “The Present Perfect Passive Voice.” To begin with, teachers should lead students to revise what they have learned about the Present Perfect Passive Voice. And then, teachers move on to stress more special cases concerning this grammar。This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercises. 1. Guide students to review the basic usages of the Present Perfect Passive Voice2. Lead students to learn to use some special cases concerning the Present Perfect Passive Voice flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of the Present Perfect Passive Voice in a sentence2. Instruct students to write essays using the proper the Present Perfect Passive Voice.觀察下列句子特點，總結(jié)共同點。1．(教材P28)Much has been written about the wonders of the World Wide Web．2．(教材P28)But the Internet has done much more for people than simply make life more convenient．3．(教材P28)Many people have been helped by the club．4．(教材P28)She no longer feels lonely, and her company has become quite successful．5．(教材P32)Today I thought I’d blog about a question that has been asked many times—how do you stay safe online and avoid bad experiences on the Internet?
新人教版高中英語必修2Unit 3 The Internet-Discovering Useful Structure教案一
This unit is about the Internet, which has a great influence to our humans and our lives. During the Listening & Speaking & Talking and Reading and Thinking section, the influence in examples has been shown. Thus, use the Present Perfect Tense is appropriate. However, in order to show the justice or weaken the doer of the behavior/action, it’s better to use the Present Perfect Passive Voice than the Present Perfect Tense. Besides, having learned to use the Present Perfect Passive Voice, students can beautify their language in their writing. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. Step 1 Observe the following sentences, then change the sentences into passive voice.He has been selected to take part in the sports meeting．(肯定句)他已被挑選出來參加運動會。The ink has not been removed from his overcoat．(否定句)墨跡還沒有從他外套上去掉。
新人教版高中英語必修2Unit 3 The Internet-Listening &Speaking＆Talking教案二
From the pictures in the text and the title--- choose the best app, we can know that this part is about how to save money by using apps.Step 2 While-listening1. Laura and Xiao Bo are talking about apps. Listen to their conversation and find out what apps they want.Xiao Bo is looking for a(n) exercise app to help him get in shape.Laura would like an app for getting rich and another that will make her grades better.2. Listen again. Are the sentences true T or false F?1). Both of Xiao Bo's apps keep track of the steps he takes._____2). Xiao Bo's second app can help him make a fitness plan._____3). Laura needs an app that will help her get discounts.______4). Laura needs an app that will add money to her bank account._______F T F T3. Listen once more and tick the sentence you hear. Underline the words used to express predictions, guesses, and beliefs.Predictions, Guesses, and Beliefs________It might help me walk more.________My guess is that it wouldn't work.________I imagine this app would help me get fit faster________I suppose that would be good.________I guess you could save a little with this app.________I suppose there would be some problems, too.________I believe this app could help me get thinner.
新人教版高中英語必修2Unit 3 The Internet-Listening &Speaking＆Talking教案一
Listening and Speaking introduces the topic of “ask about online habits”. Many middle school students have been surfing the Internet for many years, but what they do with the Internet and how much time they spend every day may not be very clear to themselves, nor to other students. This section allows students to investigate their peers' Internet use, which is conducive to their mutual understanding and understanding of the Internet. It can also help them reflect on their own online behavior, learn from other people's good online habits, and get rid of their bad online behavior.The listening text of this section is an investigation interview. The investigators interview specific groups with the same questions to obtain information, so as to understand their views, practices or attitudes on this issue. There are two specific questions: “how much time do you spend online every day? What do you usually do online?”. The answers of the three respondents provide rich and different information, and achieve the purpose of the investigators. The oral discourse structure of survey interviews generally includes greeting and explaining the purpose of the interview, presenting the interview questions and the respondents' answers. Listening and Talking introduces the theme of “choosing the right application ". Listening text is a conversation between Laura and Xiao Bo. In this part of listening, “oink”； “piggy bank” may cause the students' hearing comprehension limitation. Oink refers to sound word and pig's sound. So, add some oink to my piggy bank is often used to describe "making a little money".1. Guide students to understand the content of listening texts in terms of listening for definitions.2. Cultivate students' ability to define words and understand an investigation interview.
新人教版高中英語必修2Unit 3 The Internet-Reading and Thinking教案二
Q5：What's Jan's next goal?Her next goal is to start a charity website to raise money for children in poor countries.Q6：What can we learn from her experiences?We learn that when we go through tough times, we can find help and support from other people online. We learn that we can feel less lonelyStep 5: While reading---rethinkingQ1: What is Jan’s attitude to the Internet ?Thankful/Grateful, because it has changed her and her life.Q2: What writing skills is used in the article ?Examples(Jan’s example, the 59-year-old man’s and the 61-year-old woman’s example)Q3: Can you get the main idea of the article ?The Internet has changed Jan’s life/Jan’s life has been changed by the Internet.Step 6 Post reading---Retell the storyMuch has been written about the wonders of the World Wide Web. There are countless articles (1)telling(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)more(much) for people than simply make life more convenient. People’s lives (3) have been changed(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)stuck(stick) at home with only her computer to keep (5)her(she) company. She joined an online group (6)where she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)benefits(benefit). She was so inspired (8)that she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)for children in poor countries. Jan’s life has been (10)greatly(great) improved by the Internet.
新人教版高中英語必修2Unit 3 The Internet-Reading for Writing教案二
8. However, the more polite you are, the less likely it is you will be attacked. 然而, 你越有禮貌, 你被攻擊的可能性就越小。 Step 8 Writing---the articleHow to stay safe in the online chat roomToday I thought I’d blog about a question that has been asked many times--- how do you stay safe online and avoid bad experiences in the online chat room ? I’m not an expert, but many years as a blogger have taught me a thing or two.First of all, there’s the golden rule of the Internet: keep out of what makes you uneasy. Don’t post comments or click on anything. Second, protect your privacy. Don’t give out too much private information like your address, phone numbers, the ID numbers, etc. Third, be polite. If you are polite to others on the Internet, you won’t be attacked in normal situation. Finally, don’t believe in others easily and never meet someone you met online alone. It is very dangerous.Have you had any bad experiences online, or do you have some good advice for staying safe? Post your comments below!Step 9 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer tell the reader what he/she know about the topic ?2. Are the tips and suggestions well organised ?3. Has the writer defined the new words ?4. Does the author include examples, comparison, or explanations ?5. Does the writer end by asking readers to leave comments and/or suggestions ?6. Can you find any grammar or spelling mistakes.Step 6 HomeworkPut up your revised draft in the classroom or read it to your class.
新人教版高中英語必修2Unit 3 The Internet-Reading For Writing教案一
⑦identity theft 身份盜竊⑧chat room 聊天室⑨draft your blog post 起草博客帖子⑩post embarrassing photos 張貼尷尬照片 【話題句式】 1. How do you stay safe online and avoid bad experiences on the Internet? 你如何在網(wǎng)上保持安全, 避免在網(wǎng)上的不良經(jīng)歷? 2. I’m not an expert, but many years as a blogger have taught me a thing or two. 我不是專家, 但作為一個博主, 我已經(jīng)學(xué)了好幾年了。 3. If you see or read something that makes you feel uncomfortable, leave the site immediately. 如果你看到或讀到一些讓你覺得不舒服的東西, 立即離開這個網(wǎng)站。4. Don’t give out your address or phone number. 別告訴別人你的地址或電話號碼。 5. Identity theft is a common and serious problem. 身份盜竊是一個常見而嚴(yán)重的問題。6. Being online is no excuse for being rude, and you don’t want to become a target for a troll or cyberbully. 上網(wǎng)并不是無禮的借口, 你也不想成為發(fā)挑釁帖子的人或網(wǎng)絡(luò)惡霸的目標(biāo)。 7. Trolls often use several false names so that they can stay on a site. 發(fā)挑釁帖子的人經(jīng)常使用幾個假名, 這樣他們就可以留在一個網(wǎng)站上。8. However, the more polite you are, the less likely it is you will be attacked. 然而, 你越有禮貌, 你被攻擊的可能性就越小。
人教版高中政治必修3建設(shè)學(xué)習(xí)型社會教案
三、第三階段。課后感悟與收獲１、讓學(xué)生以“走向?qū)W習(xí)型社會”為題，將在收集與整理、展示與交流兩個環(huán)節(jié)中獲得的體驗和感悟，以心得體會的形式寫一篇小論文。２、辦一期專欄或黑板報，將優(yōu)秀小論文作集中展示與交流。（進行理論總結(jié)，將實踐與理論相結(jié)合，讓科學(xué)理論更好地指導(dǎo)實踐。充分挖掘?qū)W生潛力，增強學(xué)生的自信）［評析］新課程理念之一就是政治課不應(yīng)只局限于課堂上的教與學(xué)。把綜合探究課與研究性學(xué)習(xí)相結(jié)合，不失為一種有益的嘗試。傳統(tǒng)的學(xué)習(xí)方式把學(xué)習(xí)建立在客觀性、受動性、依賴性的基礎(chǔ)上，把學(xué)生看成一個沒有感情的接受容器，這種學(xué)習(xí)會窒息學(xué)生的思維和智力，成為學(xué)生發(fā)展的障礙。單元探究活動的開展就是要轉(zhuǎn)變學(xué)生的學(xué)習(xí)方式，關(guān)注學(xué)生的學(xué)習(xí)過程，使得探究過程成為學(xué)生發(fā)現(xiàn)問題、提出問題、分析問題、解決問題的過程，培養(yǎng)學(xué)生的創(chuàng)新精神和實踐能力。本教案的第一階段充分發(fā)揮了學(xué)生的主動性。
新人教版高中英語必修2Unit 3 The Internet-Reading and Thinking教案一
Paragraph 3. Jan decided to start an IT club to teach old people how to use computers and the Internet. Paragraph 4. Jan has started taking online classes to learn more about how to use the Internet to make society better. Paragraph 5. Jan’s life has been greatly improved by the Internet. Step 5: Critical thinking:(1)How do you arrange your time spent on study and the Internet? Is it reasonable? I usually surf the Internet using my mobile phone for only an hour after class, and it is reasonable for me.(2)What are your online activities? Are they safe? I chat with my friends, read news and play games. I never give away my private information so I think they are safe.Step 4: summary Much has been written about the wonders of the World Wide Web. There are countless articles (1)______(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)_____(much) for people than simply make life more convenient. People’s lives (3) _________________(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)_____(stick) at home with only her computer to keep (5)___(she) company. She joined an online group (6)______ she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)_______(benefit). She was so inspired (8)____ she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)___ children in poor countries. Jan’s life has been (10)______(great) improved by the Internet. Step 5 Homework:Review what we have learned and find out the key language points in the text.
人教版新課標(biāo)高中物理必修1彈力教案2篇
一般情況下，凡是支持物對物體的支持力，都是支持物因發(fā)生形變而對物體產(chǎn)生彈力。所以支持力的方向總是垂直于支持面而指向被支持的物體。例1：放在水平桌面上的書書由于重力的作用而壓迫桌面，使書和桌面同時發(fā)生微小形變，要恢復(fù)原狀，對桌面產(chǎn)生垂直于桌面向下的彈力f1，這就是書對桌面的壓力；桌面由于發(fā)生微小的形變，對書產(chǎn)生垂直于書面向上的彈力f2，這就是桌面對書的支持力。學(xué)生分析：靜止地放在傾斜木板上的書，書對木板的壓力和木板對書的支持力。并畫出力的示意圖。結(jié)論：壓力、支持力都是彈力。壓力的方向總是垂直于支持面而指向被壓的物體，支持力的方向總是垂直于支持面而指向被支持的物體。引導(dǎo)學(xué)生分析靜止時，懸繩對重物的拉力及方向。引導(dǎo)得出：懸掛物由于重力的作用而拉緊懸繩，使重物、懸繩同時發(fā)生微小的形變。重物由于發(fā)生微小的形變，對懸繩產(chǎn)生豎直向下的彈力f1，這是物對繩的拉力；懸繩由于發(fā)生微小形變，對物產(chǎn)生豎直向上的彈力f2，這就是繩對物體的拉力。