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人教版高中生物必修2遺傳密碼的破譯說課稿

  • 人教版高中英語必修3Festivals around the World說課稿3篇

    人教版高中英語必修3Festivals around the World說課稿3篇

    Teaching plan for Unit 1 book3Good morning, teachers. It’s my great pleasure to be here because I can share my lesson with you and I can learn a lot from it. I’ll begin my lesson from the following four parts, the teaching material, the teaching methods, the studying methods and the teaching procedure.Firstly, let me talk about the teaching material. The content of my lesson is the reading passage festivals and celebrations of Unit 1 Festivals around the world. This passage is about festivals and celebrations. By studying this passage, we’ll enable the students to know that festivals exit everywhere, and many of festivals in different countries celebrate similar ideas. As we all know, the reading passage is the center of each unit. If the Ss can learn it well, it will be helpful to make the Ss learn the rest of this unit.After studying the teaching material, I think the teaching aims are as the followings:1. Knowledge aims:(1) The Ss can master the usage of the important words andexpressions.(2)The Ss can use the __________________ (grammar) in the proper situation.Make students know about the festivals all over the world and the detail of the festivals, such as origin, content, and the date of the holiday festivals.2. Ability aims:(1) Students can talk about festivals and celebrations in English(2) To improve the student’s reading ability, especially their skimming and scanning ability.3. Emotion aims:Make the Ss know about the foreign festivals, and respect other countries’ custom.Next, let’s come to the important points and the difficult points.The important point is how to make the Ss understand the text better and the difficult point is how can they talk about it. secondly, Teaching Methods:1. task-based Language Teaching2. Computer assisted language teaching.3. question-and–answer methodThirdly, Studying Methods:

  • 人教版高中英語必修4Theme parks說課稿3篇

    人教版高中英語必修4Theme parks說課稿3篇

    The oldest and the most popular park in the worldenjoy the exciting activities thereget close to the life-size cartoon characters like Mickey Mouse and Donald Duck Step 3 Pre-reading1.What do you suppose a theme park is ?2.What do you think you can see in a theme park?(1.It is a kind of amusement park which has a certain theme – that the whole park is based on. 2.buildings, castles, statues, rare animals and birds, and so on.) Step 4 Reading ----- Theme Parks –---- Fun and More Than Fun1.Predict : Read the title and the pictures on P. 34 and PredictWhat is the meaning of the title “Theme Park – Fun and more than fun”?(The title means that theme parks are fun to visit, but that they can also be educational and can offer useful information.)2.Skimming Fast read and answer:What activities can we take in a theme park?Amusement park: Bumper car Merry-go-round slide bungee jumping Free-fall rides Horror films Pirate ship Ferris wheel roller coaster3.Scanning Read again and you will find various theme parks are mentioned in the passage . Then what are they ?Theme parks: Sports theme park History theme park Culture theme park Marine or Ocean theme Park Future park Science theme park Disneyland4.Careful reading and find the main idea of each paragraph:THEME PARKS---- entertaining/ educationalPara.1 Traditional parks are places to go for relaxation and to have time away from our busy lives.Para.2 Theme parks are different They’re large and full of things to do, see and buy.Para.3 Theme parks are built around a single idea or theme. One example is a sports park.Para.4 Another kind of theme park is historical more and cultural and can be educational.Para.5 Disneylandwas the first theme park. It is based on the fantasy life and characters of Disney’s films.Para.6 Some examples of educational theme parks include sea world parks and science parks.

  • 人教版高中英語必修4Working The Land說課稿3篇

    人教版高中英語必修4Working The Land說課稿3篇

    Knowledge objectives:(1) to make Ss grasp the usage of words, expressions and sentence structures: statistics, struggle, thanks to, rid of, some patterns for persuasion, the “ing” form as subject and object;(2)to use learnt knowledge to persuade sb.Ability objectives:(1) to develop Ss’ reading skills(skimming, scanning, word guessing);(2) to improve Ss’ speaking, communicating and cooperating skills.Emotional objectives:to make Ss know the contribution of Yuan,and learn his spirit and his simple life time.Teaching important and difficult points:(1) some words, expressions and sentence structures mentioned above;(2)the content of the text;(3)training their reading and speaking skills.Teaching methods: CLT, TBLT,QT.Learning strategies: CLS, QLS, TBLS.Teaching procedures:Step 1 lead-in: (1) teacher plays a piece of recent news from CCTV about the harvest of the super hybrid rice, and ask students whether they know Yuan or not, and talk about him and his contribution.(2)Brain storm: let Ss describe Yuan in their minds including his appearance, his living condition and so on.Step 2 fast reading tasks:(1)teacher introduces Yuan and super hybrid rice(2)make Ss read the text as fast as possible with questions. Such as: what’s the general ideaof this passage? What’s Yuan’ dream? (skimming and scanning skill)Step 3 intensive reading tasks(1)let Ss read the text silently, find topic sentence of each paragraph and draw the difficult sentences and the knowledge what they don’t understand.(words guessing)(2)teacher and Ss talk about the important words, expressions and sentences together, and ask Ss to retell the content of the text.(summarizing and paraphrasing)(3)teacher summarize this part.(4) read again following the courseware.

  • 人教版高中英語必修3The million pound bank note說課稿3篇

    人教版高中英語必修3The million pound bank note說課稿3篇

    在接下來的細(xì)讀環(huán)節(jié),我套用了高考對(duì)閱讀理解的考查方式設(shè)置了5個(gè)問題,分別為三個(gè)推理判斷題,一個(gè)細(xì)節(jié)題和一個(gè)主旨大意題。學(xué)生需要對(duì)文章的內(nèi)容進(jìn)行分析、歸納、推理、猜測等高級(jí)思維活動(dòng)才能做出正確的回答?!驹O(shè)計(jì)意圖】這一過程是對(duì)學(xué)生進(jìn)行細(xì)讀的訓(xùn)練,培養(yǎng)學(xué)生獲取特定信息和挖掘文章深層次信息的能力。第三環(huán)節(jié):Intensive-reading (精讀) 15′第三個(gè)環(huán)節(jié)精讀,既是最重要的環(huán)節(jié),也是突破本課重難點(diǎn)的關(guān)鍵。首先,讓學(xué)生思考劇本中人物看到百萬英鎊前后的態(tài)度發(fā)生了怎樣的變化。其次,讓學(xué)生仔細(xì)閱讀文章,找出可以表現(xiàn)人物態(tài)度變化的具體的語言和動(dòng)作。最后,讓學(xué)生總結(jié)人物的態(tài)度發(fā)生變化的根本原因是什么,從而引出Money Talks, 供學(xué)生思考?!驹O(shè)計(jì)意圖】通過一系列的活動(dòng)培養(yǎng)學(xué)生學(xué)習(xí)從人物的語言和動(dòng)作探究人物的心理,使學(xué)生進(jìn)一步體會(huì)戲劇語言的魅力,從而對(duì)文章背后所反映的社會(huì)問題進(jìn)行思考,也為下一步的討論環(huán)節(jié)做好鋪墊。

  • 人教版高中英語必修5First aid說課稿6篇

    人教版高中英語必修5First aid說課稿6篇

    In this class, I have 3 teaching aims, that is, knowledge aims, ability aims and emotion aims.1) Knowledge-Teach students new words and expressions, such as temporary, bleed,sprain choke, first aid, fall ill and so on.-Enable students to have a better understanding for some basic knowledge of first aid.2) Ability-Train students’ speaking, reading and writing abilities by different teaching activities, such as skimming, comprehending, team work, role play, retelling and writing.-Develop students’ reading strategy on how to move general idea to specific information.3) Emotion-Promote students’ awareness of giving first aid.- Cultivate students’ creativities.Then let’s come to my teaching methods and activities.III. Teaching methods and activities:To achieve different teaching aims, various kinds of teaching methods and activities will be adopted throughout this period, such as TBL (task-based learning), skimming, team work, brainstorm and others, which can offer students opportunities to fulfill tasks in which they can use language to achieve a specific outcome.IV. Teaching aids:Computer and blackboardV. Teaching important points:1) Make students have a clear mind for the structure of the text.2) Help students understand the theme of the text.VI. Teaching difficulties:1) So many new words may affect students’ understanding.2) How to get students to know about the functions of the skin and thecauses, characteristics and treatments for different degree burns,and the knowledge about giving first aid. VII. Blackboard design:

  • 人教版高中英語必修5Great scientists說課稿4篇

    人教版高中英語必修5Great scientists說課稿4篇

    通過寫文章梗概,培養(yǎng)學(xué)生綜合運(yùn)用語言的能力,學(xué)習(xí)用恰當(dāng)?shù)挠⒄Z描述科學(xué)家的故事。這是本課的教學(xué)難點(diǎn)。教師可以使用完形填空的方式來幫助學(xué)生整理語篇,從而來降低難度。本課的教學(xué)重點(diǎn)的突破方法是:在閱讀前,讓學(xué)生初步了解得出科學(xué)觀點(diǎn)所需要的基本程序,從而輕松而自然地導(dǎo)入文章的閱讀;在閱讀過程中,由易到難設(shè)計(jì)快速閱讀和精讀的問題,層層推進(jìn)各種閱讀活動(dòng),讓學(xué)生對(duì)閱讀內(nèi)容從整體感知到細(xì)節(jié)理解,最后深層讀懂整篇文章,同時(shí)加強(qiáng)閱讀策略的指導(dǎo),讓每個(gè)學(xué)生都主動(dòng)參與課堂教學(xué)活動(dòng),最終達(dá)到提高閱讀能力的目的。Step 4 Post-readingGroup Activities四人小組共同合作,在老師的適當(dāng)指導(dǎo)下,就以下2個(gè)問題展開討論,讓學(xué)生就所知、所學(xué)、所感和所想融入話題,然后抽若干同學(xué)代表作小組發(fā)言。1. What do you think about John Snow, and what should we learn from him?2. Cholera was 19th century disease, which two diseases are similar to cholera today? Why?

  • 人教版高中英語必修5Life in the Future說課稿5篇

    人教版高中英語必修5Life in the Future說課稿5篇

    Good afternoon, everyone. It’s my great pleasure to be here sharing my lesson with you. The content of my lesson is Senior English for China Book5 Unit 3 Life in the Future. I’ll be ready to begin this lesson from six parts: Analysis of the teaching material, Analysis of the students, Teaching aims and important and difficult points, Teaching methods and aids, Teaching procedures, and Blackboard design. First, let me talk about the teaching material.Part 1 Analysis of the Teaching Material:This unit is about what human beings’ life will be like in about one thousand years. By studying of this unit, we’ll Enable the students to know the changes in humans’ life and some new inventions bringing about the change and develop the interest in science. This lesson plays an important part in the English teaching in this unit. This is an important lesson in Book Five. From this lesson, it starts asking the Ss to grasp contents of each passage. Therefore, this lesson is in the important position of the teaching material. If the Ss can learn it well, it will be helpful to make the Ss learn the rest of this unit.Part 2 Analysis of the SsAs Senior2 Ss, they are at different levels of English fluency, some of them have lost interest in English. So during the lesson, I arrange a variety of activities to let all of them join in to attract their interest and let them be confident and taste the joy of success.

  • 人教版高中英語必修5Making the news說課稿4篇

    人教版高中英語必修5Making the news說課稿4篇

    今天我們來介紹一下必修五第四單元的授課方式。這個(gè)單元的題目是Making the news。應(yīng)該是學(xué)生比較感興趣的話題,學(xué)生往往對(duì)新聞工作充滿好奇,所以我們可以利用這個(gè)機(jī)會(huì)多設(shè)計(jì)一些師生互動(dòng)和學(xué)生互動(dòng),來激發(fā)起學(xué)習(xí)的積極性,提高學(xué)習(xí)效率。同時(shí)我們可以利用這個(gè)單元不僅幫助學(xué)生掌握語言知識(shí),培養(yǎng)語言能力,同時(shí)讓其了解新聞工作的重要性,培養(yǎng)起社會(huì)智能感。這個(gè)單元分為六個(gè)課時(shí),它的教學(xué)目標(biāo)是這樣的:語言目標(biāo)是掌握詞匯表中的常用單詞和短語,掌握倒裝句的一些基本用法。 技能目標(biāo)是能初步掌握約會(huì)的基本句型并在真實(shí)的場景下正確運(yùn)用。新聞報(bào)道類文章的寫作技能。采訪的基本規(guī)范和溝通技能。情感目標(biāo)是對(duì)新聞報(bào)道的客觀性和真實(shí)性有更好的理解。對(duì)新聞?dòng)浾叩穆殬I(yè)有更深入的了解,并能體會(huì)其工作的重要性。下面我們來介紹一下第一課時(shí)的授課方式,第一課的教學(xué)目標(biāo)是這樣的第一課時(shí)的教學(xué)目標(biāo)語言目標(biāo):單詞:Occupation, journalist, editor, photographer, curious, personality, enthusiasm

  • 人教版高中英語必修5The United Kingdom說課稿4篇

    人教版高中英語必修5The United Kingdom說課稿4篇

    Teaching Aims:Knowledge 1. Get the students to learn the useful new words and expressions in this section. Aims:2. Let the students learn about how the UK was formed and the four groups of invaders.1. Develop students’ reading ability and let them learn different Ability reading skills. Aims:2. Enable students to learn to talk about the United Kingdom and the Union Jack Emotional 1. Let students know more about the UK2. Develop students’ sense of cooperative learning Aims:Teaching Important Points:1. Let the students learn about the countries of the United Kingdom and the Union Jack2. Get the students to read the passage and know about how the UK was formed and the four groups of invaders.3. Have the students learn different reading skills.Teaching Difficult Ponts:1. Develop students’ reading ability.2. Enable students to talk about the United Kingdom and the Union Jack.3. Let students learn how the UK was formed geographically and historically.Teaching Methods:Showing pictures, asking, exercising, listening, reading etc.Teaching Aids:A computer,a projector and a blackboard.Teaching Procedures: 1) Show a map of the world, ask students the following questions:Where is the UK?What’s the full name of the UK?2) Ask the students work in pairs to do the quiz on Page 9.Do you want to test how many things you know about the United Kingdom? Let’s have a small test.Using the map on P9, students answer the following questions:?How many countries does the UK consist of? What are they??England is divided into three main areas. Do you know what they are? 1) Scanning (10Minutes )Let the students hold the questions asked in pre-reading and read the passagequickly and then let them do the following exercise.Join lines to the right answer.

  • 人教版新課標(biāo)高中物理必修2生活中的圓周運(yùn)動(dòng)教案2篇

    人教版新課標(biāo)高中物理必修2生活中的圓周運(yùn)動(dòng)教案2篇

    思考:洗衣機(jī)脫水時(shí)轉(zhuǎn)速高時(shí)容易甩干衣物,還是轉(zhuǎn)速低時(shí)容易甩干衣物?(2) 制作棉花糖的原理內(nèi)筒與洗衣機(jī)的脫水筒相似,里面加入白砂糖,加熱使糖熔化成糖汁。內(nèi)筒高速旋轉(zhuǎn),黏稠的糖汁就做離心運(yùn)動(dòng),從內(nèi)筒壁的小孔飛散出去,成為絲狀到達(dá)溫度較低的外筒,并迅速冷卻凝固,變得纖細(xì)雪白,像一團(tuán)團(tuán)棉花。5.離心現(xiàn)象的防止在水平公路上行駛的汽車,轉(zhuǎn)彎時(shí)所需的向心力是由車輪與路面的靜摩擦力提供的。如果轉(zhuǎn)彎時(shí)速度過大,所需向心力F大于最大靜摩擦力Fmax,汽車將做離心運(yùn)動(dòng)而造成交通事故。因此,在公路彎道處,車輛行駛不允許超過規(guī)定的速度。當(dāng)高速轉(zhuǎn)動(dòng)的砂輪或者飛輪內(nèi)部分子間相互作用力不足以提供所需向心力時(shí),離心運(yùn)動(dòng)就會(huì)使他們破裂,甚至釀成事故。

  • 人教版高中政治必修3文化在交流中傳播說課稿2篇

    人教版高中政治必修3文化在交流中傳播說課稿2篇

    師:同學(xué)們這個(gè)暑假過得真不錯(cuò)呀,都有自己最開心的日子。同學(xué)們經(jīng)歷的這些活動(dòng),讓你們自己長了知識(shí),豐富了閱歷,你們今天的介紹,也讓我和更多的同學(xué)大開了眼界。由此可見,在今天,通過親身參與、實(shí)踐,通過網(wǎng)絡(luò)、電影,通過交流發(fā)言,大家獲得了許多新的信息、知識(shí),增強(qiáng)了對(duì)祖國美好河山的熱愛、對(duì)科技的向往和異國的友誼。同學(xué)們信息交流的過程,實(shí)際上也是文化傳播的過程。板書課題:第二課時(shí)文化在交流中傳播話題導(dǎo)入討論話題:如何建設(shè)文明校園?(課前準(zhǔn)備:要求同學(xué)們仔細(xì)觀察、了解關(guān)于校園文明現(xiàn)象的問題,并就如何建設(shè)文明校園提出自己的建議。教師可按自然組,讓學(xué)生推選一名代表發(fā)言,就校園文明方面談?wù)劥嬖诘膯栴}和不足,或提出一些中肯的改進(jìn)意見)(學(xué)生交流)生1:建設(shè)文明校園,首先要凈化語言環(huán)境,我們學(xué)校不少同學(xué)愛說臟話,與文明校園很不相稱。

  • 人教版高中地理必修2第四章第三節(jié)傳統(tǒng)工業(yè)區(qū)與新工業(yè)區(qū)說課稿

    人教版高中地理必修2第四章第三節(jié)傳統(tǒng)工業(yè)區(qū)與新工業(yè)區(qū)說課稿

    下面是對(duì)以高技術(shù)產(chǎn)業(yè)為主的新工業(yè)區(qū)的內(nèi)容進(jìn)行講解,教材以美國“硅谷”為例,首先談的是高技術(shù)工業(yè)的特點(diǎn),然后講述的是“硅谷”的發(fā)展條件,由于教學(xué)模式與意大利新工業(yè)區(qū)的內(nèi)容基本一致,這里就不再贅述了。接下來教材中提到的與之對(duì)照的案例同樣是以高技術(shù)產(chǎn)業(yè)而聞名的中關(guān)村,由于中關(guān)村在國內(nèi)的知名度較高,一般學(xué)生都有所了解,因此不妨讓學(xué)生談?wù)勛约旱目捶ǎ簩?duì)于高新技術(shù)產(chǎn)業(yè)的發(fā)展有何建議,相對(duì)于發(fā)展較為成功的“硅谷”我們需要學(xué)習(xí)的方面又是哪些?案例中最后一個(gè)問題很值得深省,我國的新工業(yè)區(qū)到底怎樣做才能夠獲得成功,簡單的模仿下我們?nèi)鄙俚挠质鞘裁??這個(gè)問題可以作為拓展,讓學(xué)生寫一篇簡短的論文作為課后作業(yè)。最后做以簡單的課堂小結(jié)。本節(jié)內(nèi)容的教學(xué)可能會(huì)相對(duì)繁雜,而案例之間的分析過程又過于雷同,所以難免枯燥。在處理這個(gè)問題上,我將盡量做到詳略得當(dāng),主要培養(yǎng)學(xué)生的自主學(xué)習(xí)能力。

  • 人教版新課標(biāo)高中物理必修2平拋運(yùn)動(dòng)說課稿2篇

    人教版新課標(biāo)高中物理必修2平拋運(yùn)動(dòng)說課稿2篇

    (5)高度不同,對(duì)平拋運(yùn)動(dòng)距離有何影響,是否因?yàn)楦叨葴p小后下落時(shí)間減小,所以要增大速度才能達(dá)到相同的距離?(教學(xué)實(shí)踐證明,這種想法在學(xué)生比較多見。已經(jīng)不自覺的沿用了自由落體運(yùn)動(dòng)的規(guī)律,又隱隱有運(yùn)動(dòng)等時(shí)性的痕跡。應(yīng)引導(dǎo)學(xué)生這一結(jié)果還需實(shí)驗(yàn)驗(yàn)證。)教師的引導(dǎo):其實(shí),我們所提出的看法都跟平拋運(yùn)動(dòng)的規(guī)律有關(guān)系。那么平拋運(yùn)動(dòng)究竟有怎樣的規(guī)律呢?以前學(xué)過的直線運(yùn)動(dòng)知識(shí)還能用于今天的內(nèi)容嗎?由此逐步使學(xué)生意識(shí)到分析平拋運(yùn)動(dòng)須采用運(yùn)動(dòng)合成與分解這一方法。三、實(shí)驗(yàn)驗(yàn)證自主探究(15分鐘) 物理是實(shí)驗(yàn)科學(xué),多媒體教學(xué)不能代替實(shí)驗(yàn)。本教學(xué)設(shè)計(jì)的第三個(gè)環(huán)節(jié)是實(shí)驗(yàn)驗(yàn)證,鼓勵(lì)學(xué)生自主探究。引導(dǎo)學(xué)生根據(jù)自己的猜想(實(shí)驗(yàn)?zāi)康模┰O(shè)計(jì)實(shí)驗(yàn)進(jìn)行驗(yàn)證。(1)介紹手持式平拋豎落儀,引導(dǎo)并小結(jié)實(shí)驗(yàn)要領(lǐng):聽兩小球下落聲音判斷其下落時(shí)間。體會(huì)合運(yùn)動(dòng)和分運(yùn)動(dòng)是等時(shí)的。

  • 人教版新課標(biāo)高中物理必修2曲線運(yùn)動(dòng)說課稿2篇

    人教版新課標(biāo)高中物理必修2曲線運(yùn)動(dòng)說課稿2篇

    1、舉例:2、結(jié)論:(1)物體的運(yùn)動(dòng)軌跡是曲線的運(yùn)動(dòng)叫曲線運(yùn)動(dòng)。(2)曲線運(yùn)動(dòng)中速度方向是時(shí)刻改變的。(二)、曲線運(yùn)動(dòng)方向:1、質(zhì)點(diǎn)在某一點(diǎn)(或某一時(shí)刻)的速度的方向是在曲線的這一點(diǎn)的切線方向。2、曲線運(yùn)動(dòng)中速度方向是時(shí)刻改變的,因此曲線運(yùn)動(dòng)是變速運(yùn)動(dòng)。(三)、曲線運(yùn)動(dòng)條件:1、演示實(shí)驗(yàn):2、結(jié)論:當(dāng)物體所受的合力的方向跟它的速度方向不在同一直線時(shí),物體就做曲線運(yùn)動(dòng)。七、課堂小結(jié):1、運(yùn)動(dòng)軌跡是曲線的運(yùn)動(dòng)叫曲線運(yùn)動(dòng)。2、曲線運(yùn)動(dòng)中速度的方向是時(shí)刻改變的,質(zhì)點(diǎn)在某一點(diǎn)的瞬時(shí)速度的方向在曲線的這一點(diǎn)的切線上。3、當(dāng)合外力F的方向與它的速度方向有一夾角a時(shí),物體做曲線運(yùn)動(dòng)。八、鞏固訓(xùn)練:1、關(guān)于曲線運(yùn)動(dòng),下列說法正確的是()。A:曲線運(yùn)動(dòng)一定是變速運(yùn)動(dòng);B:曲線運(yùn)動(dòng)速度的方向不斷的變化,但速度的大小可以不變;

  • 人教版新課標(biāo)高中物理必修2萬有引力定律說課稿2篇

    人教版新課標(biāo)高中物理必修2萬有引力定律說課稿2篇

    學(xué)生中存在這樣的問題:既然宇宙間的一切物體都是相互吸引的,那么為什么沒有吸引到一起?為了解決這個(gè)問題,安排了例題2例2、兩物體質(zhì)量都是1kg,相距1m,它們間的萬有引力是多少?通過本題,讓學(xué)生認(rèn)識(shí)到一般物體間的引力極小,不用考慮。那么,質(zhì)量很大的天體為什么沒被吸引到一塊?從而引出下節(jié)課題。4.課堂小結(jié):本節(jié)課,從天體運(yùn)動(dòng)出發(fā),通過推理證明,形成理性認(rèn)識(shí),再結(jié)合例題習(xí)題使學(xué)生的理性認(rèn)識(shí)再反饋到具體事實(shí)。形成實(shí)踐-理論-實(shí)踐的認(rèn)知循環(huán),順應(yīng)了認(rèn)知規(guī)律.。本共設(shè)計(jì)了很多問,能讓學(xué)生想的盡量讓學(xué)生想、能學(xué)生說的盡量讓學(xué)生說、能讓學(xué)生做的盡量讓學(xué)生做,全面發(fā)展學(xué)生的各方面能力。再通過作業(yè)和探究性課題使學(xué)生的思維活動(dòng)在時(shí)空上得以延續(xù)。5.布置作業(yè):布置作業(yè)時(shí)刻意安排引入:萬有引力、重力、向心力、三者的聯(lián)系,通過引導(dǎo)學(xué)生對(duì)比結(jié)果,從中發(fā)現(xiàn)問題:萬有引力與重力向心力的關(guān)系與區(qū)別,為下節(jié)知識(shí)的難點(diǎn)突破作好了鋪墊。

  • 人教版新課標(biāo)高中物理必修2追尋守恒量—能量說課稿2篇

    人教版新課標(biāo)高中物理必修2追尋守恒量—能量說課稿2篇

    [小結(jié)]師:下面同學(xué)們概括總結(jié)本節(jié)所學(xué)的內(nèi)容。請一個(gè)同學(xué)到黑板上總結(jié),其他同學(xué)在筆記本上總結(jié),然后請同學(xué)評(píng)價(jià)黑板上的小結(jié)內(nèi)容。 (學(xué)生認(rèn)真總結(jié)概括本節(jié)內(nèi)容,并把自己這節(jié)課的體會(huì)寫下來、比較黑板上的小結(jié)和自己的小結(jié),看誰的更好,好在什么地方。) 生:本節(jié)課我們通過伽利略理想斜面實(shí)驗(yàn),分析得出了能量以及動(dòng)能和勢能的概念,從能量的相互轉(zhuǎn)化角度認(rèn)識(shí)到,在動(dòng)能和勢能的相互轉(zhuǎn)化過程中,能的總量保持不變,即能量是守恒的。通過這節(jié)課的學(xué)習(xí),使我們建立起了守恒的思想。 點(diǎn)評(píng):總結(jié)課堂內(nèi)容,培養(yǎng)學(xué)生概括總結(jié)能力。 教師要放開,讓學(xué)生自己總結(jié)所學(xué)內(nèi)容,允許內(nèi)容的順序不同,從而構(gòu)建他們自己的知識(shí)框架。[布置作業(yè)]課后討論 P3“問題與練習(xí)”中的問題。[課外訓(xùn)練]以豎直上拋的小球?yàn)槔f明小球的勢能和動(dòng)能的轉(zhuǎn)化情況。在這個(gè)例子中是否存在著能的總量保持不變?

  • 人教版新課標(biāo)高中物理必修2宇宙航行說課稿2篇

    人教版新課標(biāo)高中物理必修2宇宙航行說課稿2篇

    了解了第一宇宙速度及其意義之后,繼續(xù)提出問題,讓學(xué)生思考:如果衛(wèi)星的發(fā)射速度大于第一宇宙速度7.9km/s ,會(huì)出現(xiàn)什么情況呢?先讓學(xué)生們大膽猜想,然后再向?qū)W生們介紹 衛(wèi)星發(fā)射速度大于第一宇宙速度后的幾種可能情況,引出第二宇宙速度和第三宇宙速度,讓學(xué)生對(duì)第二、第三宇宙速度及其意義做定性了解。并通過演示Flash課件,幫助學(xué)生理解、加深學(xué)生印象。在學(xué)生對(duì)人造衛(wèi)星的原理及發(fā)射衛(wèi)星的速度條件有了初步了解后,接下來引導(dǎo)學(xué)生對(duì)衛(wèi)星的運(yùn)動(dòng)規(guī)律作進(jìn)一步的探索。實(shí)際上衛(wèi)星并不是沿地表水平發(fā)射的,而是用火箭多次加速送到一定的高度的軌道后,再沿以地心為圓心的圓周的切線運(yùn)行的。讓學(xué)生繼續(xù)深入思考:衛(wèi)星在不同高度繞地球運(yùn)行時(shí)的速度怎么求呢?將衛(wèi)星送入低軌道和高軌道所需的速度都一樣么?如果把不同軌道上的衛(wèi)星繞地球的運(yùn)動(dòng)都看成是勻速圓周運(yùn)動(dòng),引導(dǎo)學(xué)生利用已學(xué)的萬有引力和圓周運(yùn)動(dòng)的相關(guān)知識(shí),探究衛(wèi)星繞地球的運(yùn)行規(guī)律。

  • 人教版新課標(biāo)高中物理必修2重力勢能說課稿2篇

    人教版新課標(biāo)高中物理必修2重力勢能說課稿2篇

    (四)、彈性勢能(據(jù)課時(shí)情況,可以讓學(xué)生自學(xué))生活中還有一些物體既沒有運(yùn)動(dòng)也沒有很大的高度卻同樣“儲(chǔ)存”著能量,哪怕它只是孩童手里的玩具(圖片:彈弓)。張緊的弓一撒手就會(huì)對(duì)箭支做功改變它的動(dòng)能,松弛的弓有這樣的本領(lǐng)嗎?同樣是弓前者具有能量而后者沒有,那么什么情況下物體才具有這種能量呢?張緊的弓在恢復(fù)原狀的過程會(huì)對(duì)外做功,但是拉斷的弓還能有做功的本領(lǐng)嗎?1.定義:物體由于發(fā)生彈性形變而具有的能量叫做彈性勢能。2.彈性勢能的大小與哪些因素有關(guān)呢?3、勢能由相互作用的物體的相對(duì)位置決定的能量。重力勢能:由地球和物體間相對(duì)位置決定。彈性勢能:由發(fā)生形變的各部分的相對(duì)位置決定。(五).反饋練習(xí)1. 物體在運(yùn)動(dòng)過程中,克服重力做功50J, 則( )A.重力做功為50JB.物體的重力勢能一定增加50JC.物體的重力勢能一定減少50JD.重力做功為-50J

  • 人教版新課標(biāo)高中物理必修1牛頓第三定律說課稿2篇

    人教版新課標(biāo)高中物理必修1牛頓第三定律說課稿2篇

    問:為什么會(huì)出現(xiàn)這樣的情況,男女生之間的拉力存在著怎樣的大小關(guān)系?進(jìn)一步求證這兩個(gè)力的大小關(guān)系經(jīng)過共同討論,得方案:把兩個(gè)彈簧秤勾在一起,重現(xiàn)拔河比賽,分三種情況進(jìn)行。(通過攝像頭把彈簧秤的讀數(shù)放大)兩彈簧稱勾在一起拉,處于靜止不動(dòng)時(shí)(即拔河比賽,雙方處于僵持狀態(tài))兩彈簧稱勾在一起拉,并向一方運(yùn)動(dòng)(即比賽繩子被拉向一方時(shí)的狀態(tài))3、兩彈簧稱勾在一起拉,一方方向慢慢改變(兩力方向始終在一條直線上)實(shí)驗(yàn)結(jié)論:兩彈簧稱的讀數(shù)的變化總是相同的,大小相等,方向相反。得到牛頓第三定律:追問:既然兩個(gè)力大小相等,那么拔河比賽為什么還存在勝負(fù)之分?講清作用力與反作用力作用的受力物體不同,并和學(xué)生討論如何做才會(huì)獲勝?;貞?yīng)課前問題:“以卵擊石”為什么雞蛋碎?

  • 人教版新課標(biāo)高中物理必修1時(shí)間和位移說課稿2篇

    人教版新課標(biāo)高中物理必修1時(shí)間和位移說課稿2篇

    研究一種物理現(xiàn)象,總是要先從現(xiàn)象的描述入手。機(jī)械運(yùn)動(dòng)作為自然界最簡單和最基本的運(yùn)動(dòng)形態(tài),它所描述的是物體空間位置隨時(shí)間變化的情況。因此,本節(jié)學(xué)習(xí)描述質(zhì)點(diǎn)做機(jī)械運(yùn)動(dòng)需要時(shí)刻、時(shí)間間隔和位移等概念。相當(dāng)一部分高一學(xué)生在具體過程中難以區(qū)別時(shí)刻和時(shí)間間隔。另外,由于思維的定式,在第一次接觸既要考慮大小又要考慮方向的問題時(shí),會(huì)因不適應(yīng)造成學(xué)習(xí)困難。所以,區(qū)別“路程與位移”“時(shí)刻和時(shí)間間隔”是教學(xué)的重難點(diǎn)所在。學(xué)習(xí)這些內(nèi)容的過程與方法對(duì)學(xué)習(xí)速度和加速度可以起到奠定基礎(chǔ)的作用。教學(xué)的對(duì)象是高一的學(xué)生,這一時(shí)期的學(xué)生處在好奇善問、創(chuàng)新意識(shí)強(qiáng)烈的青少年期。對(duì)于生活中出現(xiàn)的各種現(xiàn)象具有濃厚的興趣。但他們的思維還停留在簡單的代數(shù)運(yùn)算階段,對(duì)于矢量和矢量運(yùn)算的理性認(rèn)識(shí)幾乎沒有。且對(duì)生活中出現(xiàn)的時(shí)間、時(shí)刻、時(shí)間間隔等不能做出很好的區(qū)分,對(duì)時(shí)常提及的路程、距離等形成了模糊的前概念。

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