(三)課堂小結(jié)接著進(jìn)行課堂小結(jié),先讓學(xué)生自主總結(jié),教師結(jié)合學(xué)生的總結(jié),補(bǔ)充完善總結(jié)本節(jié)課的知識(shí)。并進(jìn)行感情升華。這樣設(shè)計(jì)課堂小結(jié),是為了讓學(xué)生學(xué)會(huì)自主總結(jié)知識(shí),加深印象,教師總結(jié)幫助學(xué)生理清本課知識(shí)結(jié)構(gòu),并起到升華本節(jié)課的感情基調(diào),落實(shí)教學(xué)目標(biāo)。(四)課堂練習(xí)我將設(shè)計(jì)兩道題讓同學(xué)們做,鞏固課堂知識(shí)。本課題板書設(shè)計(jì)我主要采用大綱的形式展現(xiàn),讓學(xué)生一目了然,便于識(shí)記和理解主干知識(shí)。五、教學(xué)預(yù)測(cè)最后我對(duì)本節(jié)課教學(xué)的效果進(jìn)行預(yù)測(cè):在這個(gè)教學(xué)過程中我都是從學(xué)生生活中感知的現(xiàn)象入手,設(shè)計(jì)情境,預(yù)設(shè)學(xué)生的分析,學(xué)生的體驗(yàn),學(xué)生的感知,教師的點(diǎn)撥等。設(shè)計(jì)問題,學(xué)生自主合作探究,完成教學(xué)!通過這樣的學(xué)習(xí)我想一定會(huì)收到較好的教學(xué)效果,當(dāng)然,在實(shí)際的教學(xué)中,肯定也會(huì)出現(xiàn)一些意想不到的情況,我還會(huì)根據(jù)教學(xué)過程中的動(dòng)態(tài)變化,及時(shí)地調(diào)整和修改預(yù)設(shè)內(nèi)容。
解析:材料是講學(xué)習(xí)型社會(huì)所產(chǎn)生的影響,A項(xiàng)觀點(diǎn)錯(cuò)誤,在當(dāng)前和今后相當(dāng)長(zhǎng)的時(shí)間里,學(xué)校教育仍然是人們獲得知識(shí)的最重要的途徑。B項(xiàng)觀點(diǎn)錯(cuò)誤,終身學(xué)習(xí)只是成就人生目的的手段、途徑,而不是目的本身。D項(xiàng)說法錯(cuò)誤,當(dāng)前我國(guó)社會(huì)的中心工作是經(jīng)濟(jì)建設(shè)。二、問答題5.材料一:日本是公認(rèn)的漫畫大國(guó),日本的動(dòng)漫產(chǎn)業(yè)產(chǎn)值每年230萬億日元,成為日本的第二大支柱產(chǎn)業(yè)。在日本,漫畫比電影、小說有時(shí)甚至比電視或音樂更受歡迎。日本漫畫的熱潮還席卷了世界:日本每年出口到美國(guó)的卡通片價(jià)值就達(dá)5 000億日元,是日本對(duì)美國(guó)鋼鐵出口金額的4倍;漫畫中的人物被迅速?gòu)?fù)制成電子游戲、卡通片及真人演出的節(jié)目。原來只是閑暇時(shí)候消遣的漫畫,正飛速滲透到人們的生活中。值得警惕的是,除了催人奮進(jìn)的精華之外,日本漫畫中也存在暴力、色情、扭曲歷史等諸多糟粕,對(duì)缺乏辨別能力的青少年產(chǎn)生了許多不良影響,更引發(fā)了一系列深刻的社會(huì)問題。
(二)講授新課:1、講授重點(diǎn):文化與經(jīng)濟(jì)、政治的關(guān)系。我首先帶領(lǐng)學(xué)生分析課本上的活動(dòng)探究,了解日常生活中的常見活動(dòng),讓學(xué)生們觀看視頻材料幫助學(xué)生對(duì)文化活動(dòng)、經(jīng)濟(jì)活動(dòng)、政治活動(dòng)進(jìn)行辨別和分類。然后讓學(xué)生們舉例說明,綜合探究,最后通過集體討論得出文化與經(jīng)濟(jì)政治的關(guān)系:經(jīng)濟(jì)是基礎(chǔ),政治是經(jīng)濟(jì)的集中表現(xiàn),文化是經(jīng)濟(jì)和政治的反映,一定的文化由一定的經(jīng)濟(jì)和政治決定,又反作用于政治和經(jīng)濟(jì)。這個(gè)問題是本課重點(diǎn)。要引導(dǎo)學(xué)生循序漸進(jìn),集體討論,得出結(jié)論。2、突破難點(diǎn):(1)文化與經(jīng)濟(jì)政治相互交融,在時(shí)代發(fā)展的進(jìn)程中。首先播放上海世博會(huì)視頻,讓學(xué)生體會(huì)文化、經(jīng)濟(jì)、政治活動(dòng),另外我會(huì)引導(dǎo)學(xué)生積極舉生活中的事例,來說明問題,讓學(xué)生學(xué)會(huì)舉一反三,充分理解這一知識(shí),讓學(xué)生明白文化與經(jīng)濟(jì)、政治的聯(lián)系,讓學(xué)生清楚文化滲透的力量有多大,幫助學(xué)生樹立反對(duì)文化霸權(quán)主義的意識(shí)。
(二)引入內(nèi)容1、播放幻燈片,從名言引出思考,什么是文化,如何理解文化?學(xué)生探究,既可質(zhì)疑,也可談自己對(duì)文化的理解2、幻燈片,以三組幻燈,分三個(gè)階段,學(xué)生分別通過小組討論的形式,歸納總結(jié)文化現(xiàn)象的三個(gè)特征3、根據(jù)對(duì)文化現(xiàn)象的認(rèn)識(shí),歸納總結(jié)文化的內(nèi)涵及外延小活動(dòng):把不是文化的山、水、樹,由幾組同學(xué)畫出來,體會(huì)文化的含義4、一組判斷題,哪些是文化的,哪些不是5、理解文化的特點(diǎn)首先,根據(jù)前面,總結(jié)文化現(xiàn)象的特征,歸納出文化的普通性及特殊性其次,播放視頻,歸納總結(jié)文化是人類特有的現(xiàn)象第三,根據(jù)教材材料,小組探究總結(jié),文化是后天習(xí)得的第四,借助小活動(dòng)的材料,歸納,文化需要一定的物質(zhì)載體6、文化的作用首先、觀看視頻,小組探究總結(jié),文化對(duì)于人的影響其次,觀看視頻,小組探究總結(jié),文化對(duì)社會(huì)的影響
3、文化的力量。為了使學(xué)生能辨證地分析文化的力量,我設(shè)計(jì)了兩個(gè)問題進(jìn)行探討:(1)是不是任何文化都能起促進(jìn)作用?(2)你在聽或唱國(guó)歌時(shí)感受到一種什么樣的力量?這樣,學(xué)生在對(duì)比中學(xué)會(huì)辨證地分析文化的力量——先進(jìn)的、健康的文化能促進(jìn)社會(huì)發(fā)展和個(gè)人成長(zhǎng);落后的、腐朽的文化則阻礙社會(huì)發(fā)展和個(gè)人成長(zhǎng)。同時(shí)還能提高學(xué)生的文化賞析能力,從而引導(dǎo)學(xué)生裝自覺參加健康有益的文化活動(dòng),抵制不良文化的影響,投身到社會(huì)主義精神文明建設(shè)中去。關(guān)于課堂練習(xí),我準(zhǔn)備了5個(gè)針對(duì)性比較強(qiáng)的選擇題,從而加深鞏固本框題的重難點(diǎn)知識(shí)。最后,播放歌曲《走進(jìn)新時(shí)代》,展示本課知識(shí)結(jié)構(gòu),指出本框題需重點(diǎn)掌握的問題,結(jié)束本課教學(xué)。課后作業(yè),我設(shè)計(jì)了這樣一個(gè)辨析的題目:文化是人們創(chuàng)造的全部財(cái)富的總和,它是人類特有的現(xiàn)象。
2. let the Ss complete the forms paragraph by paragraph. Purpose here is to help Ss to get the habit of reading a passage as a whole, and pay attention to the organization of the text, as a result the Ss will fully understand the whole passage.3. ask Ss to retell the passage with the help of the key words in the form.Since the Ss in the class are in different levels, so I let them to fill in the blank to understand the meaning of the words and phrases better. ( That’s all for the while-reading. Now let’s move to the fifth step.)Step V: Post-reading (10mins) ---DiscussionIn this part students are asked to discuss in groups and list Wang Kun’s and Wang Wei’s attitudes about the trip. After that, Ss are encouraged to express their attitudes with the whole class. Collect their answers and don’t forget to praise them even if their answers may not be perfect.In this activity, discussion provides a vivid and active learning environment for Ss to communicate in English with newly learned language items. (Finally it comes to the homework.)StepⅥ: Homework (1min)1. Ss are required to read the text again after class and figure out the meaning of some complex sentences.2. Do the exercises on P19; This can help Ss to consolidate what they’ve learnt and make preparation for the next lessonPart4. Blackboard design.(說板書設(shè)計(jì))On the top, there is the title of this lesson. On the left, there are main ideas for each paragraph. On the right, there are some new words and expressions.Unit 3 Travel journalJourney down the MekongMain idea of each para.:Para1: deciding to take a great bike trip along the Mekong river.Para2: Different attitudes between Wang kun and Wang wei.
Textbook: Senior English for China (Book 4), by Liu Daoyi Time Allotment: 1 period (40 minutes)Date: March 20, 2014Teaching aids: blackboard, Multi-media, Power Point, chalk I. Text Analysis (教材分析)This unit is about body language, and the text selected in the reading part demonstrates the difference and similarity of body language in many parts of the world. Through learning this passage, students are required to raise their awareness of using body language in different parts of the world. As body language is closely related to our daily life, it is easy to arouse students’ interest in learning this text. Reading skills and speaking training are designed around the text.II. Teaching Objectives (教學(xué)目標(biāo))By the end of the lesson, students will be able to:1. Language Skill Objective(語言技能目標(biāo)): develop reading ability (skimming and scanning)as well as speaking ability.2. Cultural Knowledge Objective(文化知識(shí)目標(biāo)): know about the cultural differences of using body language.3. Affective Objective(情感目標(biāo)): increase students’ awareness of using body language correctly in different cultures. III.Teaching Focuses and Difficulties(教學(xué)重點(diǎn)和難點(diǎn))1. Teaching Focuses(教學(xué)重點(diǎn)): the difference and similarity of body language in many parts of the world.2. Teaching Difficulties(教學(xué)難點(diǎn)): develop students’ reading abilities of skimming and scanning and ask the students to show their opinions with fluent English.
(3)v. 給:提出;展現(xiàn),顯現(xiàn)present sb. with sth. ; present sth. to sb. 把. . 交給;頒發(fā);授予present sth. (for sth. )/present sth. to sb. e. g. Om his birthday, his friends presented him a collection of stamps. 在他生日時(shí),他的朋友們送給他一套郵票作為禮物。The sword was presented by the family to the museum. 這家人把寶劍捐贈(zèng)給了博物館。The committee will present the final report to Parliament in June. 委員會(huì)將在六月向議會(huì)提交最后的報(bào)告。You need to present yourself better. 你需要更善于展現(xiàn)自己。It is essential that we present a united front. 至關(guān)重要的是我們要表現(xiàn)得更加團(tuán)結(jié)。Step 4 ConsolidationT:Now that we have got a general idea of these words and phrases. Lets make up some sentences using them to master them. Suggested sentences:1. Your duties include typing letters and answering the telephone. 2. It is one of the greatest roles that she has played. 3. A large number of people have applied for the job. 4. The number of the panda is declining. 5. I'11 go there, even if I have to walk. 6. He came up to me to ask for a light. 7. The novel is about a family who can't communicate with each other. 8. He based his plan on interests of most people. 9. Why doesn't he make use of his singing talent?Step 5 Summary and homeworkT:Today we dealt with several new words and phrases. After class I hope that youcan read them again and again to keep them in mind. That's all for today. You aredismissed.
Good morning, distinguished judges:It’s my honor to talk about my teaching ideas with you. Today my topic is Women of Achievement. My presentation consists of six parts: the analysis of teaching material and student, teaching aims, key and difficult points, teaching and studying method, teaching procedures and blackboard design.First, let’s focus on the analysis of teaching material. This lesson is from New Senior English for China Student’s Book 4 Unit 1, the reading part. The main topic of the passage is the introduction of a student of Africanwildlife. After this lesson, the students will learn more information about her studying chimps in Africa, and their reading and speaking abilities can be developed as well.The next part is the analysis of students. My students are in senior high students. They have learnt English for many years, they’ve known many words and sentences, but their speaking and reading abilities are still not very good. So I will practice their speaking and reading abilities through different exercises.According to the New Standard Curriculum and the present situation, I set the teaching aims as follows: firstly, knowledge aims. Students can grasp some new words, such as worthwhile, move off. Moreover, students can understand the content of the passage and get familiar with the topic of studying chimps in wildlife. Secondly, ability aims. Students can use reading strategies such as skimming and scanning in reading process. Thirdly, emotional aims. Students can have the awareness of protecting animals and care about animals.Based on the above analysis, the key point of this lesson is to get the main idea and the detailed information from the passage; the difficult point is to talk about the wildlife protection and use reading strategies.
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.
Language learning needs a context, which can help the learners to understand the language and then can product comprehensible output, so computer has the advantages to make the materials attractive.Part 3 Learning MethodsTask-based, self-dependent and cooperative learningPart 4 Teaching ProcedureStep One Lead-in“Interest is the best teacher.” Therefore, at the very beginning of the class, I should spark the students’ mind to focus on the centre topic “the band”. I’ll show some pictures of food to attract their attention and then bring some questions.Question:What kind of food they like?What should go into a good meal?The answers must relate to the diet. After this, the students will be eager to know something about a balance diet and this is the very time to naturally lead the class into Step 2Step 2 Reading for information: skimming and scanning In this step, I use Task-based Language Teaching method, which can give students a clear and specific purpose while skimming and scanning the context.Task 1 General ideaThe students will be asked to just glance at the title and the pictures of the passage, and then guess what they will read in the text. And they’ll be divided into groups of four to have a discussion.The purpose is to inspire the students to read actively, not passively. In addition, the task is to develop the students’ reading skill by making prediction and to encourage the students to express their thoughts in English and cooperate with each other.Task 2 Main idea of each paragraphCooperative learning can raise the students’ interest and create an atmosphere of achievement. Based on this theory, I divide the whole class into 4 groups to skim the whole text and get the main idea of each paragraph.
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.
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(cè)等高級(jí)思維活動(dòng)才能做出正確的回答。【設(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。
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.
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.
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(zhǎng)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(guó)美好河山的熱愛、對(duì)科技的向往和異國(guó)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。
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(guó)“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(guó)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(guó)的新工業(yè)區(qū)到底怎樣做才能夠獲得成功,簡(jiǎn)單的模仿下我們?nèi)鄙俚挠质鞘裁矗窟@個(gè)問題可以作為拓展,讓學(xué)生寫一篇簡(jiǎn)短的論文作為課后作業(yè)。最后做以簡(jiǎn)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。
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。
(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。
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;