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北師大初中數(shù)學(xué)九年級(jí)上冊(cè)一元二次方程的解及其估算2教案

  • 新人教版高中英語(yǔ)必修1Unit 2 Travelling Around-Reading and Thinking教案

    新人教版高中英語(yǔ)必修1Unit 2 Travelling Around-Reading and Thinking教案

    Good expressions that students can choose to use: help the travelers choose which tour to take1. In my opinion, you could/might choose…, because you prefer to…2. …could be a perfect choice for you, for…3. As far as I am concerned, you would enjoy…, for…4. …would probably suit you, because you enjoy/love/hate doing…Step 5 Passage ConsolidationLanguage appreciation:1. You can then spend three days exploring the rainforest with a local guide and enjoying the plants and animals unique to the rainforest. 在接下來(lái)的三天里,您可以在當(dāng)?shù)貙?dǎo)游的陪同下,深入雨林進(jìn)行探索,欣賞雨林特有的動(dòng)植物。本句主體結(jié)構(gòu)為spend some time doing sth. 2. Inca builders cut stones to exact sizes so that nothing was needed to hold walls together other than the perfect fit of the stones. 印加的建筑工人將石頭切割成精確的尺寸,僅僅憑著石頭間的完美契合,即可穩(wěn)固墻體。本句為so that引導(dǎo)的結(jié)果狀語(yǔ)從句。nothing與the perfect fit為并列成分; other than在句中意為“除了”。Step 6 HomeworkSuppose you will travel to Peru, write a short essay about your three-day tour plan.

  • 新人教版高中英語(yǔ)必修1Unit 2 Travelling Around-Reading for Writing教案

    新人教版高中英語(yǔ)必修1Unit 2 Travelling Around-Reading for Writing教案

    Is there a clear purpose for the trip? :Does each paragraph have a clear main idea? Does the writer use the present continuous tense for future plans?Does the writer use commas, stops, and question marks correctly? Are all the words spelt correctly?Are all the proper nouns capitalized?Revise your draft according to your partner's comments.Step 5:The summary of how to write a travel plan.旅游計(jì)劃是一種常見(jiàn)的應(yīng)用文寫(xiě)作。旅游可分為觀光游、文化游、美食游及探險(xiǎn)游等不同類(lèi)型,因此旅游計(jì)劃也要根據(jù)不同的旅游目的進(jìn)行設(shè)計(jì)。常規(guī)的旅游計(jì)劃需要明確以下幾個(gè)方面的問(wèn)題:Travel planWhen will you leave for? Where is your the destination?How will you get there?What will you do there?How long will you there?Is there a clear purpose for the trip? 為了提升旅行計(jì)劃的層級(jí),還需注意以下幾個(gè)方面的問(wèn)題:1.每段是否有明確清晰的主題;2.用一般現(xiàn)在時(shí)代替一般將來(lái)時(shí);3.用更高級(jí)的形容詞詞匯。例如:表達(dá)“好”時(shí),不要總用“nice”,我們還可以用“smart, clean, excellent, exciting, beautiful, wonderful, clever, famous, grand”等表達(dá)更具有指向性的詞匯;4.用更高級(jí)的動(dòng)詞詞匯。比如:我們可以用“seem stand, lie .get stay, remain, look . sound, become . keep, grow”等代替"be";

  • 新人教版高中英語(yǔ)必修2Unit 1 Cultural Heritage-Listening&Speaking&Talking教案

    新人教版高中英語(yǔ)必修2Unit 1 Cultural Heritage-Listening&Speaking&Talking教案

    Listening and Speaking introduces the topic of “Take part in a youth project”. The listening text is an interview about an international youth cultural heritage protection project. More than 20 high school students from seven countries participated in the project. The reporter interviewed two participants Stephanie and Liu Bin. By listening to the text, students can understand the significance of cultural heritage protection, and teenagers can use their knowledge, combine their own interests and advantages, etc. to participate in the action of cultural heritage protection. Listening and Talking introduces the theme of "Talk about history and culture". The listening text is a dialogue between two tourists and tour guides when they visit the Kremlin, red square and surrounding buildings. The dialogue focuses on the functional items of "starting a conversation", which is used to politely and appropriately attract the attention of the others, so as to smoothly start a conversation or start a new topic. The purpose of this section is to guide students to understand the history and current situation of Chinese and foreign cultural heritage in their own tourism experiences or from other people's tourism experiences, explore the historical and cultural values, and be able to express accurately and appropriately in oral communication.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to participate in cultural heritage protection activities.3. Instruct students to use functional sentences of the dialogue such as “I beg your pardon, but…” “Forgive me for asking, but…" and so on to start the conversation more politely and appropriately.

  • 新人教版高中英語(yǔ)必修2Unit 1 Cultural Heritage-Reading For Writing教案

    新人教版高中英語(yǔ)必修2Unit 1 Cultural Heritage-Reading For Writing教案

    This report is short, concise and has typical news content and language features. The title uses the verb phrases, embodying the characteristics of being concise and general. The introduction is the first two sentences in the first paragraph, describing the general situation of the cultural heritage protection project, including time, place, characters, events and other news elements, so that readers can see the main points of the news report at a glance. The main body is the second and third paragraphs, which report the important historical and cultural value of Mogao Grottoes and the production of Mogao Grottoes Material digital photos, which are of great significance to the inheritance of historical culture and the promotion of international cultural understanding, exchange and cooperation. Direct citation is used in the report, as well as background introduction and other news writing techniques.1. Get students to have a good understanding of some features about a news report by reading the text.2. Instruct students to write a summary about a news report properly using some newly acquired writing skills in this period.3. Develop students’ writing and cooperating abilities.4. Strengthen students’ great interest in writing discourses.1. Stimulate students to have a good understanding of how to a summary about a news report 2. Cultivate students to write a news report properly and concisely.Step 1: Lead in Do you think it is necessary for us to circulate our cultural heritage to the world? Why or why not?Do we need to learn more about other countries’ cultural heritage? Why or why not?Step 2: Read to discover details concerning the main body of the news report.

  • 新人教版高中英語(yǔ)必修2Unit 4 History and Traditions-Reading for Writing教案

    新人教版高中英語(yǔ)必修2Unit 4 History and Traditions-Reading for Writing教案

    Step 1 Lead inThere are many interest of places in the UK. What do you know ?The Big Ben the London Tower the Thames RiverStep 2 Before reading---analyze the titleBeautiful Ireland and its traditionWe know that the article mainly tells about the beauty and traditions of Ireland. Step 3 While reading---Task 1Read the text and answer the following questions.Q1: What makes the Irish countryside exciting and inspiring?Its beauty and how it offers something for all the scenes.Q2: What are the best ways to experience some Irish traditions and cultures?By stopping by a village pub and relaxing with a drink and traditional meal while listening to music and watching dancingQ3: What is the meaning of “breathe in the sweet scent of fresh flowers while birds greet the new day with their morning song ?”It means to not just smell but also breathe in the smell of fresh flowers early in the morning as the birds sing their first song of the new day.Q4: What are the best ways to experience Chinese traditions and customs ?By travelling to different places and using all your senses to experience everything and by interacting with local people.Step 4 While reading---Task 2Analyze the descriptive paragraph1. Identify and underline the paragraph’s introductory sentence and the ending sentence.Introductory sentence: Ireland’s beautiful countryside has always had a great influence on its people and traditions.Ending sentence: And if you introduce yourself to a friendly face, you are more than likely to experience local culture and customs first-hand.2. The paragraph talks about different senses in different places. Write the senses and places in the order that they appear.

  • 新人教版高中英語(yǔ)必修2Unit 4 History and traditions教案

    新人教版高中英語(yǔ)必修2Unit 4 History and traditions教案

    這個(gè)地區(qū)有著深厚的傳統(tǒng)。既學(xué)既練:為了讓更多的外國(guó)游客了解中國(guó)文化,欣賞中國(guó)美麗的自然風(fēng)光,感受中國(guó)發(fā)生的巨大變化,某外文雜志社將出版一本英語(yǔ)小冊(cè)子來(lái)介紹中國(guó)的旅游景點(diǎn)。該雜志社邀請(qǐng)你為該小冊(cè)子寫(xiě)一篇英語(yǔ)短文來(lái)介紹杭州,內(nèi)容包括:1.杭州的位置(中國(guó)東南部)、面積(16 000多平方公里)及歷史(2 200多年)等;2.杭州的旅游特色(自然風(fēng)景、傳統(tǒng)文化、特色小吃等);3.希望更多的游客來(lái)杭州參觀。注意:1.詞數(shù)80左右;2.可適當(dāng)增加細(xì)節(jié),以使行文連貫。Located in the southeast of China, Hangzhou is a beautiful city.Dating back more than 2,200 years, Hangzhou covers an area of more than 16,000 square kilometers.In Hangzhou, you can visit the West Lake, whose scenery is fascinating.In addition, you can’t miss its cultural relics and historical sites, from which you will learn more about excellent Chinese traditional culture and traditions.In Hangzhou, the special snacks are famous and visitors from different parts of the world think highly of them.As a tourist attraction, Hangzhou attracts a large number of visitors from home and abroad every year.Once you come to China, Hangzhou is a scenic spot you can’t miss.

  • 新人教版高中英語(yǔ)必修2Unit 5 Music-Listening&Speaking&Talking教案

    新人教版高中英語(yǔ)必修2Unit 5 Music-Listening&Speaking&Talking教案

    choir memberspeople to run food stands people to sell festival ticketspeople to sell music CDspeople to set up equipmentmusical performersStep 2: Listen to the announcement again and answer the questions. ? 1. What kind of songs will Grace Davis sing at the festival?? 2. Who can try out as a performer?? 3. What can those who think they do not have musical talent do?? 4. How can students volunteer to take part?? Talking about preferences:? Would you prefer doing ..?? What would you prefer to do?? Would you rather do .... or ….?? What would you rather do?? I'd prefer .... to ..? I'd rather have ... than .. Step 3: Speaking ProjectWork in groups. Role-play the conversation or make a new one.? Debbie: Where have you been? You missed the announcement about the music festival.? John: I was at the doctor's office. Music festival?? Frank: Yes, it's going to be next month on the school sports field. John, you can play the piano. How about playing it at the festival?? John: Well, I'd rather play the violin. I can play Liang Zhu.? Frank: Wow! Sounds good. What about you, Debbie? ? Debbie: Actually, I don't have much musical ability. I'd prefer just to help out with the crowds.? Frank: You can sell tickets or work at a food stand.? John: So can I assume that the aim of the festival is to raise money?? Debbie: Yes. All of the money will go to charity.

  • 新人教版高中英語(yǔ)必修2Unit 5 Music-Listening and Speaking教案

    新人教版高中英語(yǔ)必修2Unit 5 Music-Listening and Speaking教案

    This lesson is about music. Students can classify the types of music through the instruments and its sound and can talk about their preferences about music, even join some activities and play a role in them according to their musical talents. On the basis, they are guided to use the languages to express their preferences and some plosive sounds and their rules.1. Classify the music types through the instruments and its sound.2. Listen and understand what the speakers’ preferences are and the reasons; talk about their own preferences and give their own reasons, using these sentences: “What kind of music do you like? And why? “ “Because it makes/gives me energy/peaceful.../touches my heart...”.3. Learn some plosives and the rules.4. Join some activities and play a role in them according to the talents. 1. Listen and understand what the speakers’ preferences are and the reasons;2. talk about their own preferences and give their own reasons, using these sentences: “What kind of music do you like? And why? “ “Because it makes/gives me energy/peaceful.../touches my heart...”.3. Learn some plosives and incomplete plosives and its rules.Step 1 Lead inPoint at the pictures on P50 and ask Q1: What are the people doing in the pictures below?Q2: What kind of music they are?Then play the MP3s one by oneStep 2 ListeningTask 1: A reporter from the school newspaper is interviewing students about music. Listen to the interviews. Draw lines between the words to make complete sentences. Some words will not be used.

  • 新人教版高中英語(yǔ)選修1Unit 2 Looking into the Future教案

    新人教版高中英語(yǔ)選修1Unit 2 Looking into the Future教案

    【設(shè)計(jì)意圖】以“新科技是一把雙刃劍”為主題開(kāi)展討論活動(dòng)。這個(gè)話題比較大,所以給了一定的限制,首先需要以智能家居為例來(lái)闡述科技發(fā)展對(duì)未來(lái)生活產(chǎn)生的影響,然后列舉其優(yōu)點(diǎn)和缺點(diǎn),最后就以上現(xiàn)象發(fā)表自己的觀點(diǎn)。這個(gè)活動(dòng)是對(duì)整個(gè)文本的創(chuàng)意性總結(jié)與意義的升華,留給學(xué)生一定的想象空間,學(xué)生借此機(jī)會(huì)可以運(yùn)用文本內(nèi)容和語(yǔ)言表達(dá)自己對(duì)科技發(fā)展的看法和態(tài)度。Assignments:1. Finish Exercise 4 on Page 15 of the textbook.A smart home is one that integrated computers into the structure of the building itself. In this way, many of the things that we now do ourselves become automatic. For example, the smart home could control the air conditioning and lights so that you would no longer have to turn switches on and off, and so that your home would be more energy-efficient. The smart home could also monitor itself to make sure that everything is working as it should, and send you warnings if there is a problem. Such smart homes could even be programmed to detect your health problems, and then give you reasonable advice as to the food you should eat or if you should see a doctor. So, in a sense, smart homes will lead us to living smarter lives.2.Create a smart function for your home, and share your creation in the next period.

  • 新人教版高中英語(yǔ)選修3Unit 2 Healthy Lifestyle教案

    新人教版高中英語(yǔ)選修3Unit 2 Healthy Lifestyle教案

    Activity 4: Figuring out the structure and the writing purpose 本活動(dòng)為實(shí)現(xiàn)課時(shí)目標(biāo)2。 1.Read Paragraph 6 and think about its main idea and the writer’s writing purpose. Q1: If you were the author, how would you end your article? “For young people, there is plenty of time to change bad habits. However, there is no “magic pill” or delete button that will help you; you have to think about your bad habits and decide on some changes. You have the power to build a happy and healthy life full of good habits!” Q2: What is Paragraph 6 mainly about? (Possible answer: to appeal to young people including teenagers to change bad habits and live a happy and healthy life.) 2.Think about the writer’s writing purpose and share opinions. Q1: What is the writing purpose? Work in pairs and figure it out. (Possible answer: On the one hand, the passage is written to help teenagers change their bad habits and live a healthy lifestyle. On the other hand, it provides us with a scientific way to identify and analyse our problems objectively, thus strengthening our resolve to tackle the seemingly common yet tough problems in our lives.) 【設(shè)計(jì)意圖】 步驟1旨在預(yù)測(cè)和驗(yàn)證文章最后一段主要內(nèi)容,梳理完整的語(yǔ)篇結(jié)構(gòu),步驟2旨在思考和討論作者的寫(xiě)作目的。教師也可根據(jù)學(xué)生課堂反應(yīng)情況融入對(duì)語(yǔ)篇人稱(chēng)多次轉(zhuǎn)換的思考。

  • 新人教版高中英語(yǔ)選修4Unit 2 Iconic Attractions教案

    新人教版高中英語(yǔ)選修4Unit 2 Iconic Attractions教案

    幫助學(xué)生通過(guò)討論與對(duì)主題的提升,反思自己的旅游方式,以便做出更優(yōu)化的安排,在今后的旅程中有更多的收益。 Activity 2: Further discussion of the 6 elements above and supplement of more background knowledge 本活動(dòng)為實(shí)現(xiàn)課時(shí)教學(xué)目標(biāo)2。 1.Target Q: The writer’s clear target of traveling, meeting the people and experiencing the culture, is closely related to his major in social studies. Then what is social studies? Social studies is a part of a school or college curriculum concerned with the study of social relationships and the functioning of society and usually made up of courses in history, government, economics, civics, sociology, geography, and anthropology. (Dictionary by Merriam-Webster) Reflection: When you go out to travel, what targets do you usually have in mind? 2.Research Q: Suppose you are traveling to Hangzhou during the school holidays, how will you do research on the city? (surf the internet, read books or travel brochures, consult friends, ...) What information will you be interested to know? (location, iconic sites, local cuisines, interesting customs, shopping malls ...) 3.Abandonment To make the most of time, we have to learn to abandon so that we can accomplish our plan. What will you be interested in doing if you go to Hangzhou if you have a week’s time? What if you only have 2 days? 4~5. Venturing & Experiencing Q: What did he venture to do during the trip? What new experiences did he have? In Sydney: attend his first open-air barbecue, enjoy many different but yummy meals In Catherine: observe the life and customs of the aborigines appreciate their music & try the musical instruments: the didgeridoo

  • 人教版高中地理必修2城市化精品教案

    人教版高中地理必修2城市化精品教案

    1.改善城市環(huán)境:治理河流、控制大氣污染物、大力加強(qiáng)綠化建設(shè)為改善城市環(huán)境,上海市全面展開(kāi)對(duì)大氣、河流、噪聲等多方面的治理工作。如蘇州河的治理、降低城市污染物濃度、加強(qiáng)綠化建設(shè),截止1990年,市區(qū)綠化覆蓋率達(dá)到20.3%。2.改善城市交通、改善居住條件擴(kuò)寬主干道,修建環(huán)城公路,修筑了南浦大橋和揚(yáng)浦大橋,新修城市高架公路和地鐵,改造住宅。3.控制城市規(guī)模建立衛(wèi)星城,開(kāi)發(fā)新區(qū),有效地控制城市中心區(qū)的規(guī)模。思考:什么時(shí)候許多國(guó)家采取措施保護(hù)和改善城市環(huán)境?你認(rèn)為可以采取哪些措施來(lái)保護(hù)和改善城市環(huán)境?上海市保護(hù)和改善城市環(huán)境的措施:上海的衛(wèi)星城有哪些?上海新建了哪個(gè)新區(qū)?目前浦東新區(qū)在上海的地位如何?建立衛(wèi)星城和開(kāi)發(fā)新區(qū)可以起到什么作用?上海市為改善交通條件,做了哪些工作?

  • 人教版高中地理必修2城市內(nèi)部空間結(jié)構(gòu)教案

    人教版高中地理必修2城市內(nèi)部空間結(jié)構(gòu)教案

    過(guò)渡:在實(shí)際生活中,城市內(nèi)部空間結(jié)構(gòu)并非完全按照這一經(jīng)濟(jì)規(guī)律呈現(xiàn),而是更具復(fù)雜性。這說(shuō)明除了經(jīng)濟(jì)因素外,還有很多其他因素在起作用,請(qǐng)大家結(jié)合你的認(rèn)識(shí)、圖2.9和案例1:紐約市的少數(shù)民族區(qū)談?wù)勀愕目捶?。?)其他因素I收入——形成不同級(jí)別住宅區(qū)的常見(jiàn)原因。有能力支付昂貴租金和選擇最佳居住環(huán)境的人,其居住地往往形成高級(jí)住宅區(qū)。II知名度——城市內(nèi)某些地區(qū)在歷史、文化或經(jīng)濟(jì)方面具有很高的聲譽(yù),這往往會(huì)吸引更多新的住宅或商場(chǎng)建在該處,以提高其知名度。III種族聚居區(qū)的形成——在有些城市的某一區(qū)域內(nèi),如果某個(gè)種族或宗教團(tuán)體占優(yōu)勢(shì),就可能形成種族聚居區(qū)。如紐約市的唐人街、哈林區(qū)、小意大利區(qū)等。IV歷史因素——城市的建筑物和街道設(shè)計(jì)可以維持久遠(yuǎn),早期的土地利用方式對(duì)日后的功能分區(qū)有著深遠(yuǎn)的影響。

  • 人教版高中地理必修2人口合理容量教案

    人教版高中地理必修2人口合理容量教案

    (1)請(qǐng)同學(xué)們結(jié)合日常生活實(shí)例和教材分析說(shuō)明人類(lèi)要在世界各地消除貧困并保持人口的合理容量任務(wù)的艱巨性?(2)采取何種措施才能更好的解決這一問(wèn)題的出現(xiàn)?教師總結(jié)(1)現(xiàn)實(shí)中的人口問(wèn)題(如人口過(guò)快增長(zhǎng)、人口城市化和人口老齡化等)引發(fā)了嚴(yán)重的資源問(wèn)題和環(huán)境問(wèn)題。①發(fā)達(dá)國(guó)家的人均消耗資源量很大,索取資源和轉(zhuǎn)嫁有害生產(chǎn)的地域超出了本國(guó)的范圍。②發(fā)展中國(guó)家不僅人口數(shù)量多,人均消費(fèi)水平低,而且一些國(guó)家的人口仍在快速增長(zhǎng)。若在現(xiàn)有的經(jīng)濟(jì)基礎(chǔ)上,把發(fā)展中國(guó)家人均生活質(zhì)量提高到與發(fā)達(dá)國(guó)家相當(dāng)?shù)乃?,所引發(fā)的資源短缺和環(huán)境問(wèn)題將會(huì)相當(dāng)嚴(yán)重,解決的難度也很大。(2)I就整個(gè)世界來(lái)說(shuō):①?lài)?guó)際社會(huì)要倡導(dǎo)各國(guó),尤其發(fā)展中國(guó)家要盡最大可能把人口控制在合理的規(guī)模之內(nèi);②建立公平的秩序,保證大多數(shù)人擁有不斷追求高水平生活質(zhì)量的平等權(quán)利。

  • 人教版高中地理必修2工業(yè)地域類(lèi)型教案

    人教版高中地理必修2工業(yè)地域類(lèi)型教案

    1.生產(chǎn)上的聯(lián)系:有投入——產(chǎn)出的關(guān)系工業(yè)生產(chǎn)的過(guò)程復(fù)雜,工序繁多,往往需要經(jīng)過(guò)多家工廠的加工才能完成一種產(chǎn)品的生產(chǎn)過(guò)程。因此,在這些工廠之間就存在著產(chǎn)品與原料的聯(lián)系。一家工廠生產(chǎn)的產(chǎn)品是另一家工廠的原料,這兩家工廠之間就形成了工序上的工業(yè)聯(lián)系。2.非生產(chǎn)上的聯(lián)系:如地理空間上的聯(lián)系布局在同一個(gè)工業(yè)區(qū)內(nèi),共同利用工業(yè)區(qū)的道路、供水、供電、通信等基礎(chǔ)設(shè)施以及其他生產(chǎn)、生活服務(wù)設(shè)施,或者共同利用當(dāng)?shù)亓畠r(jià)的勞動(dòng)力,形成了空間利用上的工業(yè)聯(lián)系。我國(guó)許多地方的經(jīng)濟(jì)技術(shù)開(kāi)發(fā)區(qū)就是建立在這種工業(yè)聯(lián)系基礎(chǔ)上的。(二)工業(yè)集聚1.形成具有工業(yè)聯(lián)系的一些工廠往往近距離地聚集起來(lái),形成工業(yè)集聚現(xiàn)象。2.工業(yè)集聚可獲得效應(yīng)(1)工業(yè)集聚可以加強(qiáng)企業(yè)間的信息交流和技術(shù)協(xié)作,降低中間產(chǎn)品的運(yùn)輸費(fèi)用和能源消耗,進(jìn)而降低生產(chǎn)成本,提高生產(chǎn)效率和利潤(rùn),取得規(guī)模效益。

  • 人教版新課標(biāo)高中物理必修1彈力教案2篇

    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(duì)物體的支持力,都是支持物因發(fā)生形變而對(duì)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(shū)書(shū)由于重力的作用而壓迫桌面,使書(shū)和桌面同時(shí)發(fā)生微小形變,要恢復(fù)原狀,對(duì)桌面產(chǎn)生垂直于桌面向下的彈力f1,這就是書(shū)對(duì)桌面的壓力;桌面由于發(fā)生微小的形變,對(duì)書(shū)產(chǎn)生垂直于書(shū)面向上的彈力f2,這就是桌面對(duì)書(shū)的支持力。學(xué)生分析:靜止地放在傾斜木板上的書(shū),書(shū)對(duì)木板的壓力和木板對(duì)書(shū)的支持力。并畫(huà)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(shí),懸繩對(duì)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(shí)發(fā)生微小的形變。重物由于發(fā)生微小的形變,對(duì)懸繩產(chǎn)生豎直向下的彈力f1,這是物對(duì)繩的拉力;懸繩由于發(fā)生微小形變,對(duì)物產(chǎn)生豎直向上的彈力f2,這就是繩對(duì)物體的拉力。

  • 人教版新課標(biāo)高中物理必修1摩擦力教案2篇

    人教版新課標(biāo)高中物理必修1摩擦力教案2篇

    l.知識(shí)與技能:(1)知道摩擦力產(chǎn)生的條件。(2)能在簡(jiǎn)單問(wèn)題中,根據(jù)物體的運(yùn)動(dòng)狀態(tài),判斷靜摩擦力的有無(wú)、大小和方向;知道存在著最大靜摩擦力。(3)掌握動(dòng)磨擦因數(shù),會(huì)在具體問(wèn)題中計(jì)算滑動(dòng)磨擦力,掌握判定摩擦力方向的方法。(4)知道影響到摩擦因數(shù)的因素。2.過(guò)程與方法:通過(guò)觀察演示實(shí)驗(yàn),概括出摩擦力產(chǎn)生的條件及摩擦力的特點(diǎn),培養(yǎng)學(xué)生的觀察、概括能力。通過(guò)靜摩擦力與滑動(dòng)摩擦力的區(qū)別對(duì)比,培養(yǎng)學(xué)生分析綜合能力。3.情感態(tài)度價(jià)值觀:在分析物體所受摩擦力時(shí),突出主要矛盾,忽略次要因素及無(wú)關(guān)因素,總結(jié)出摩擦力產(chǎn)生的條件和規(guī)律。二、重點(diǎn)、難點(diǎn)分析1.本節(jié)課的內(nèi)容分滑動(dòng)摩擦力和靜摩擦力兩部分。重點(diǎn)是摩擦力產(chǎn)生的條件、特性和規(guī)律,通過(guò)演示實(shí)驗(yàn)得出關(guān)系f=μN(yùn)。2.難點(diǎn)是學(xué)生有初中的知識(shí),往往誤認(rèn)為壓力N的大小總是跟滑動(dòng)物體所受的重力相等,因此必須指出只有當(dāng)兩物體的接觸面垂直,物體在水平拉力作用下,沿水平面滑動(dòng)時(shí),壓力N的大小才跟物體所受的重力相等。

  • 小班主題活動(dòng)  墻上也有一個(gè)我課件教案

    小班主題活動(dòng) 墻上也有一個(gè)我課件教案

    預(yù)設(shè)目標(biāo):1、穩(wěn)定幼兒的情緒,愿意來(lái)幼兒園,親近老師能隨老師同伴一起游戲活動(dòng)。2、認(rèn)識(shí)班里的同伴和老師知道自己是幼兒園的小朋友。3、在老師的幫助下愿意做自己能做的事情。4、初步培養(yǎng)幼兒生活方面的自理能力。家長(zhǎng)配合:1、堅(jiān)持送孩子來(lái)園。2、為幼兒準(zhǔn)備生活照片。3、及時(shí)與老師溝通孩子的情緒反應(yīng)。

  • 中班語(yǔ)言課件教案:今天我做小廚師

    中班語(yǔ)言課件教案:今天我做小廚師

    活動(dòng)準(zhǔn)備: 小廚師形象圖片一張,“青菜”“雞腿”“肉串”“爆米花”圖片各一張,“炒”“炸”“烤” “爆”字卡一份(教具)、各四份(學(xué)具),布袋16個(gè),廚師帽16只。 活動(dòng)過(guò)程: 一、探討做菜方法,建構(gòu)兒歌。 (一)激趣。 T:“小朋友們看,誰(shuí)來(lái)啦?”(出示小廚師圖片) “你從哪兒看出他是一位小廚師?” “我們一起學(xué)學(xué)小廚師,帶領(lǐng)幼兒邊說(shuō)邊表演‘帶上廚師帽,掛上小圍裙’” “小廚師準(zhǔn)備要做菜了,我們一起跟小廚師學(xué)做菜吧?!? (二)探討四種菜的不同做法。 1、T:“看看第一道學(xué)做什么菜?”(出示青菜圖片) T:“你覺(jué)得這盤(pán)青菜怎么樣?” “這樣綠油油的青菜是怎么做出來(lái)的?”(幼兒自由發(fā)表意見(jiàn),教師有目的引導(dǎo))。 “青菜是怎么做出來(lái)的請(qǐng)幼兒說(shuō)一說(shuō),做一做?!? “原來(lái)這樣綠油油的青菜是炒出來(lái)的呀,我們一起來(lái)炒青菜吧?!保ń處煄ьI(lǐng)幼兒邊做炒的動(dòng)作邊說(shuō)‘炒青菜,炒青菜,炒炒炒’)根據(jù)幼兒實(shí)際情況,練習(xí)幾遍。 T:“青菜是炒出來(lái)的呀?”(教師出示字卡‘炒’) 幼兒認(rèn)讀:“炒”,把字卡貼到青菜的旁邊,“炒青菜”、“炒青菜炒青菜,炒炒炒” 2、T:“我們來(lái)看第二道菜是什么?(雞腿)” T:“你們吃過(guò)這樣的雞腿嗎?吃起來(lái)有什么感覺(jué)?”

  • 中班社會(huì):我為老師做件事課件教案

    中班社會(huì):我為老師做件事課件教案

    2、了解不同崗位的教師及“老師”這一稱(chēng)呼的特定含義。3、了解教師的基本職責(zé)。4、培養(yǎng)幼兒對(duì)教師的感情?;顒?dòng)準(zhǔn)備:l、彩筆、繪畫(huà)紙2、橡皮泥3、錄音機(jī)活動(dòng)步驟:l、討論老師的工作是什么?班級(jí)里的教師每天的工作都是怎樣安排的?2、老師的節(jié)日是哪一天?老師在節(jié)日里可以怎樣慶祝?3、想想除了給學(xué)生上課的人被稱(chēng)為“老師”外,其他還在什么場(chǎng)合稱(chēng)呼別人老師?

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