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新人教版高中英語必修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.
新人教版高中英語必修2Unit 5 Music-Discovering Useful Structures教案一
Step1:自主探究。1．(教材P52)Born(bear) in the USA on 2 January 1970, Whitacre began studying music at the University of Nevada in 1988．2．(教材P52) Moved(move) by this music, he said, “It was like seeing color for the first time．”3．(教材P56)I was very afraid and I felt so alone and discouraged(discourage)．4．(教材P58)Encouraged(encourage) by this first performance and the positive reaction of the audience, I have continued to play the piano and enjoy it more every day．Step2:語法要點精析。用法1：過去分詞作表語1）．過去分詞可放在連系動詞be, get, feel, remain, seem, look, become等之后作表語，表示主語所處的狀態(tài)Tom was astonished to see a snake moving across the floor．湯姆很驚訝地看到一條蛇正爬過地板。Finally the baby felt tired of playing with those toys．終于嬰兒厭倦了玩那些玩具。注意：1）.過去分詞作表語時與被動語態(tài)的區(qū)別過去分詞作表語時，強調(diào)主語所處的狀態(tài)；而動詞的被動語態(tài)表示主語是動作的承受者，強調(diào)動作。The library is now closed．(狀態(tài))圖書館現(xiàn)在關(guān)閉了。The cup was broken by my little sister yesterday．(動作)昨天我妹妹把杯子打碎了。2）感覺類及物動詞的現(xiàn)在分詞與過去分詞作表語的區(qū)別過去分詞作表語多表示人自身的感受或事物自身的狀態(tài)，常譯作“感到……的”；現(xiàn)在分詞多表示事物具有的特性，常譯作“令人……的”。
新人教版高中英語必修2Unit 5 Music-Reading and Thinking教案二
1. Get basic information about Eric; read deeply to understand the history and development of the virtual choir.2. Understand what the function of the virtual choir is and how to make a virtual choir.3. Understand the meaning of some languages in the context of the text through question guidance, such as “Many people do not have close friends or contacts who have the same interest in music.” and so on.Step 1 Leading-in1. Answer the following questions.Q1：Do you know the Apps like Tik Tok and Quick Hand?Q2: Do you want to make a Tik Tok video or a Quick Hand video?2. Play a Tik Tok video Step 2: Understanding the title Q1：What does the title mean ?Q2: Is the article a narration or exposition? Why? Q3: Can you change the title ? If you can, what is the title?Step 3: Scanning the whole text and getting the basic information1. Answer the following questions.Q1：Who came up with the idea for a virtual choir?Q2: Where did Eric studied the musical composition?Q3: What is his song?2. Find the main idea of each paragraph3. Deal with some new words.Step 4: Reading carefully to get detailed informationPara 1 How to make a virtual choir1. PreparationA. tools: a virtual camera; an Internet connectionB. hero/heroin: friends or some individuals who have the same interests2. Process
新人教版高中英語必修2Unit 5 Music-Reading and Thinking教案一
This section focuses on "learning about experiencing music Online". This virtual choir is a new form of music performance. Members from all over the world don't need to love to come to a place. Instead, they use the new technology to model the various parts and wonderful virtual harmony group of music in the family. Students need to understand the main meaning of each paragraph. Finding topic sentences is an important way to understand the general idea of a paragraph. After the topic sentence, it is usually the detail sentence that supports and explains the topic sentence. Some paragraphs have obvious subject sentences, for example, the first sentence of the second paragraph is the subject sentence of the paragraph, and the following sentenceStudents need to pay attention to the topic sentences and key sentences, and then pay attention to how the sentences after the meaning explain, explain and support the topic sentences or key sentences before.1.Guide students to learn about experiencing music online2.Guide students to scan and circle the information in the text.3.Guide students to find the numbers and dates to fill in the timeline.4.Guide students to learn more about music by completing the sentences with the correct forms of the words and phrases. And then make a mind map about the outline of the passage.1. Guide students to pay attention to reading strategies, such as prediction, self-questioning and scanning.2. Help students sort out the main meaning of each paragraph and understand the narrative characteristics of "timeline” in illustrative style.3. Lead students to understand the changes that have been caused by the Internet.
新人教版高中英語必修2Unit 5 Music-Reading for Writing教案二
The Internet celebrity Gao Yifeng. Years ago, he owned 5 companies and the staffs over 1,000, but during the economy crisis, he became nothing but debt. He was so worried that his hair became white overnight. There was a time when he wanted to killed himself. But after listening to the song Start Over by Liu Huan, he decided to cheer himself up. He started a steamed bun shop and gradually became a national chain shops. Now he became successful again.Walter Haddon said, “Music is the medicine of a troubled mind.” Music contains such a pleasant and inspiring force. Music gave him courage and bravery. When he listened to the song, it made his spirit fly like a kite in the wind. Music gave him strength and brought him relief. It was the rock I leant on to become strong and to get through those hard times. I hope none of us have to go through the same kind of suffering that he did. At the same time, we all go through various periods when we feel sad or alone. During those times, music can help us in the same way that it helped him. I hope we all will somehow begin to treasure music and make it a part of our life. Thank you for your listening !5.Revise your writing each other.Does he/she explain how music has changed his/her/someone else’s life?Are some of the rhetorical devices included and used properly ?Does he/she talk about how music makes him/her/someone feel?Is the first word in each sentences capitalised?Does he/she use correct punctuation ?
新人教版高中英語必修2Unit 5 Music-Reading For Writing教案一
(4)Now we have heard a number of outstanding speeches ... 我們已經(jīng)聆聽了許多精彩的發(fā)言……(5)Because we wanted the nations of the world, working together, to deal with ... 因為我們希望全世界各國團結(jié)起來去應對……(6)And if we do not act ... 如果我們不采取行動……(7)Now, I share the concerns that have been expressed ... 我也同意對于……表達的擔心(8)Let us show the world that by working together we can ... 讓我們告訴全世界，通過一起努力我們可以……(9)It is now time for us to ... 是時候我們……(10)And I have always wished that ... 我一直希望……(11)Thank you for letting me share this day with me.感謝你們和我共度這一天。實踐演練：假如你是高中生李華，你校將舉辦一次以“音樂”為主題的演講比賽，請你按照主題，寫下你的演講稿。注意：詞數(shù)100左右。First of all, thank you for listening to my speech. My topic is: love music like love yourself.Music is like the air we need to maintain our normal lives around us. You can't imagine how terrible a world without music would be. Movies and TV shows have no music, only dry conversations and scenes; mobile phones only vibrations; streets only noisy crowds; cafes, western restaurants only depressed meals. What a terrible world it is!As a student, I hope we all can enjoy the fun brought by music in our spare time. Instead of just listening to music, we can even make our own music. Let's enjoy the fun of music!Thanks again for your attention!
新人教版高中英語必修3Unit 2 Morals and Virtues教學設(shè)計二
Activity 41. Students complete the task of activity 4, then teachers and students check the answers. 2. The teacher organized the students to work together and asked them to use the tables and mind maps sorted out before to retold the important choices in Lin Qiaozhi's life and their resultsStep 5 Language points1. The teacher asks the students to read the text carefully, find out the core words and long and difficult sentences in the text and draw lines, understand the use of vocabulary, and analyze the structure of long and difficult sentences. 2. The teacher explains and summarizes the usage of core vocabulary and asks the students to take notes. 3. The teacher analyzes and explains the long and difficult sentences that the students don't understand, so that the students can understand them better. Step 6 Homework1. Read the text again, in-depth understanding of the text; 2. Master the use of core vocabulary and understand the long and difficult sentences. 3. Complete relevant exercises in the guide plan. 1、通過本節(jié)內(nèi)容學習，學生是否理解和掌握閱讀文本中的新詞匯的意義與用法；2、通過本節(jié)內(nèi)容學習，學生能否結(jié)合文本特點總結(jié)林巧稚的人生原則和人格品質(zhì)特征；3、通過本節(jié)內(nèi)容學習，學生能否針對人生抉擇發(fā)表自己的看法；能否全面地、客觀地、理性地看待問題，進而對道德和人性有更加深入的思考和理解。
新人教版高中英語必修3Unit 2 Morals and Virtues教學設(shè)計三
The joke set her crying.這個玩笑使她哭起來。Step 5 ReadingActivity 31. Students read the small text in activity 3. The teacher provides several small questions to check whether students understand the content of the text and the ideographic function of the -ing form in the text.*Where are those people?*Why did Dr Bethune come to China?*How did he help the Chinese people during the war?*What did Chairman Mao Zedong say about him?2. Ss try to rewrite some sentences using the -ing form. Then check the answers. When checking the answers, the teacher can ask different students to read the rewritten sentences and give comments.Answers:1. he became very interested in medicine, deciding to become a doctor.2. …after hearing that many people were dying in the war.3. Helping to organise hospitals, he taught doctors and nurses, and showed people how to give first aid./ He helped to organise hospitals, teaching doctors and nurses, and showing people how to give first aid.4. …praising Dr Bethune as a hero to be remembered in China.Step 6 PracticeActivity 4Students complete grammar activities 2 and 3 on page 69 of the workbook.Step 6 Homework1. Understand and master the functions and usage of the -ing form;2. Finish the other exercises in Using structures.1、通過本節(jié)內(nèi)容學習，學生是否理解和掌握動詞-ing形式作賓語補足語語和狀語語的功能和意義；2、通過本節(jié)內(nèi)容學習，學生能否正確使用動詞-ing形式描述人物的行為、動作及其經(jīng)歷；3、通過本節(jié)內(nèi)容學習，學生能否獨立完成練習冊和導學案中的相關(guān)練習。
新人教版高中英語必修3Unit 2 Morals and Virtues教學設(shè)計四
3.Teachers ask different groups to report the answers to the questions and ask them to try different sentence patterns.The teacher added some sentence patterns for students to refer to when writing.Step 4 Writing taskActivity 51.Write the first draft.Students first review the evaluation criteria in activity 5, and then independently complete the draft according to the outline of activity 4, the answers to the questions listed in the group discussion and report, and the reference sentence pattern.2.Change partners.The teacher guides the students to evaluate their partner's composition according to the checklist of activity 5 and proposes Suggestions for modification.3.Finalize the draft.Based on the peer evaluation, students revise their own compositions and determine the final draft.Finally, through group recommendation, the teacher selects excellent compositions for projection display or reading aloud in class, and gives comments and Suggestions.Step 5 Showing writingActivity 5T call some Ss to share their writing.Step 6 Homework1. Read the passage in this section to better understand the passage.2. Carefully understand the hierarchical structure of the article, and deeply understand the plot of the story according to the causes, process and results;3. Independently complete the relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學習，學生是否理解和掌握閱讀文本中的新詞匯的意義與用法；2、通過本節(jié)內(nèi)容學習，學生能否通過人物言行的對比分析道德故事的深層內(nèi)涵；3、通過本節(jié)內(nèi)容學習，學生能否根據(jù)故事的起因、經(jīng)過和結(jié)果來深入理解故事的情節(jié)，從而了解文章的層次結(jié)構(gòu)；4、結(jié)合現(xiàn)實生活案例發(fā)表自己的見解和看法,寫一篇觀點明確、層次分明的故事評論。
新人教版高中英語必修3Unit 2 Morals and virtues教學設(shè)計一
(2) students are divided into groups according to the requirements of activity 3. Each student shares a story of personal experience or hearing-witnessing kindness, and then selects the most touching story in the group and shares it with the whole class. Before the students share the story, the teacher can instruct them to use the words and sentence patterns in the box to express. For example, the words in the box can be classified:Time order: first of all, then, after that, later, finally logical relationship :so, however, although, butTeachers can also appropriately add some transitional language to enrich students' expression:Afterwards, afterwards, at last, in the end, eventuallySpatial order: next to, far from, on the left, in front ofOtherwise, nevertheless, as a result, therefore, furthermore, in addition, as well asSummary: in a word, in short, on the whole, to sum up, in briefStep 8 Homework1. Understand the definition of "moral dilemma" and establish a correct moral view;2. Accumulate vocabulary about attitudes and emotions in listening texts and use them to express your own views;3. Complete relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學習，學生能否理解理解“道德困境”的定義；2、通過本節(jié)內(nèi)容學習，學生能否通過說話人所表達的內(nèi)容、說話的語氣、語調(diào)等來判斷其態(tài)度和情緒；3、通過本節(jié)內(nèi)容學習，學生能否針對具體的道德困境發(fā)表自己的看法和見解，能否掌握聽力理訓練中的聽力策略。
人教版高中地理必修2城市內(nèi)部空間結(jié)構(gòu)教案
過渡：在實際生活中，城市內(nèi)部空間結(jié)構(gòu)并非完全按照這一經(jīng)濟規(guī)律呈現(xiàn)，而是更具復雜性。這說明除了經(jīng)濟因素外，還有很多其他因素在起作用，請大家結(jié)合你的認識、圖2．9和案例1：紐約市的少數(shù)民族區(qū)談談你的看法。（2）其他因素I收入——形成不同級別住宅區(qū)的常見原因。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)濟方面具有很高的聲譽，這往往會吸引更多新的住宅或商場建在該處，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)，如果某個種族或宗教團體占優(yōu)勢，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)計可以維持久遠，早期的土地利用方式對日后的功能分區(qū)有著深遠的影響。
人教版高中地理必修2工業(yè)地域類型教案
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)的過程復雜，工序繁多，往往需要經(jīng)過多家工廠的加工才能完成一種產(chǎn)品的生產(chǎn)過程。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)、生活服務設(shè)施，或者共同利用當?shù)亓畠r的勞動力，形成了空間利用上的工業(yè)聯(lián)系。我國許多地方的經(jīng)濟技術(shù)開發(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，形成工業(yè)集聚現(xiàn)象。2．工業(yè)集聚可獲得效應（1）工業(yè)集聚可以加強企業(yè)間的信息交流和技術(shù)協(xié)作，降低中間產(chǎn)品的運輸費用和能源消耗，進而降低生產(chǎn)成本，提高生產(chǎn)效率和利潤，取得規(guī)模效益。
人教版高中語文必修2《姓氏源流與文化尋根》教案2篇
據(jù)此，研究者認為我國的姓源于原始社會母系氏族時期，并作為一個血緣家族的稱號。氏隸屬于姓。夏、商、周時期，姓氏作為貴族間區(qū)別不同血緣關(guān)系的一種制度。自秦漢以后，姓氏不分，合二而一。3、大家有沒有聽說過《水滸傳》中一個人物“西門慶”，他姓西門，為什么姓西門呢？他家住在西門這個地方。大家想想東郭先生為何姓東郭？可見有按居住地而得姓。4、現(xiàn)在如果賦予同學們一個神圣的職責，讓你們給一個人賜姓，這個人是殺豬殺雞殺鴨的，你們覺得要給他一個什么樣的姓才合適呢？（自由討論，姓“屠”）明確：這就是姓氏來源的又一種方法，按照職業(yè)取姓。大家想一想有沒有其他按照職業(yè)得姓的姓氏？（巫、卜、陶等）5、大家通過預習有沒有發(fā)現(xiàn)其他獲得姓氏的方法。（國名、自己祖先的字等。）姓在母系氏族社會以后，逐漸增多，來源極廣。主要來源于封國名、謚號、爵位名、官名、居地、職業(yè)等。
人教版高中政治必修3文化在繼承中發(fā)展教案2篇
三、教育在文化傳承中的作用 ★ 教師活動：引導學生閱讀教材46頁內(nèi)容，并思考在文化傳承中，教育有什么作用？★ 學生活動：積極思考并討論問題 1、教育是人類特有的傳承文化的能動性活動，具有選擇、傳遞、創(chuàng)造文化的特定功能，在人的教化與培育上始終扮演著重要的角色。 ★ 2、教育通過對受教育者的“傳道、授業(yè)、解惑”，把文化傳遞給下一代。 教育能夠以濃縮的形式，重演人類在漫長的歷史中走過的認識世界的過程，使人們在有限的學習生涯中獲得既有的文化財富，“站在前人的肩膀上”從事文化創(chuàng)造。 3、隨著教育方式的不斷變革，教育在人類文化的傳承中將產(chǎn)生越來越大的影響?！?2）文化對社會發(fā)展產(chǎn)生深刻影響 ★ 文化作為一種精神力量，對人類社會的發(fā)展產(chǎn)生著深刻的影響，先進的、健康的文化對社會的發(fā)展產(chǎn)生巨大的促進作用，反動的、腐朽沒落的文化則對社會的發(fā)展起著重大的阻礙作用。
人教版高中政治必修3在文化生活中選擇教案2篇
（二）“奧運福娃”探究1、“五福娃”體現(xiàn)了哪些精神？體現(xiàn)了“科技奧運、人文奧運和綠色奧運”的奧運精神也體現(xiàn)了“團結(jié)、奮進、愛好和平”的民族精神。2、“龍”是中華民族的圖騰，我們自稱是龍的傳人，但北京奧運吉祥物里為什么沒有“龍”？“龍”（dragon）在我國是美好的意思，例如龍鳳呈祥，但在西方是魔鬼,很恐怖。北京奧運不僅是中國的奧運，更是世界的奧運，因此，福娃的原形中沒有龍，這就是文化選擇的結(jié)果。（三）感受先進文化1、交流自己最喜愛的文化。2、觀看《千手觀音》，談觀后感。（四）陽光下有陰影1、小品《電腦算命》2、課堂辯論正方：“燒香敬神”是封建迷信活動，不可取反方：“燒香敬神”是精神信仰活動，可取3、提高眼力，拒絕污染了解現(xiàn)實生活中的落后文化、腐朽文化，自覺抵制社會中落后文化、腐朽文化的毒害。
人教版高中語文必修1《新詞新語與流行文化》教案2篇
【教學設(shè)計】一、教學目的：1、引導學生關(guān)注生活，向生活學習語言。2、了解新詞新語，能正確評價和運用新詞新語。二、教學重難點：1、重點：認識并評價新詞新語。2、難點：如何評價新詞新語三、教學用時：一課時四、教學過程預設(shè)（一）導入新課以前如果有人說我可愛，我會很高興：我還是有優(yōu)點的哦?，F(xiàn)在如果有人說我可愛，我就會心里嘀咕了：這是什么意思呀？同學們知道這有什么意思嗎？（可愛=可憐沒人愛）如果大家留心就會發(fā)現(xiàn)，類似這樣的詞語很多，在網(wǎng)上是特別流行，很新穎、獨特，誰來列舉幾個？（點評學生所列舉出的詞語）網(wǎng)絡上有新詞新語，其它媒體（如報刊、電視等）都有新詞新語。關(guān)于新詞新語的概念，一般認為，新近創(chuàng)造出來的詞語，或是舊詞新用，這樣的詞語就叫新詞新語。
人教版高中政治必修3聚焦文化競爭力教案2篇
教學目的：通過學生課前收集資料、課堂展示、小組討論及教師總結(jié)和講解等形式，明確文化競爭力在國際競爭中的地位，感受各國各國日益激烈的文化競爭力，探討如何提升中國特色社會主義文化的競爭力，培養(yǎng)學生的分析解決問題的能力，增強責任意識、科技意識和成才意識。教學時間：1小時課前準備：（1）學生分組收集美國、日本、英國等國家文化產(chǎn)業(yè)的發(fā)展狀況和中國文化走向世界的資料，并要求制成簡單的課件。（2）分組討論課本P23—25的三個探究問題（①運用這些資料，從物質(zhì)和精神兩個方面，說明發(fā)展文化有什么意義。②你還能從社會生活的哪些現(xiàn)象中感受到一個國家的文化競爭力？③今天，中國文化為什么能夠在世界各地贏得尊重與喝彩？），組長整理好討論結(jié)果。
人教版新課標高中地理必修2第二章第三節(jié)城市化教案
[補充]：鄭州是特大城市，我們對燈火通明的夜晚都有深刻的體會，我們都體會過光給他們帶來的好處，而對過多過亮的光帶來的危害則很少認真地思考過，且光污染給都市人們和其他生物和環(huán)境帶來的不利影響也越來越大，所以，我在這兒給同學們補充光污染，目的是提醒他們要增強環(huán)保意識，要理解城市在建設(shè)過程中要減少城市各類活動對環(huán)境的污染；另外，隨著城市的不斷發(fā)展，還可能會產(chǎn)生新 的污染物。還培養(yǎng)了學生用發(fā)展的眼光來看世界。[思考]：如何降低城市化對地理環(huán)境產(chǎn)生的影響？[答]：發(fā)展生態(tài)城市，使人工環(huán)境和自然環(huán)境和諧統(tǒng)一起來。一方面在城市建設(shè)中，要發(fā)展低污染的節(jié)能建筑和綠色交通，減少城市各類活動對環(huán)境的污染；另一方面使城市景觀盡可能地與山、河、湖、海、植被等自然景觀保持協(xié)調(diào)，建立一種良性循環(huán)。
人教版新課標高中物理必修2曲線運動教案2篇
1、教師先演示投影：把小鋼珠放在黑墨水瓶蓋里轉(zhuǎn)一下（內(nèi)有一點點墨水），再放在半圓形有機玻璃軌道上運動并飛出，讓鋼珠在白紙上留下痕跡，同樣在3/5半圓周，4/5半圓周上運動飛出，讓學生猜測飛出方向由什么特點？（有機玻璃板說明：厚約5毫米，略小于小鋼珠直徑，圓弧半徑15厘米，MN邊稍長些，以便過MN做直線，根據(jù)半徑大小確定圓心O位置。）學生猜想：切線方向師：已知圓弧半徑為15厘米。如何驗證？請用幾何方法作圖驗證。生：標出飛出點和圓心，做圓心和飛出點的連線，用量角尺量出該連線和飛出軌跡直線的夾角，是否90度。2、再分組實驗，提醒同桌配合，小心鋼珠滾跑。實驗完畢，要求作圖驗證，并互相討論交流。3、交流和結(jié)論：師：要引導學生得出正確的科學結(jié)論：“圓周運動的物體的速度方向為該點的切線方向”，而不能直接得出“曲線運動的的物體速度方向為該點的切線方向”。
人教版新課標高中物理必修2追尋守恒量—能量教案2篇
一、學習任務分析1．教材的地位和作用在物理學中，能量并不是由功定義的。能量的概念是在人類追尋“運動中的守恒量是什么”的過程中發(fā)展起來的。能量概念之所以重要，就是因為它是一個守恒量。守恒關(guān)系是自然中十分重要的關(guān)系，從中學開始加強學生對守恒關(guān)系的認識是有益的，因為它是極為重要的研究方向。根據(jù)這種認識，所以本節(jié)從追尋守恒量出發(fā)引入能量概念，為能量學習奠定了基礎(chǔ)并把這種物理思想滲透在能量學習的全過程。2．學習的主要任務“追尋守恒量”一節(jié)，主要是使學生了解守恒思想的重要性。學生在學習本節(jié)課前已經(jīng)學習了能量的有關(guān)知識，在過去的教學中，是先學習能量的概念，而后研究一兩個具體問題，發(fā)現(xiàn)動能與勢能之和在某些過程中不變，由此引出機械能守恒定律。“機械能守恒”這個詞學生并不陌生，但是讓學生說出自己對它的認識又不是一件容易的事。
