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人教版新課標高中物理必修2功率教案2篇
1．用CAI課件模擬汽車的啟動過程。師生共同討論：①如果作用在物體上的力為恒力，且物體以勻速運動，則力對物體做功的功率保持不變。此情況下，任意一段時間內(nèi)的平均功率與任一瞬時的瞬時功率都是相同的。②很多動力機器通常有一個額定功率，且通常使其在額定功率狀態(tài)工作（如汽車），根據(jù)P=FV可知：當路面阻力較小時，牽引力也小，速度大，即汽車可以跑得快些；當路面阻力較大，或爬坡時，需要比較大的牽引力，速度必須小。這就是爬坡時汽車換低速擋的道理。③如果動力機器在實際功率小于額定功率的條件下工作，例如汽車剛剛起動后的一段時間內(nèi)，速度逐漸增大過程中，牽引力仍可增大，即F和v可以同時增大，但是這一情況應(yīng)以二者乘積等于額定功率為限度，即當實際功率大于額定功率以后，這種情況不可能實現(xiàn)。
人教版新課標高中物理必修2向心力教案2篇
3．進一步體會力是產(chǎn)生加速度的原因，并通過牛頓第二定律來理解勻速圓周運動、變速圓周運動及一般曲線運動的各自特點。（三）、情感、態(tài)度與價值觀1．在實驗中，培養(yǎng)學生動手、探究的習慣。2．體會實驗的意義，感受成功的快樂，激發(fā)學生探究問題的熱情、樂于學習的品質(zhì)。教學重點1．體會牛頓第二定律在向心力上的應(yīng)用。2．明確向心力的意義、作用、公式及其變形，并經(jīng)行計算。教學難點1．對向心力的理解及來源的尋找。2．運用向心力、向心加速度的知識解決圓周運動問題。教學過程（一）、 引入新課：復(fù)習提問：勻速圓周運動的物體的加速度——向心加速度，它的方向和大小有何特點呢？學生回答后進一步引導(dǎo)：那做勻速圓周運動物體的受力有什么特點呢？是什么力使物體做圓周運動而不沿直線飛出？請同學們先閱讀教材
高中數(shù)學人教版必修二直線的點斜式方程教案
【教學目標】知識目標：理解直線的點斜式方程、斜截式方程、橫截距、縱截距的概念；掌握直線的點斜式方程、斜截式方程的確定．能力目標：通過求解直線的點斜式方程和斜截式方程，培養(yǎng)學生的數(shù)學思維能力與數(shù)形結(jié)合的數(shù)學思想．情感目標：通過學習直線的點斜式方程和斜截式方程，體會數(shù)形結(jié)合的直觀感受．【教學重點】直線的點斜式方程、斜截式方程的確定．【教學難點】直線的點斜式方程、斜截式方程的確定．
人教版高中地理必修1水資源的合理利教案
知識和技能 1、了解水資源的概念和衡量水資源的具體指標。2、運用圖表說明全球和我國水資源的時空分布不 均的特點。3、說明在不同生產(chǎn)力條件下，水資源的數(shù)量和質(zhì)量對人類生存和發(fā)展的意義。4、樹立水資源可持續(xù)利用的觀念，了解解決水資源供需矛盾的策略。過程與方法 1、自組學習。2、案例分析法3、合作探究教學法。情感、態(tài)度與價值觀1、辯證的看待人類對水資源的利用情況。2、樹立資源利用的可持續(xù)發(fā)展觀點。教學重點1、水資源對人類生存和發(fā)展的意義。2、合理利用水資源。教學難點說明在不同的生產(chǎn)力條件下，自然資源的數(shù)量、質(zhì)量對人類生存與發(fā)展的意義。教具、資料多媒體課件課時安排1課時教學過程：一、水資源及其分布 1．概念：廣義——水圈內(nèi)的水量總體狹義——陸地上的淡水資源（即通常所指）
人教版高中政治必修1經(jīng)營公司教案
最后，公司要城信經(jīng)營，樹立良好的信譽與企業(yè)形象。教師活動：引導(dǎo)學生閱讀教材P44“金華火腿”的事例；多媒體播放電視系列片3：“小天鵝”重視產(chǎn)品質(zhì)量的例子，國家對洗衣機的質(zhì)量標準是4000次運行無故障，而國際標準是5000次，為此，廠里組織近百名科技人員，花了兩年時間進行全廠性技術(shù)攻關(guān)，終于實現(xiàn)了無故障運行5000次?！靶√禊Z”以它的信譽和質(zhì)量給企業(yè)帶來了巨大效益，1000多人的廠子，年銷售收入10.03億元，實現(xiàn)利潤1.72億元，公司躋身于全國500家大型企業(yè)的行列，企業(yè)綜合經(jīng)濟效益居全國18位。設(shè)問：兩個企業(yè)不同命運的原因何在？學生活動：思考討論，發(fā)表見解。教師點評：企業(yè)的信譽和形象對企業(yè)的生存競爭至關(guān)重要，是企業(yè)的無形資產(chǎn)，是公司經(jīng)營成敗的重要因素。企業(yè)的信譽和形象集中體現(xiàn)在產(chǎn)品和服務(wù)的質(zhì)量上。創(chuàng)立名牌產(chǎn)品，實行優(yōu)質(zhì)服務(wù)，是企業(yè)信譽和形象的表現(xiàn)，也是企業(yè)開展正當競爭的主要手段。
人教版高中政治必修1消費及其類型教案
貸款消費不僅滿足了消費者的生活需要，提高了消費者的生活質(zhì)量，而且促進了經(jīng)濟的發(fā)展，特別是我國經(jīng)濟發(fā)展進入買方市場后，貸款消費對擴大內(nèi)需，拉動經(jīng)濟的增長起來重要的作用。所以，我們要轉(zhuǎn)變傳統(tǒng)的消費觀念，以積極的態(tài)度來對待貸款消費，通過貸款消費滿足來滿足當前的需要，通過生活質(zhì)量。當然，在貸款消費是也要考慮自己的償還能力，還要講究信用，按時還貸。（3）按消費的目的不同，可分為生存資料消費、發(fā)展資料消費和享受資料消費。其中生存資料消費是最基本的消費。隨著經(jīng)濟水平的提高，發(fā)展資料和享受資料消費將逐漸增加。3、消費結(jié)構(gòu) 教師活動：引導(dǎo)學生看書，指出（1）消費結(jié)構(gòu)的含義：就是指人們各類消費支出在消費總支出中所占的比重。教師活動：引導(dǎo)學生分析個人及家庭消費狀況的變化，說明對消費結(jié)構(gòu)的理解，并總結(jié)消費結(jié)構(gòu)的變化特點。學生活動：積極討論，踴躍發(fā)言
人教版高中政治必修1新時代的勞動者教案
總之，依法維護勞動者合法權(quán)益，是保障勞動者主人翁地位的前提，是充分調(diào)動勞動者積極性、創(chuàng)造性，使之成為改革開放和社會主義建設(shè)主力軍的保證。也是促進勞動力資源合理配置，促進經(jīng)濟持續(xù)、快速、健康發(fā)展的需要。（三）課堂總結(jié)、點評★課余作業(yè)某企業(yè)由于生產(chǎn)任務(wù)較大，在未經(jīng)勞動行政部門批準的情況下，廠長強行讓部分職工延長勞動時間，每天加時工作，星期天也照常上班，不讓休息。到月底，部分職工全月累計加班加點高達120小時，也不發(fā)加班工資。根據(jù)上述材料回答：你認為該廠的做法是否合法？為什么？勞動者依法享有哪些權(quán)利？該廠的做法侵害了勞動者的哪些權(quán)利？這些工人應(yīng)當怎么辦？★教學體會本節(jié)學習勞動者的權(quán)利和樹立什么樣的就業(yè)觀等問題，與大家的生活聯(lián)系比較密切。因此，在講解過程中要通過大量的實例和對比，引導(dǎo)學生思考和討論，將市場經(jīng)濟中的一些理論知識潛移默化的給學生。
人教版高中政治必修1市場配置資源教案
教師點撥：這則材料說明，市場調(diào)節(jié)有其局限性，單純的市場調(diào)節(jié)具有自發(fā)性、盲目性、滯后性等缺點。市場調(diào)節(jié)不是萬能的。社會生活中有很多領(lǐng)域和產(chǎn)品不能用市場來調(diào)節(jié)，如國防、治安、消防等產(chǎn)品的供給問題，槍支彈藥、麻醉品等都不能讓市場來調(diào)節(jié)。市場調(diào)節(jié)具有自發(fā)性、盲目性、滯后性。自發(fā)性：由于市場調(diào)節(jié)是在價值規(guī)律自發(fā)作用下進行的，在利益驅(qū)動下會產(chǎn)生一些違反市場原則的行為，如制造、銷售假冒偽劣商品，大量排放廢水、廢氣破壞環(huán)境，竊取他人智力成果等等。盲目性：由于人們不可能完全掌握生產(chǎn)各方面信息及其變化趨勢，致使決策帶有一定的盲目性。如某種商品有利可圖則一哄而上，反之則一哄而退，從而造成資源浪費和消費得不到充分滿足。滯后性：由于市場價格的形成和傳遞有一個過程，一旦傳遞到生產(chǎn)經(jīng)營者手中進行生產(chǎn)調(diào)整，就有一個時間差，致使市場調(diào)節(jié)帶有滯后性，成為一種事后調(diào)節(jié)。
人教版高中政治必修4世界的物質(zhì)性精品教案
1．知識目標：◇識記 ：(1)自然界的物質(zhì)性(2)物質(zhì)的含義(3)人類社會的物質(zhì)性◇理解：(1)世界的物質(zhì)性(2)自然界是物質(zhì)的，不是上帝和神創(chuàng)造的(3) 物質(zhì)和具體的物質(zhì)形態(tài)的區(qū)別和聯(lián)系(4)勞動創(chuàng)造了人和人類社會(5)人類社會是物質(zhì)世界長期發(fā)展的產(chǎn)物◇分析：(1)聯(lián)系當前自然界中萬事萬物的發(fā)展變化，說明自然界的物質(zhì)性 (2)聯(lián)系我國當前的社會改革以及社會發(fā)展的狀況，說明人類社會的物質(zhì)性(3)用課本知識分析，世界是物質(zhì)的世界，世界的真正統(tǒng)一性在于它的物質(zhì)性2．能力目標：(1)通過學習，體會如何去理解一個哲學觀點，初步了解學習哲學的基本方法(2)通過學習、體會、分析與綜合的思維方法，提高分析問題的能力(3)通過收集和分析材料，培養(yǎng)收集材料和整理材料的能力3．情感、態(tài)度和價值觀目標：通過對本課的學習，能從世界本質(zhì)問題上指出有神論的荒謬性，從根本上消除有神論的影響，初步樹立唯物主義的自然界、世界觀 三、教學重點難點重點：世界的物質(zhì)統(tǒng)一性原理
新人教版高中英語必修1Unit 2 Travelling Around-Discovering Useful Structure教案
（5）be to do （可以和具體的時間狀語連用）①表示按計劃、安排即將發(fā)生的動作。②用于時間、條件狀語從句中，表示“如果要……，想要……”。The students are to meet at the school gate tomorrow. 明天學生們將在學校大門口集會。 If you are to succeed, you must work as hard as possible. 如果你想要成功，比必須努力工作。（6）be about to do （不與具體的時間狀語連用） 表示即將要發(fā)生的動作。We are about to start. 我們就要出發(fā)了。The new school year is about to begin. 新學年開學在即。（7）一般現(xiàn)在時表將來①表示按時間表規(guī)定將要發(fā)生的動作。常限于表示位置移動的短暫性動詞。②在時間、條件或讓步狀語從句中，用一般現(xiàn)在時表將來。Look at the timetable. Hurry up! Flight 4026 takes off at 18:20. 你看看時刻表，快點！4026次航班的起飛時間是下午6點20分。Jane is in a hurry because the train to the airport leaves in half an hour. 簡很匆忙，因為去機場的火車半小時后出發(fā)。
新人教版高中英語必修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.旅游計劃是一種常見的應(yīng)用文寫作。旅游可分為觀光游、文化游、美食游及探險游等不同類型，因此旅游計劃也要根據(jù)不同的旅游目的進行設(shè)計。常規(guī)的旅游計劃需要明確以下幾個方面的問題: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? 為了提升旅行計劃的層級，還需注意以下幾個方面的問題:1.每段是否有明確清晰的主題;2.用一般現(xiàn)在時代替一般將來時；3.用更高級的形容詞詞匯。例如:表達“好”時，不要總用“nice”,我們還可以用“smart, clean, excellent, exciting, beautiful, wonderful, clever, famous, grand”等表達更具有指向性的詞匯；4.用更高級的動詞詞匯。比如:我們可以用“seem stand, lie .get stay, remain, look . sound, become . keep, grow”等代替"be";
新人教版高中英語必修1Unit 4 Natural Disasters-Discovering Useful Structures教案
【教材分析】This teaching period mainly deals with the grammar: the restrictive relative clauses.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 exercise of good quality.【教學目標與核心素養(yǎng)】1. Get students to have a good understanding of the basic usages of the restrictive relative clauses.2. Enable students to use the restrictive relative clauses flexibly.3. Develop students’ speaking and cooperating abilities.4. Strengthen students’ great interest in grammar learning.【教學重難點】How to enable students to have a good understanding of the restrictive relative clauses, especially the uses of the relative words such as which, that, who, whom.【教學過程】Step1: 語法知識呈現(xiàn)定語從句（一）—關(guān)系代詞的用法在復(fù)合句中, 修飾名詞或代詞的從句叫定語從句。定語從句通常由關(guān)系代詞或關(guān)系副詞引導(dǎo)，說明事物的具體信息，從句位于被修飾詞之后。被定語從句修飾的詞叫先行詞，引導(dǎo)定語從句的詞叫關(guān)系詞，關(guān)系詞指代先行詞，并在定語從句中充當成分。關(guān)系詞有兩種：關(guān)系代詞who, whom ,whose, that, which, as和關(guān)系副詞when, where, why。
新人教版高中英語必修1Unit 5 Languages Around the World-Reading and Thinking教案
【教材分析】本節(jié)課是高中英語第一冊的最后一個單元的閱讀和思考部分，文章難度明顯增加，體現(xiàn)在以下幾個方面：文章題材是說明文，比較難理解；話題生疏，涉及到歷史等知識；生詞量增大，而且在語境中理解詞匯的要求提高。面對這些，教師的難度和高度也要有所提升，通過探討說明順序，了解背景知識等幫助他們找到說明文閱讀的方法?！窘虒W目標與核心素養(yǎng)】1. 文化意識目標新課程中指出，文化意識是對中外文化的理解和對優(yōu)秀文化的認同。文化意識的的培養(yǎng)有助于學生增加國家認同和家國情懷，成為有文明素養(yǎng)和社會責任感的人。我們這個單元很好體現(xiàn)了這一點，通過了解漢字書寫的體系和發(fā)展，學生可以有一種文化自豪感，同時也能夠幫助學生深入挖掘這篇文章，從而想到更多和中國文化相關(guān)的方面。2. 學習能力目標
新人教版高中英語必修2Unit 1 Cultural Heritage-Discovering Useful Structure教案一
This teaching period mainly deals with grammar “restrictive relative clauses.” To begin with, teachers should lead students to revise what they have learned about the relative pronouns and relative adverbs. And then, teachers move on to stress more special cases concerning this grammar, such as the “preposition+ relative pronouns which and whom” and cases where we can omit the relative pronouns. 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 relative pronouns and adverbs of attributive clauses.2. Lead students to learn to use some special cases concerning restrictive relative clauses 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 relative pronouns and adverbs of attributive clauses in a sentence2. Instruct students to write essays using the proper relative pronouns and adverbs of attributive clauses.本節(jié)語法思考：定語從句在復(fù)合句中的作用是什么？ 關(guān)系詞有哪些？定語從句在復(fù)合句中的作用相當于形容詞，它在句中作定語修飾名詞或代詞。他們在先行詞和定語從句之間起到聯(lián)系作用，同時在意義上代表先行詞并在定語從句中擔任一個成分。被定語從句所修飾的詞稱先行詞，定語從句一般放在先行詞的后面。
新人教版高中英語必修2Unit 1 Cultural Heritage-Reading and Thinking教案一
The theme of the reading and thinking is about “Understanding how a problem was solved”.The Listening & Speaking & Talking is about international co-work to protect the Mount Tai, in which the students from seven countries came up with many solutions even create the Mount Tai App. This section aims at showing how to solve a difficult and even tough problem about protecting the cultural heritage by the international co-work. So in this section, cultivating students’ international awareness is very clear and important. Concretely, with the economic development, how to balance the protection of cultural relics and social development is a big challenge for human. In the 1950s, the Egyptian government wanted to build the Aswan Dam across the Nile to control floods, produce electricity and water farms. But the proposal led to protests because it would destroy a lot of cultural relics. The Egyptian had no choice but ask the UN for help. Therefore, a international cooperation about how to protect the cultural relics began, which involved the time length about 20 years and a large amount of fund. Then, the problems was solved. 1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline3. Learn how to solve a tough problem by asking for help and cooperation4. Have the international awareness and understand the great strength of international cooperation.1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline.3. Learn how to solve a tough problem by asking for help and cooperation.
新人教版高中英語必修2Unit 2 Wildlife Protection-Listening and Speaking教案
This lesson is about wildlife protection. The listening and speaking is about “How to protect endangered wildlife ?” Faced with the facts and numbers of wildlife loss, people begin to detect the reasons, then people such as the celebrities (Prince William and Yao Ming) are calling on to protect them. So students are guided to enhance the awareness of protecting wildlife and try to take part in some volunteer activities of protecting wildlife.1. Predict the content by using visuals. 2. Learn to use the sentences such as “I’m concerned about.... But now they are in danger. I want to know the reasons/why./ What can we do to protect them ?3. Learn from the stars like Prince William and Yao Ming and enhance the awareness of protecting wildlife.4. Guide students to try to put forward the solutions to the problems of wildlife protection and then discuss them with partners and present the results of discussion.5. Master the pronunciation of stressed syllables.1. Learn from the stars like Prince William and Yao Ming and enhance the awareness of protecting wildlife.2. Guide students to try to put forward the solutions to the problems of wildlife protection and then discuss them with partners and present the results of discussion.3. Learn to use the sentences such as “I’m concerned about.... But now they are in danger. I want to know the reasons/why./ What can we do to protect them ?4. Master the pronunciation of stressed syllables.Part A Listening and Speaking--- How to save endangered wildlifeStep 1 Lead in1. Point at the pictures on P14 and ask Q1: What message do these posters share?
新人教版高中英語必修2Unit 4 History and Traditions-Reading and Thinking教案一
Features of languages1．Finally, in the 20th century, the southern part of Ireland broke away from the UK, which resulted in the full name we have today: the United Kingdom of Great Britain and Northern Ireland．該句是一個復(fù)合句。該句主句為：the southern part of Ireland broke away from the UK；which resulted in the full name we have today為which引導(dǎo)的定語從句代指前面整句話的內(nèi)容，we have today為定語從句修飾先行詞name。譯文：最后，在20世紀，愛爾蘭南部脫離英國，這導(dǎo)致了我們今天有的英國的全名：大不列顛及北愛爾蘭聯(lián)合王國。2．Almost everywhere you go in the UK, you will be surrounded by evidence of four different groups of people who took over at different times throughout history．該句是一個復(fù)合句。該句主句為：you will be surrounded by evidence of four different groups of people；其中Almost everywhere you go in the UK為讓步狀語從句； who took over at different times throughout history為定語從句修飾先行詞people。譯文：幾乎無論你走到英國的任何地方，你都會發(fā)現(xiàn)歷史上有四種不同的人在不同的時期統(tǒng)治過英國。3．The capital city London is a great place to start, as it is an ancient port city that has a history dating all the way back to Roman times．該句是一個復(fù)合句。該句主句為：The capital city London is a great place to start; as it is an ancient port city that has a history dating all the way back to Roman times．為原因狀語從句；dating all the way back to Roman times為現(xiàn)在分詞短語作定語修飾history。
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 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(yīng)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!
人教版高中地理必修1河流地貌的發(fā)育教案
【引入新課】同學們在河邊玩耍的時候不知注意到如圖中所展示的場面沒有？（注意到了）那么同學們知道圖中A、B、C它們的名稱分別是什么嗎？（不知道）它們的名稱簡單的講可以統(tǒng)稱為河流地貌。至于它們的具體名稱和形成原理就是我們今天要討論的問題。一、河流地貌【介紹】河流地貌是自然界中最常見的地貌之一。按照成因，可以將河流地貌分為侵蝕地貌和堆積地貌，它們的形成和發(fā)展主要與外力作用有關(guān)。【板書】1、分類： 侵蝕地貌和堆積地貌【過渡】我們首先來看一下河流侵蝕地貌【板書】2、河流侵蝕地貌【介紹】河流在流動過程 中，會破壞并掀起地表的物質(zhì)，形成侵 蝕地貌。河流侵蝕地貌是由溯源侵蝕、下蝕和側(cè)蝕共同作用形成的?！疽龑?dǎo)讀書】請同學們快速閱讀教材P83倒數(shù) 第二段，添出以下表格。
