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人教版高中英語必修3Canada-the true north說課稿4篇
Good afternoon, teachers, It’s my great pleasure to be here sharing my lesson with you.The content of my lesson is Senior English Book 3 Unit 5 Canada —— “The true North”.I’ll be ready to begin this lesson from five parts. Analysis of the teaching material,the teaching methods,the studying methods, the teaching procedure,and Blackboard design.First, let me talk about the teaching material.Part 1 Teaching Material:This unit is about the introduction of Canada. By studying of this unit,we’ll enable the students to learn the geography, population, main cities, and natural beauty, natural resources of Canada. Through the training of the unit, it also requires students to learn some Language skills such as the expressions of position and emotions.So it plays an important part in the English teaching in this book.After studying the teaching material and analyzing the rule of children’s growing of mind,I think the teaching aims are the followings:1.Knowledge objects:(1) make the students learn some new words and phrases(2) make the students understand the content of the lesson.2.Ability objects:(1)To develop the Ss’ abilities of listening, speaking, reading and writing. Especially reading and speaking ability.(2) learn to talk about the characters of Canada in English(3)To train the Ss’ ability of working in pairs.3.Emotion objects:(1)Enable students to understand the characters of Canada..(2)Stimulate Ss to work hard to make China stronger.Part 2 Teaching Methods:I think helping students learn to master new words and phrases and improve the students’ reading and speaking ability is import and the difficult.According to the analysis of the teaching material and the import points and the difficult points,I will use the following teaching methods : question-guiding approach; fast-reading and careful reading; multi-media teaching methods; discussion
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
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
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
在接下來的細讀環(huán)節(jié)，我套用了高考對閱讀理解的考查方式設置了5個問題，分別為三個推理判斷題，一個細節(jié)題和一個主旨大意題。學生需要對文章的內(nèi)容進行分析、歸納、推理、猜測等高級思維活動才能做出正確的回答。【設計意圖】這一過程是對學生進行細讀的訓練，培養(yǎng)學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的關鍵。首先，讓學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，讓學生仔細閱讀文章，找出可以表現(xiàn)人物態(tài)度變化的具體的語言和動作。最后，讓學生總結(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, 供學生思考?！驹O計意圖】通過一系列的活動培養(yǎng)學生學習從人物的語言和動作探究人物的心理，使學生進一步體會戲劇語言的魅力，從而對文章背后所反映的社會問題進行思考，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5Great scientists說課稿4篇
通過寫文章梗概，培養(yǎng)學生綜合運用語言的能力，學習用恰當?shù)挠⒄Z描述科學家的故事。這是本課的教學難點。教師可以使用完形填空的方式來幫助學生整理語篇，從而來降低難度。本課的教學重點的突破方法是：在閱讀前，讓學生初步了解得出科學觀點所需要的基本程序，從而輕松而自然地導入文章的閱讀；在閱讀過程中，由易到難設計快速閱讀和精讀的問題，層層推進各種閱讀活動，讓學生對閱讀內(nèi)容從整體感知到細節(jié)理解，最后深層讀懂整篇文章，同時加強閱讀策略的指導，讓每個學生都主動參與課堂教學活動，最終達到提高閱讀能力的目的。Step 4 Post-readingGroup Activities四人小組共同合作，在老師的適當指導下，就以下2個問題展開討論，讓學生就所知、所學、所感和所想融入話題，然后抽若干同學代表作小組發(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
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.
人教版高中地理必修2煤城焦作出路何在說課稿
分析過焦作市的地理概況和產(chǎn)業(yè)優(yōu)勢后，就需要針對由于資源枯竭所帶來的問題提出合理化的建議。既然是談經(jīng)濟轉(zhuǎn)型，就應該將話題的范圍明確在這一領域內(nèi)。通過材料3的相關內(nèi)容，我們了解到焦作市需要在產(chǎn)業(yè)結(jié)構(gòu)調(diào)整、培育新的優(yōu)勢產(chǎn)業(yè)、增強綜合競爭力等三個整改方針上下功夫。因而引導學生針對優(yōu)勢與不足提出建議，以三個整改方針為基準，衡量建議的可行性是鍛煉學生解決此類問題的有效途徑。在此我將教會學生的是解決問題方法而非案例的內(nèi)容，正所謂“授之以魚，不如授之以漁”。接下來針對學生的建議和教材資料分析所羅列的10點整改思路，由學生自由發(fā)言提出看法，通過教師的指導和學生的討論，進而確定經(jīng)濟轉(zhuǎn)型建議的具體方案。最后注意將建議與產(chǎn)業(yè)優(yōu)勢相對照，看建議是否都是圍繞著產(chǎn)業(yè)優(yōu)勢而提出的，這樣做會加深學生的印象，通過建議和優(yōu)勢的對應關系，將不難找出此類問題的解題思路。
人音版小學音樂一年級上三個和尚說課稿
3.請幾組同學表演這幾個的場面，其他同學做評委，從模仿表演中享受學習音樂的快樂。五.課堂小結(jié) （階段目標：以“我的收獲”（課件十）幫助學生總結(jié)所學內(nèi)容，知道音樂中，不同的音樂要素可以表現(xiàn)不同的人物、場面）課后反思：（課件十一）在本節(jié)音樂欣賞教學中，我堅持以“聽”為核心（因為音樂是一門聽覺藝術(shù)），讓學生“帶著問題聽”、“想著聽”、“動著聽”、“演著聽”等多元化的“聽”的形式。一系列“聽”的任務不僅提高學生的注意力，而且提高學生“聽”的興趣與“聽”的質(zhì)量。而且我創(chuàng)造和諧的課堂氣氛，積極引導學生把對音樂的內(nèi)心感受大膽地用語言表達出來，讓學生主動參與音樂快樂學習的實踐中去，創(chuàng)建出有利于學生發(fā)展的生動活潑的音樂課堂情景，讓學生的了解音樂，感受音樂，融入音樂。
人音版小學音樂一年級上新年好說課稿
一、說教材《新年好》 是一節(jié)以唱歌為主的音樂綜合課，這首歌是一首流行全世界、家喻戶曉、深受歡迎的英國兒童歌曲。3/4拍、F大調(diào)，曲調(diào)優(yōu)美、流暢，歌詞質(zhì)樸親切，能將人們帶入互相祝賀新年的歡樂情景中，進而表現(xiàn)人們載歌載舞互相祝賀、輕松而愉快的心情。二、說目標1、認知目標：運用親切、甜美而富有彈性的聲音演唱《新年好》，感受中外小朋友過新年的不同音樂情趣。2、技能目標：通過游戲，培養(yǎng)學生感受、聽辨已經(jīng)學過的打擊樂器的音色與節(jié)奏的能力，并能用動作感受三拍子的強弱規(guī)律。3、情感目標：在活動過程中體驗過新年、合作學習的愉快。學會熱愛今天的幸福生活，熱愛世界的音樂文化。豐富學生情感體驗，陶冶學生高尚的情操。 三、說重、難點重點是：能以體驗的方法、自主探究的方式，學唱歌曲《 新年好》，能主動參與小組創(chuàng)編活動，大膽地進行即興歌表演。創(chuàng)造性地表現(xiàn)歌曲。 難點是：聽辨節(jié)奏，用各種方式為三拍子的歌曲伴奏。
人音版小學音樂一年級下小寶寶睡著了說課稿
三、聆聽、表演《小寶寶睡著了》 1、聆聽歌曲啟發(fā)學生說說聽到歌曲時感受到了什么？2、復聽，跟著歌曲，輕柔地拍節(jié)拍。 3、聽琴聲逐句學唱歌曲。 4、指導學生用連貫、輕柔的聲音，唱準、唱好歌曲。 5、重點引導學生說說結(jié)尾的處理方式——對比練習，看哪一種方法更恰當 6、引導學生用自己創(chuàng)作的方式為歌曲伴奏、伴舞。 四、小結(jié)。 教學反思：一年級課堂上會有一些學生在上課的時候出現(xiàn)喊唱的現(xiàn)象，我在歌曲處理這一環(huán)節(jié)對歌曲的意境作了這樣的描述：靜靜的夜晚，天上的星星睡了、月亮睡了、地上的鳥兒、蟲兒也都進入了夢鄉(xiāng)，小寶寶也在悠蕩的搖籃里，聽著媽媽甜美的歌聲，漸漸入睡了。同學們媽媽哄寶寶睡覺唱歌的聲音應該是歡快的，還是輕柔的？經(jīng)過我的描繪和講解學生理解了在演唱搖籃曲時應該用輕柔的聲音，要把每一句都連貫的唱起來，不僅句與句之間要連貫，第一、第二段也要銜接緊湊，輕輕的哼唱出來，體會媽媽哄小寶寶睡覺時是多么的溫柔。
人音版小學音樂一年級下音樂的快慢說課稿
3、用木魚來演奏音樂的不同節(jié)奏。（1）師：小動物們都能聽著音樂按節(jié)奏走路了，下面我想考考你們能不能用這種樂器來演奏不同的節(jié)奏呢。（2） 出示木魚，演示木魚的演奏方法。師：左手拿木魚，右手拿木棍，敲的時候要注意不要打在自己的手指上，打在手指上是沒有聲音的。（3） 玩游戲《聽一聽》，訓練學生的聽辨能力和記憶能力。師：我們先來玩一個游戲，老師敲出幾個不同的節(jié)奏，你們聽聽哪個是最慢的，哪個是最快的，看誰的耳朵最靈敏。（4） 學生練習演奏木魚，學會用木魚敲出不同的節(jié)奏，教師個別指導。師：現(xiàn)在就請同學們自己來演奏木魚，你可以嘗試著怎樣敲會快一點，怎樣會慢一點。（木魚學生人手一個）[設計思路]在分層教學過程中，由于個別學生的基礎比較差，第一和第二段音樂的演奏訓練還不能完全掌握，所以花的時間比較長。導致接下的第三和第四段音樂的木魚節(jié)奏訓練沒有時間完成。我將在第二課時的復習鞏固課上再讓同學們來練習演奏。
人音版小學音樂三年級上冊原諒我說課稿
4）進行分組練唱、對唱、全體學生合唱。在分組練唱過程中，我將在學生中間進行單獨指導，詢問他們學習的難點并與學生一起解決，然后適當提問個別學生。通過小組唱、對唱等形式進行演唱評比，提高學生演唱熱情。這樣，不僅加深了學生對歌曲的熟悉程度，還為學生更好地理解歌曲做了鋪墊。5）表演唱，通過表演，不僅展示了學生個性、激發(fā)學生的創(chuàng)造力、表現(xiàn)力，而且再次加深了學生對歌曲情感的理解和體驗。（三）第三環(huán)節(jié)——拓展延伸通過對歌曲節(jié)拍節(jié)奏的改編，讓學生感受到得到好朋友原諒后又能快樂的游戲的情緒變化，感受到與好朋友在一起是一件幸?？鞓返氖?。本方案的設計，力求體現(xiàn)以人為本的思想，著眼于學生的主動發(fā)展，通過充分的音樂實踐，培養(yǎng)學生的能力，提高音樂素養(yǎng)；培養(yǎng)學生的合作意識、探究精神。從目標的提出、到過程的安排、學習方法的確定、乃至學習成果的呈現(xiàn)，都讓學生有更大的自主性、更多的實踐性。
人音版小學音樂五年級下冊鈴兒響叮當說課稿
結(jié)合我們學校的教學條件和我自身會彈琴的優(yōu)勢，我還設計了課堂彈奏活動，激勵學生練習好了參加圣誕聯(lián)歡晚會給大家表演節(jié)目。 我把第一段的樂譜進行了簡化節(jié)奏讓學生彈奏，在彈奏基本完成后還設計了學生邊唱邊彈，并且分組讓學生用電子琴自帶的的打擊樂器進行合奏練習，讓學生在學唱的同時更加深入的體會音樂歡快活潑的節(jié)奏特點，同時讓學生感受合奏的整體的音響效果，培養(yǎng)了學生的動手能力和集體合作能力。 六、總結(jié) 本課以歌曲《鈴兒響叮當》為主要內(nèi)容，聽、唱、彈等教學環(huán)節(jié)都圍繞他展開，各教學環(huán)節(jié)的設計易于統(tǒng)一，各項活動的設計均以音樂審美為核心，教學中關注段落的劃分，注重引導學生的參與，體驗，引導學生積極探索創(chuàng)造學習，展現(xiàn)音樂的節(jié)奏之美。
北師大初中數(shù)學七年級上冊絕對值的說課稿
（三）學以致用，鞏固新知為鞏固本節(jié)的教學重點我再次給出三道問題： 1)絕對值是7的數(shù)有幾個?各是什么?有沒有絕對值是-2的數(shù)?2)絕對值是0的數(shù)有幾個?各是什么? 3)絕對值小于3的整數(shù)一共有多少個?先讓學生通過小組討論得出結(jié)果，通過以上練習使學生在掌握知識的基礎上達到靈活運用，形成一定的能力。（四）總結(jié)歸納，知識升華小結(jié)時我也將充分發(fā)揮學生學習的主動性，發(fā)揮教師在教學的啟發(fā)引導作用，和學生一起合作把本節(jié)課所學的內(nèi)容做一個小結(jié)。（五）布置作業(yè)，拓展新知布置作業(yè)不是目的，目的是使學生能夠更好地掌握并運用本節(jié)課的內(nèi)容。所以我會布置這樣一個作業(yè)：請學生回家在父母的幫助下，找出南方和北方各三個城市的溫度，并比較這些溫度的大小，并寫出每個溫度的絕對值進行比較
人音版小學音樂六年級下冊火車來了說課稿
1、視覺圖象法：少數(shù)民族的風土人情對我們漢族的孩子來說不那么了解。為了使他們更直接地了解到新疆柯爾克孜族人們的生活習慣，我運用電腦軟件制作了一些柯爾克孜族的風情畫面，給學生視聽結(jié)合，避免枯燥的說教形式，使本來抽象的 內(nèi)容變得具體形象化。2、對比欣賞法：在了解這個民族的風土人情時，我運用畫面表格形式將新疆幾個民族的人物作對比，從而使學生更清楚的了解這個民族的風土人情、歌曲特點。在教學中我還運用了創(chuàng)設情景、興趣引入法、感性到理性等方法 。音樂家修海林認為“音樂審美必須要求體驗到音樂的意境”，在這一課，我充分運用了多媒體教學手段，盡量讓學生體驗到音樂的意境，從屏幕上看到新疆的風土人情關系，聽到新疆民歌不同的風格特點。
北師大初中數(shù)學七年級上冊有理數(shù)說課稿
1、 教材的地位和作用本課教材所處位置，是小學所學算術(shù)數(shù)之后數(shù)的范圍的第一次擴充，是算術(shù)數(shù)到有理數(shù)的銜接與過渡，并且是以后學習數(shù)軸、相反數(shù)、絕對值以及有理數(shù)運算的基礎.2、 教學目標①理解有理數(shù)產(chǎn)生的必然性、合理性及有理數(shù)的分類；②能辨別正、負數(shù)，感受規(guī)定正、負的相對性；③體驗中國古代在數(shù)的發(fā)展方面的貢獻.3、 教學重點和難點教學重點：理解正數(shù)和負數(shù)的概念和有理數(shù)概念.教學難點：對負數(shù)概念的理解和有理數(shù)的分類.二、 教學分析鑒于初一年級學生的年齡特點，他們對概念的理解能力不強，精神不能長時間集中，但思維比較活躍。我決定采取啟發(fā)式教學法及情感教學，創(chuàng)設問題情境，引導學生主動思考，用大量的實例和生動的語言激發(fā)學生學習興趣，調(diào)節(jié)學習情緒。
感恩節(jié)國旗下講話稿：對“擁有”說聲“謝謝”
一滴水，要感謝大海，讓它匯聚成了無盡的水流；一朵花，要感謝雨露，滋潤它在陽光下茁壯成長；一只鷹，要感謝天空，賜予它肆意翱翔的空間；一個人，要學會感恩，才能托起世界的脊梁！繼愛因斯坦之后世界上最偉大的物理學家，被世人譽為“宇宙之王”的霍金，21歲的他不幸被診斷患有肌肉萎縮性側(cè)索硬化癥。當時，醫(yī)生曾診斷身患絕癥的他只能活兩年，可他一直堅強的活了下來。他被禁錮在輪椅上，只有三根手指和兩只眼睛可以活動，疾病已經(jīng)使他的身體嚴重變形，頭只能朝右邊傾斜，肩膀左低右高，雙手緊緊并在當中，握著手掌大小的擬聲器鍵盤，兩腳則朝內(nèi)扭曲著，嘴已經(jīng)幾乎歪成S型。有一天，偉大的科學家霍金登上講臺，完成一場學術(shù)報告。就在學術(shù)報告快結(jié)束時，一位年輕的女記者冒然問道：“霍金先生，你將永遠固定在輪椅上，你不認為命運讓你失去了太多嗎?”
小學數(shù)學人教版六年級下冊《第一課比例尺（1）》教案說課稿
（一）觀圖激趣、設疑導入 出示課件的第一張幻燈片。1、談話導入(PPT課件出示腦筋急轉(zhuǎn)彎)。師:同學們,老師這里有一個腦筋急轉(zhuǎn)彎，一起來猜一猜把！生1:因為螞蟻是在地圖上爬過去的。2、揭示課題。師:同學們可真聰明!是的,地圖上的距離是按一定的比把實際的距離縮小了畫在圖紙上的。今天我們就來研究這個問題:比例尺。(板書課題)【設計意圖】運用學生熟悉的現(xiàn)象導入,給學生帶來的是愉快的心情和積極的學習態(tài)度,順其自然進入學習狀態(tài),達到導入的目的。（二）探究新知教學比例尺的意義及種類,理解比例尺的含義以及關系式。1、閱讀教材第53頁關于比例尺的內(nèi)容。師:閱讀教材后,匯報你知道了哪些關于比例尺的知識。生1:通過閱讀我知道:一幅圖的圖上距離和實際距離的比,叫做這幅圖的比例尺。圖上距離∶實際距離=比例尺。(板書比例尺的意義)=比例尺生2:比例尺是繪圖時用的,它是把實際距離按一定的比縮小或擴大,再畫在圖紙上。生3:教材介紹說,地圖上的比例尺有1∶100000000,這是數(shù)值比例尺,它也可以寫成這種形式,也叫數(shù)值比例尺。(板書)生4:老師,我看見這樣表示比例尺的: 師:這叫線段比例尺。 它表示的是:圖上1厘米的距離相當于地面上50 km的實際距離。(板書)生5:我會把上面的線段比例尺改成數(shù)值比例尺。圖上距離∶實際距離。=1 cm∶50 km=1 cm∶5000000 cm(單位要相同)=1∶5000000(板書過程)生6:比例尺1∶5000000表示圖上距離是實際距離的。實際距離是圖上距離的5000000倍。