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人教A版高中數(shù)學(xué)必修一函數(shù)的表示法教學(xué)設(shè)計(1)

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Listening &Speaking&Talking教學(xué)設(shè)計

    新人教版高中英語必修3Unit 3 Diverse Cultures-Listening &Speaking&Talking教學(xué)設(shè)計

    1. In Picture 1 and Picture 2, where do you think they are from? How do you know?From their wearings, we can know they are from ethnic minority of China--- Miao and Dong.Picture 1, they are playing their traditional instrument lusheng in their traditional costumes.Picture 2. the girls are Miao because they wear their traditional costumes and silver accessory.2. In Picture 3, can you find which village it is? What time is it in the picture?It is Dong village. It is at night. Step 2 While-listeningJustin met a new friend while traveling in Guizhou. Listen to their conversation and complete the summaries below.Part 1Justin and Wu Yue watched some Miao people play the lusheng. The instrument has a history of over 3,000 years and it is even mentioned in the oldest collection of Chinese poetry. Then they watched the lusheng dance. Justin wanted to buy some hand-made silver/traditional accessories as souvenirs. He was told that the price will depend on the percentage of silver. Part 2They will go to a pretty Dong minority village called Zhaoxing. they will see the drum towers and the wind and rain bridges. They may also see a performance of the Grand Song of the Dong people.Step 3 Post-listening---TalkingWork in groups. Imagine Justin is telling some friends about his trip to Guizhou. One of you is Justin and the rest of you are his friends. Ask Justin questions about his trip and experience. The following expressions may help you.

  • 新人教版高中英語必修3Unit 4 Space Exploration-Discovering Useful Structure教學(xué)設(shè)計

    新人教版高中英語必修3Unit 4 Space Exploration-Discovering Useful Structure教學(xué)設(shè)計

    The theme of the section is “Describe space facts and efforts to explore space”. Infinitives are one of non-finite verbs, as the subjects, objects, predicative, attributes and adverbials. This unit is about space exploration, which is a significant scientific activity, so every scientific activity has strong planning. Therefore, using the infinitives to show its purpose, explanations or restrictions is the best choice.1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use infinitives in oral and writing English. 1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use use infinitives in oral and writing English.Step 1 Lead in---Pair workLook at the following sentences and focus on the italicized infinitives. In pairs, discuss their functions. 1. I trained for a long time to fly airplanes as a fighter pilot..(作目的狀語)2. As we all know, an astronaut needs to be healthy and calm in order to work in space..(作目的狀語)3. First of all, you must be intelligent enough to get a related college degree..(作目的狀語)4. Some scientist were determined to help humans realise their dream to explore space..(作定語)5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space..(作定語)Summary:1. 不定式的結(jié)構(gòu):to+do原形。2. 分析上面的句子,我們知道在描述太空探索時,動詞不定式不僅可以用來表目的,還可以用來作定語,表修飾。

  • 新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學(xué)設(shè)計二

    新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學(xué)設(shè)計二

    The theme of this unit focuses on “space exploration.” Students will learn about the training and experience needed to become an astronaut. The text is mainly about the development of space exploration. On the one hand, the text helps students to have a good understanding about the great feats humans have achieved, on the other hand, they will further understand the contributions that we Chinese have achieved, and feel confident and proud about our homeland and strengthen their love for our country. The teacher should instruct students to aim high and study harder to make great progress in the space career if possible.1. Read about the development and value of space exploration.2. Explore the mysteries of the universe and the achievements in space exploration.3. Skillfully use the vocabulary of this text to cultivate self-study ability 4. Develop cooperative learning ability through discussion.1. Enable the Ss to talk about the development and value of space exploration.2. Guide the Ss to summarize the main idea of each paragraph as well as the main idea of the text.3. Help Ss comprehend the main reasons for space exploration. Multi-media, textbook, notebooks.Step 1: Warming up and predictionLook at the title and the pictures of the text and predict what the text will be about?2. What are the main reasons for space exploration?

  • 新人教版高中英語必修3Unit 4 Space Exploration-Reading for Writing教學(xué)設(shè)計二

    新人教版高中英語必修3Unit 4 Space Exploration-Reading for Writing教學(xué)設(shè)計二

    ⑦在我看來, 探索太空是值得的。As far as I am concerned, it is worthwhile to explore the space.Step 10 Writing---draftRecently, students in our class have had heated a discussion on whether space is worth exploring. Students hold different ideas about it.30% of us think space exploration is not worthwhile. They think space is too far away from us and our daily life and is a waste of money. And the money spent on space exploration can be used to solve the earth’s problems such as starvation and pollution.On the other hand,70% think space is worth exploring because we have benefited a lot from it,such as using satellites for communication and weather forecast. What’s more,with further space research,we may solve the population problem by moving to other planets one day. Also,space research will enable us to find new sources to solve the problem of energy shortages on the earth.As far as I am concerned, it is worthwhile to explore the space. Not only can it promote the development of society but also enrich our life. Step 11 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1.Does the writer explain why he/she changed/wanted to change?2.Does the writer tell how the changes have improved or will improve his/her life?3.Is the text well-organised?4.Does the writer use words and expressions to show similarities and differences?5.Are there any grammar or spelling errors?6.Does the writer use correct punctuation?

  • 新人教版高中英語必修3Unit 5 The Value of Money- Discovering Useful Structure教學(xué)設(shè)計

    新人教版高中英語必修3Unit 5 The Value of Money- Discovering Useful Structure教學(xué)設(shè)計

    Step 3 Meaning1. 過去將來時表示從過去某一時間來看將要發(fā)生的動作或存在的狀態(tài), 常用在賓語從句中。一般由“would/should +動詞原形”構(gòu)成。She hoped that they would meet again someday. 她希望將來有一天他們能再見面。2. was/were going to+動詞原形: 表示過去將要發(fā)生或很有可能發(fā)生的動作, 常用于口語中, 表示預(yù)言、意圖或者打算等。He was going to start work the following week. 他打算下星期開始工作。3. was/were about to do: 常用來表示即將發(fā)生的動作, “剛要/正要做……”。注意該結(jié)構(gòu)不與任何時間狀語連用。I felt that something terrible was about to happen. 我感到某種可怕的事情即將發(fā)生。4.was/were to do: 表示“曾計劃做某事”, 如果表示“本來計劃做某事, 動作沒實現(xiàn)”, 則需用 “was/were to have done”。She said she was to have told me about the accident. 她說她本來想告訴我關(guān)于事故的事。5.Start, go, come, leave, see, meet等動詞的過去進行時: 表示就過去某一時刻而言即將發(fā)生的動作。She was coming later. 她隨后就來。I had just put on my overcoat and was leaving to visit a friend of mine. 我剛穿上外套要去看我的一個朋友。

  • 新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking&Talking教學(xué)設(shè)計

    新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking&Talking教學(xué)設(shè)計

    4. A:We’d like to have someone to say a word at the beginning to welcome the group.B:↙Who?A:We thought that you or Dr.Johnson might do it.B用降調(diào)說Who,其意思是問,對方想讓誰在開場時致歡迎詞。Step 6 Pronunciation---Practice1. Listen to the short conversation and mark the intonation with ↗, ↙ or ↙, ↗. Then discuss with a partner what they intend to convey by using different intonation.Owner: You know what ?↗ It’s a million-pound bank note↙.Waiter 1: Really ?↗(question)Waiter 2: Really !↙(unbelievable and surprised)Waiter 3: Really ?!↙↗(first question then surprised)2. Listen to the conversations. Underline the parts that are stressed and mark the intonation. Then talk about the implied meanings of the responses with different intonations. Listen again and repeat.1) Henry: It’s a nice suit.Owner: Oh, it’s perfect!↙(The intonation means it is very suitable for Henry.)2) Henry: Well, that’s very kind of you.Owner: Kind, sir ?↗(what you said is not right) No, it’s kind of you. You must come whenever you want and have whatever you like. Just having you sit here is a great honour !!↙(welcome you to come again)3)Henry:Well, to be honest, I have none. Oliver:(happily) What luck!(excited) Brother↗, what luck!↙(It means “Didn’t you hear it?”)Henry: Well, it may seem lucky to you but not to me!↗(angry) If this is your idea of some kind of joke, I don’t think it’s very funny. Now if you’ll excuse me, I ought to be on my way.↙(If so, I would leave.)Roderick: Please don’t go↙...(hope Henry can wait for a moment)Part B Viewing and Talking---Describe people’s changing attitudes in a film clipStep 1 Before-listening---Tell the filmYou are going to watch part of the film The Million Pound Bank Note. Look at these photos and guess what happens in the film.

  • 新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking教學(xué)設(shè)計

    新人教版高中英語必修3Unit 5 The Value of Money-Listening &Speaking教學(xué)設(shè)計

    Step 4: Listen again and decide if the following statements are true (T) or false (F).1 It was the first time Chen Liyan's story was reported. T口 F口2 Chen found 10,000 yuan in a small plastic bag in Taiyuan railway station口 F口3 Wang Zheng apologized to Chen because he couldn't offer her more money. T口 F口4 Chen took out a large loan to cure her daughter, T口 F口5 Wang set up a fundraising website for Chen's daughter after Chen told him about her situation. T口 F口Step 5:After listening, discuss the questions.1 What kind of person do you think Chen Liyan is?Chen Liyan is generous and honest because she returned a large sum of money to the owner.2 Did Chen return the money because she didn't need it?No. She returned the money because it was the right thing to do. Evidence for this is that she refused to accept the reward money because she felt that it had not been earned. 3 Is it common for people to do what Chen did?It depends on the culture. In some countries it is quite common to return money that has been found. In other countries, people believe "Finders are keepers!" 4 How did Wang Zheng feel about the return of his money?He must have been very happy and relieved to have gotten his money back. We know this because he thanked Chen repeatedly and even offered her a reward.5 Why did Ma Dongbao tell Wang about Chen's family?He must have had great sympathy for Chen and her daughter and wanted to help them.'We know this because he arranged help for them. 6 How did the news reporter feel about Chen's actions?The news reporter felt that it showed that money wasn't the most important thing in life. We know this because the reporter told us that this is what Chen believes. and then said, “that's a great attitude to take."

  • 新人教版高中英語必修3Unit 5 The value of money-Reading and Thinking教學(xué)設(shè)計二

    新人教版高中英語必修3Unit 5 The value of money-Reading and Thinking教學(xué)設(shè)計二

    ? Could you offer me some kind of work here?? I don’t want your charity, I just want an honest job.? Careless: I landed in Britain by accident.Step 7:Consolidation.? Find Henry? Roderick and Oliver were I .making a bet when they saw Henry, a poor young man. ? Know Henry? About a month ago, Henry was sailing and later he found himself carried out to sea by a strong wind. Fortunately, he 2.was spotted by a ship. And it was the ship that brought him to 3.England? Offer money to Henry ? Oliver and Roderick gave Henry a letter and told him that there was money in it. They 4.persuaded him to accept it, and made him 5.promise that it wouldn't be opened until 2 o'clock.Step 8:Language pointsa large amount of: a large quantity of; a great deal ofe.g. They bought a large amount of furniture before they moved their new house.make a bet: make an arrangement to risk money, etc. on an event of which the result is doubtful.e.g. We made a bet on the result of the match.permit sb to do something: allow somebody to do somethinge.g. My mother doesn’t permit me to ride in the street after it rained.by accident: as a result of chancee.g. I only found it by accident.stare at: look at somebody or something with the eyes wide open in a fixed gaze( in astonishment, wonder, fear, etc)to be honest: to tell you the truth; to be franke.g. To be honest, I don’t think we have a chance of winning.Step7 Homework:What do you think will happen to Henry? Will the bank-note help him or get him into trouble?

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Reading for Writing教學(xué)設(shè)計

    新人教版高中英語必修3Unit 3 Diverse Cultures-Reading for Writing教學(xué)設(shè)計

    The topic of this part is “Describe a place with distinctive cultural identity”.This section focuses on Chinese culture by introducing Chinatown, whose purpose is to show the relationship between the Chinese culture and American culture. The Chinese culture in Chinatown is an important part of American culture. Chinatown is an important window of spreading Chinese culture and the spirit homeland of oversea Chinese, where foreigners can experience Chinese culture by themselves.Concretely, the title is “Welcome to Chinatown!”, from which we can know that the article aims at introducing Chinatown. The author used the “Introduction--Body Paragraph--Conclusion” to describe the people, language, architecture, business, famous food and drinks and people’s activities, which can be a centre for Chinese culture and shows its unique charm.1. Read quickly to get main idea; read carefully to get the detailed information.2. Learn the characteristics of writing and language.3. Learn to introduce your own town according to the text.4. Learn to correct others’ writing.1. Learn the characteristics of writing and language.2. Learn to introduce your own town according to the text.Step 1 Lead in ---Small talkIn the reading part, we mentioned the Chinatown of San Francisco. How much do you know about Chinatown of San Francisco ?Chinatown is a main living place for Chinese immigrants, where you can see many Chinese-style buildings, costumes, operas, restaurants, music and even hear Chinese.Step 2 Before reading ---Predict the contentWhat is the writer’s purpose of writing this text ? How do you know ?From the title(Welcome to Chinatown) and some key words from the text(tourist, visit, visitors, experience), we can know the purpose of the text is to introduce Chinatown and show the relationship between Chinese culture and American culture.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Reading and Thinking教學(xué)設(shè)計

    新人教版高中英語必修3Unit 3 Diverse Cultures-Reading and Thinking教學(xué)設(shè)計

    Discuss these questions in groups.Q1: Have you ever been to a place that has a diverse culture ? What do you think about the culture diversity ?One culturally diverse place that I have been to is Harbin, the capital city of Heilongjiang Province. I went there last year with my family to see the Ice and Snow Festival, and I was amazed at how the culture as different to most other Chinese cities. There is a big Russian influence there, with beautiful Russian architecture and lots of interesting restaurants. I learnt that Harbin is called “the Oriental Moscow” and that many Russians settled there to help build the railway over 100 years ago.Q2: What are the benefits and challenges of cultural diversity ?The benefits: People are able to experience a wide variety of cultures, making their lives more interesting, and it can deepen the feelings for our national culture, it is also helpful for us to learn about other outstanding culture, which helps improve the ability to respect others. The challenges: People may have trouble communicating or understanding each other, and it may lead to disappearance of some civilizations and even make some people think “The western moon is rounder than his own.”Step 7 Post reading---RetellComplete the passage according to the text.Today, I arrived back in San Francisco, and it feels good (1) _____(be) back in the city again. The city succeeded in (2)_________ (rebuild) itself after the earthquake that (3)________ (occur) in 1906, and I stayed in the Mission District, enjoying some delicious noodles mixed with cultures. In the afternoon, I headed to a local museum (4)____ showed the historical changes in California. During the gold rush, many Chinese arrived, and some opened up shops and restaurants in Chinatown to earn a (5)_____ (live). Many others worked on (6)______ (farm), joined the gold rush, or went to build the railway that connected California to the east. The museum showed us (7)____ America was built by immigrants from (8)________ (difference) countries and cultures. In the evening, I went to Chinatown, and ate in a Cantonese restaurant that served food on (9)________(beauty) china plates. Tomorrow evening, I’m going to (10)__ jazz bar in the Richmond District. 答案:1. to be 2. rebuilding 3. occurred 4. that 5.living6. farms 7.how 8. different 9. beautiful 10. a

  • 北師大版初中七年級數(shù)學(xué)下冊用表格表示的變量間關(guān)系說課稿

    北師大版初中七年級數(shù)學(xué)下冊用表格表示的變量間關(guān)系說課稿

    一.情境引入:師:我們生活在一個變化的世界中,很多東西都在悄悄地發(fā)生變化你能從生活中舉出一些發(fā)生變化的例子嗎?生1:從春季到夏季氣溫在逐漸增加.生2:小樹每年都在長高長粗.生3:我杯子里的水喝一口少一口.(說著就拿起杯子喝水,引起同學(xué)哈哈大笑)師: 你這個變化中有幾個量在變化?生3:兩個,一個是喝的口數(shù),一個是水的多少?師: 它們的變化有什么聯(lián)系嗎?生3:有,隨著喝的口數(shù)的增加,瓶中的水越來越少.生4:那我的這張紙越撕越小(此時該同學(xué)順便從自己本子上撕下一張紙并將這張紙一次一次的撕下去,其他同學(xué)們點頭稱是)師: 你這個變化中又有幾個量?它們又是怎么變化的?生4:兩個,一個是撕的次數(shù),另一個是紙的大小.師:那么哪個量隨哪個量的變化而變化的呢?

  • 北師大初中七年級數(shù)學(xué)下冊用表格表示的變量間關(guān)系教案

    北師大初中七年級數(shù)學(xué)下冊用表格表示的變量間關(guān)系教案

    解:(1)電動車的月產(chǎn)量y為隨著時間x的變化而變化,有一個時間x就有唯一一個y與之對應(yīng),月產(chǎn)量y是時間x的因變量;(2)6月份產(chǎn)量最高,1月份產(chǎn)量最低;(3)6月份和1月份相差最大,在1月份加緊生產(chǎn),實現(xiàn)產(chǎn)量的增值.方法總結(jié):觀察因變量隨自變量變化而變化的趨勢,實質(zhì)是觀察自變量增大時,因變量是隨之增大還是減小.三、板書設(shè)計1.常量與變量:在一個變化過程中,數(shù)值發(fā)生變化的量為變量,數(shù)值始終不變的量稱之為常量.2.用表格表示數(shù)量間的關(guān)系:借助表格表示因變量隨自變量的變化而變化的情況.自變量和因變量是用來描述我們所熟悉的變化的事物以及自然界中出現(xiàn)的一些變化現(xiàn)象的兩個重要的量,對于我們所熟悉的變化,在用了這兩個量的描述之后更加鮮明.本節(jié)是學(xué)好本章的基礎(chǔ),教學(xué)中立足于學(xué)生的認知基礎(chǔ),激發(fā)學(xué)生的認知沖突,提升學(xué)生的認知水平,使學(xué)生在原有的知識基礎(chǔ)上迅速遷移到新知上來

  • 北師大版初中七年級數(shù)學(xué)下冊用圖象表示的變量間關(guān)系說課稿

    北師大版初中七年級數(shù)學(xué)下冊用圖象表示的變量間關(guān)系說課稿

    (1)上午9時的溫度是多少?12時呢?(2)這一天的最高溫度是多少?是在幾時達到的?最低溫度呢?(3)這一天的溫差是多少?從最高溫度到最低溫度經(jīng)過了多長時間?(4)在什么時間范圍內(nèi)溫度在上升?在什么時間范圍內(nèi)溫度在下降?(5)圖中的A點表示的是什么?B點呢?(6)你能預(yù)測次日凌晨1時的溫度嗎?說說你的理由.2、議一議:駱駝被稱為“沙漠之舟”,你知道關(guān)于駱駝的一些趣事嗎?例:它的體溫隨時間的變化而發(fā)生較大的變化:白天,隨沙漠溫度的驟升,駱駝的體溫也升高,當(dāng)體溫達到40℃時,駱駝開始出汗,體溫也開始下降.夜間,沙漠的溫度急劇降低,駱駝的體溫也繼續(xù)降低,大約在凌晨4時,駱駝的體溫達到最低點.3、如下圖,是駱駝的體溫隨時間變化而變化的的關(guān)系圖,據(jù)圖回答下列問題:

  • 北師大初中七年級數(shù)學(xué)下冊用關(guān)系式表示的變量間關(guān)系教案

    北師大初中七年級數(shù)學(xué)下冊用關(guān)系式表示的變量間關(guān)系教案

    方法總結(jié):觀察表中的數(shù)據(jù),發(fā)現(xiàn)其中的變化規(guī)律,然后根據(jù)其增減趨勢寫出自變量與因變量之間的關(guān)系式.三、板書設(shè)計1.用關(guān)系式表示變量間關(guān)系2.表格和關(guān)系式的區(qū)別與聯(lián)系:表格能直接得到某些具體的對應(yīng)值,但不能直接反映變量的整體變化情況;用關(guān)系式表示變量之間的關(guān)系簡單明了,便于計算分析,能方便求出自變量為任意一個值時,相對應(yīng)的因變量的值,但是需計算.本節(jié)課的教學(xué)內(nèi)容是變量間關(guān)系的另一種表示方法,這種表示方法學(xué)生才接觸到,學(xué)生感覺有點難.這節(jié)課的重點是讓學(xué)生掌握用關(guān)系式與表格表示變量間的關(guān)系,難點是理解這兩種表示方法的優(yōu)缺點.就此問題,通過讓學(xué)生對幾個例子比較、討論、總結(jié)、歸納兩種方法的優(yōu)點來解決,這樣學(xué)生就能很好地區(qū)分這兩種表示方法,并能對不同的問題選擇恰當(dāng)?shù)姆椒?/p>

  • 人教版新課標(biāo)小學(xué)數(shù)學(xué)六年級上冊用扇形統(tǒng)計圖表示事物說課稿

    人教版新課標(biāo)小學(xué)數(shù)學(xué)六年級上冊用扇形統(tǒng)計圖表示事物說課稿

    (這一環(huán)節(jié)由學(xué)生熟知的典型事例入手,讓學(xué)生感受到數(shù)學(xué)與生活的密切聯(lián)系。把用數(shù)描述事物和用圖描述事物整合在一起,使學(xué)生體會用圖描述事物直觀性的同時,建立數(shù)與形之間的聯(lián)系,發(fā)展抽象思維。讓學(xué)生通過自主探究、合作交流的學(xué)習(xí)方式來突破本節(jié)課的教學(xué)重點,鼓勵學(xué)生說出自己的意見,并且通過多元化的評價激發(fā)學(xué)生的學(xué)習(xí)興趣。)(三)及時練習(xí)課本103頁練一練第一題讓學(xué)生自主完成,填充空白統(tǒng)計圖。提示學(xué)生標(biāo)注名稱和數(shù)據(jù)。(這一環(huán)節(jié)讓學(xué)生體會數(shù)學(xué)在生活中的應(yīng)用)(四)拓展延伸。觀察兩幅扇形統(tǒng)計圖,回答問題。(這一環(huán)節(jié)給學(xué)生充分討論交流的時間,讓學(xué)生在討論中互相補充,在討論中不斷完整自己的知識。讓學(xué)生加深對扇形統(tǒng)計圖的理解,理解單位一未知,無法根據(jù)百分比判斷部分量的大小)(五)總結(jié)評價:

  • 北師大初中數(shù)學(xué)八年級上冊一次函數(shù)與正比例函數(shù)1教案

    北師大初中數(shù)學(xué)八年級上冊一次函數(shù)與正比例函數(shù)1教案

    煤的價格為400元/噸,生產(chǎn)1噸甲產(chǎn)品除需原料費用外,還需其他費用400元,甲產(chǎn)品每噸售價4600元;生產(chǎn)1噸乙產(chǎn)品除原料費用外,還需其他費用500元,乙產(chǎn)品每噸售價5500元.現(xiàn)將該礦石原料全部用完,設(shè)生產(chǎn)甲產(chǎn)品x噸,乙產(chǎn)品m噸,公司獲得的總利潤為y元.(1)寫出m與x的關(guān)系式;(2)寫出y與x的函數(shù)關(guān)系式.(不要求寫自變量的取值范圍)解析:(1)因為礦石的總量一定,當(dāng)生產(chǎn)的甲產(chǎn)品的數(shù)量x變化時,那么乙產(chǎn)品的產(chǎn)量m將隨之變化,m和x是動態(tài)變化的兩個量;(2)題目中的等量關(guān)系為總利潤y=甲產(chǎn)品的利潤+乙產(chǎn)品的利潤.解:(1)因為4m+10x=300,所以m=150-5x2.(2)生產(chǎn)1噸甲產(chǎn)品獲利為4600-10×200-4×400-400=600(元);生產(chǎn)1噸乙產(chǎn)品獲利為5500-4×200-8×400-500=1000(元).所以y=600x+1000m.將m=150-5x2代入,得y=600x+1000×150-5x2,即y=-1900x+75000.方法總結(jié):根據(jù)條件求一次函數(shù)的關(guān)系式時,要找準(zhǔn)題中所給的等量關(guān)系,然后求解.

  • 數(shù)據(jù)的整理教案教學(xué)設(shè)計

    數(shù)據(jù)的整理教案教學(xué)設(shè)計

    一、課前準(zhǔn)備師:同學(xué)們想一想,你同父母一起去商店買衣服時,衣服上的號碼都有哪些,標(biāo)志是什么?學(xué)生:我看到有些衣服上標(biāo)有M、S、L、XL、XXL等號碼.但我不清楚代表的具體范圍,適合什么人穿,但肯定與身高、胖瘦有關(guān).師:這位同學(xué)很善動腦,也愛觀察.S代表最小號,身高在150~155cm的人適合穿S號.M號適合身高在155~160cm的人著裝……廠家做衣服訂尺寸也并不是按所有人的尺寸定做,而是按某個范圍分組批量生產(chǎn).你覺得這種生產(chǎn)方法有什么優(yōu)點?學(xué)校要為同學(xué)們訂制校服,為此小明調(diào)查了他們班50名同學(xué)的身高,結(jié)果(單位cm).如下

  • 人教版新課標(biāo)小學(xué)數(shù)學(xué)五年級上冊用字母表示數(shù)教案2篇

    人教版新課標(biāo)小學(xué)數(shù)學(xué)五年級上冊用字母表示數(shù)教案2篇

    教學(xué)目標(biāo):1、學(xué)生經(jīng)歷體驗由具體數(shù)到用字母表示數(shù)的抽象過程;2、學(xué)生能用含有字母的式子表示計算公式;教學(xué)重、難點:目標(biāo)1教學(xué)過程:一、引入。1、師:同學(xué)們,我們開始上課,先做一個游戲:首先,我說a表示舉左手一次,我說b表示舉右手一次,我說c表示拍手一次。聽好了沒有,現(xiàn)在老師說,你們做,好不好?師:abc,acb,bac,bca,cab,cba。師:剛才我們用字母表示一個信息,其實,在日常生活中,字母可以表示很多東西,今天,我們就一起來研究“用字母表示數(shù)”。(板書課題)2、復(fù)習(xí)數(shù)量關(guān)系式:(學(xué)生讀一次)每份數(shù)×份數(shù)=總數(shù) 單價×數(shù)量=總價 速度×時間=路程總數(shù)÷份數(shù)=每份數(shù) 總價÷數(shù)量=單價 路程÷速度=時間總數(shù)÷每份數(shù)=份數(shù) 總價÷單價=數(shù)量 路程÷時間=速度評析:以學(xué)生感興趣的游戲入手,激發(fā)學(xué)生的學(xué)習(xí)興趣,同時復(fù)習(xí)數(shù)量關(guān)系式,為學(xué)習(xí)新知識奠定基礎(chǔ)。

  • 小學(xué)數(shù)學(xué)人教版五年級上冊《用字母表示數(shù)》說課稿

    小學(xué)數(shù)學(xué)人教版五年級上冊《用字母表示數(shù)》說課稿

    2、教學(xué)目標(biāo)新教材對學(xué)習(xí)目標(biāo)的分解是以“學(xué)生的全域發(fā)展”作為標(biāo)準(zhǔn)進行的,更注重了學(xué)生的主體性和目標(biāo)的可操作性。學(xué)習(xí)目標(biāo)首先被分解為“知識和能力”、“過程和方法”、“情感、態(tài)度與價值觀”。不僅解決了“學(xué)到什么”和“怎樣學(xué)習(xí)”的問題,尤其解決了“喜歡學(xué)”和“主動學(xué)”的問題。根據(jù)本節(jié)課的地位和作用,依據(jù)教學(xué)大綱以及學(xué)生的認知結(jié)構(gòu)心里特征,我制定了如下目標(biāo):① 知識目標(biāo):根據(jù)具體情境學(xué)會用字母表示數(shù); ② 能力目標(biāo):能用含字母的式子表示數(shù)量關(guān)系; ③ 情感目標(biāo):通過教學(xué)引導(dǎo)學(xué)生從現(xiàn)實生活經(jīng)歷與體驗出發(fā),激發(fā)學(xué)生學(xué)習(xí)興趣,體驗用字母表示數(shù)的簡明性,培養(yǎng)學(xué)生的抽象思維能力和歸納概括能力 ④ 教學(xué)重、難點:學(xué)會用字母表示數(shù),用含字母的式子表示數(shù)量關(guān)系。二、說教法“教必有法而教無定法”,只有方法得當(dāng),才會有效。根據(jù)本課教學(xué)內(nèi)容的特點和學(xué)生思維活動的特點,我采用了觀察比較、順勢誘導(dǎo)、交流歸納的教學(xué)方法。

  • 人教版新課標(biāo)小學(xué)數(shù)學(xué)五年級上冊用字母表示數(shù)說課稿3篇

    人教版新課標(biāo)小學(xué)數(shù)學(xué)五年級上冊用字母表示數(shù)說課稿3篇

    一、說教材:用字母表示數(shù)是人教版小學(xué)數(shù)學(xué)五年級上冊第四單元的教學(xué)內(nèi)容。在學(xué)習(xí)本單元之前,學(xué)生已經(jīng)接觸過一些用字母表示運算律,對簡單實際問題中的基本數(shù)量關(guān)系熟悉了,這些都是學(xué)生理解本單元所學(xué)知識的重要基礎(chǔ)。同時本單元知識又是學(xué)生進入代數(shù)知識學(xué)習(xí)的入門知識,是學(xué)習(xí)方程的基礎(chǔ)。二、說教學(xué)目標(biāo)和重難點:(一)目標(biāo)1、理解用字母可以表示數(shù),能用含有字母的式子表示簡單的數(shù)和運算定律,初步學(xué)習(xí)用代數(shù)符號語言進行表述交流。2、經(jīng)歷把簡單的實際問題用含有字母的式子進行表達的抽象過程,發(fā)展符號感。3、在解決問題中體會數(shù)學(xué)與生活的聯(lián)系,體會代數(shù)符號表示實際問題中數(shù)量關(guān)系的概括性和簡潔性,從而進一步感受學(xué)習(xí)數(shù)學(xué)的價值。(二)重點難點:理解用字母表示數(shù)的含義,能用含有字母的式子表示簡單的數(shù)量關(guān)系。正確地用含有字母的式子表示運算定律。

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