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人教版高中英語必修2Cultural Relics說課稿2篇
Ⅲ. Analysis of the teaching material:The topic of this unit is cultural relics. Students are quite interested in topics about different cultures around the world. This is the second period of the whole unit. As a reading class, the passage mainly talks about the history of the amber room (how it was made, sent as a gift, lost and rebuilt).According to the new national curriculum, when teaching reading, much emphasis should be put on training the students’ reading skills.Ⅳ. Teaching objectives1. Language objectives:1) Students are required to master the key words and phrases occurred in the passage (e.g. amazing, decorate, belong, in return, less than etc.)2) Students are required to learn the attributive clause and acquire the sentence pattern.2. 1) Students are required to describe a certain thing by using the new sentence patterns.2) Students are required to master two kinds of reading skills—skimming and scanning, and learn to use them in their daily reading.3. 1) Students are required to know the history of the amber room.2) Students are required to appreciate cultural relics and understand the importance of protecting them.Ⅴ. Teaching important and difficult points1) the new words, phrases, and sentence pattern in the course of reading.2) Teaching difficult point: Help the students master two kinds of reading skills—skimmingand scanning and learn to apply them in daily use.Ⅵ. Teaching methods:Task-based method & Top-down model Ⅶ. Teaching aids: PPT, pictures, blackboard Ⅷ. Teaching procedure:
人教版高中英語必修2The Olympic Games說課稿2篇
Purpose of my design:To ask the students to do these two tasks will make the Ss predict the story of this passage. As a result, it will deepen Ss’ memory of this story because they will have their own understanding of this story.Step 3. While-readingTask 1. (Individual work _____min)Skimming: ask students to skim the text and the main ideas of each paragraph in this passage. Please read it quickly and then match the sentences with the letters.Task 2. (Individual work _____min)Scanning: read the text quickly and decide the whether the following statements are true or false and give reasons.Task 3. (Pair work _____min)Listen to the tape and fill in the banks. Then read the paragraph with expression to your partner.Task4 (individual work min)Listen to the tape again and write down the main idea in one sentence.Purpose of my design: Enable students to understand the given material better by using different reading skills. And proper competition can arouse the Ss’ interest in English learning. “Task-based” teaching method is used here todevelop the Ss’ ability of communication and also their ability of co-operation will be well trainedStep 4. Post-readingTask 1. (Individual work, pair work, group work, class work; _____min)Discussion (group of 4):1. If you were Hippomenes, would you run against Atlanta?2. Do you think Hippomenes deserved to win the race? Why or why not?Step 5. HomeworkPlease read the story again carefully after class and imagine: What will happen during the race between Hippomenes and Atlanta? Who do you think will win the race? Do you think Atlanta would marry Hippomenes? Write an end for the story with thses questions.Purpose of my design: Homework is so important and necessary for to master the knowledge they learned after class. It will check whether the Ss achieve the teaching aims.Part 5 Blackboard design
人教版高中英語必修4Women of achievement說課稿4篇
Good morning, distinguished judges:It’s my honor to talk about my teaching ideas with you. Today my topic is Women of Achievement. My presentation consists of six parts: the analysis of teaching material and student, teaching aims, key and difficult points, teaching and studying method, teaching procedures and blackboard design.First, let’s focus on the analysis of teaching material. This lesson is from New Senior English for China Student’s Book 4 Unit 1, the reading part. The main topic of the passage is the introduction of a student of Africanwildlife. After this lesson, the students will learn more information about her studying chimps in Africa, and their reading and speaking abilities can be developed as well.The next part is the analysis of students. My students are in senior high students. They have learnt English for many years, they’ve known many words and sentences, but their speaking and reading abilities are still not very good. So I will practice their speaking and reading abilities through different exercises.According to the New Standard Curriculum and the present situation, I set the teaching aims as follows: firstly, knowledge aims. Students can grasp some new words, such as worthwhile, move off. Moreover, students can understand the content of the passage and get familiar with the topic of studying chimps in wildlife. Secondly, ability aims. Students can use reading strategies such as skimming and scanning in reading process. Thirdly, emotional aims. Students can have the awareness of protecting animals and care about animals.Based on the above analysis, the key point of this lesson is to get the main idea and the detailed information from the passage; the difficult point is to talk about the wildlife protection and use reading strategies.
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(xué)生綜合運(yùn)用語言的能力，學(xué)習(xí)用恰當(dāng)?shù)挠⒄Z描述科學(xué)家的故事。這是本課的教學(xué)難點(diǎn)。教師可以使用完形填空的方式來幫助學(xué)生整理語篇，從而來降低難度。本課的教學(xué)重點(diǎn)的突破方法是：在閱讀前，讓學(xué)生初步了解得出科學(xué)觀點(diǎn)所需要的基本程序，從而輕松而自然地導(dǎo)入文章的閱讀；在閱讀過程中，由易到難設(shè)計(jì)快速閱讀和精讀的問題，層層推進(jìn)各種閱讀活動(dòng)，讓學(xué)生對(duì)閱讀內(nèi)容從整體感知到細(xì)節(jié)理解，最后深層讀懂整篇文章，同時(shí)加強(qiáng)閱讀策略的指導(dǎo)，讓每個(gè)學(xué)生都主動(dòng)參與課堂教學(xué)活動(dòng)，最終達(dá)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(dāng)指導(dǎo)下，就以下2個(gè)問題展開討論，讓學(xué)生就所知、所學(xué)、所感和所想融入話題，然后抽若干同學(xué)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(duì)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(jì)轉(zhuǎn)型，就應(yīng)該將話題的范圍明確在這一領(lǐng)域內(nèi)。通過材料3的相關(guān)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(qiáng)綜合競爭力等三個(gè)整改方針上下功夫。因而引導(dǎo)學(xué)生針對(duì)優(yōu)勢與不足提出建議，以三個(gè)整改方針為基準(zhǔn)，衡量建議的可行性是鍛煉學(xué)生解決此類問題的有效途徑。在此我將教會(huì)學(xué)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(duì)學(xué)生的建議和教材資料分析所羅列的10點(diǎn)整改思路，由學(xué)生自由發(fā)言提出看法，通過教師的指導(dǎo)和學(xué)生的討論，進(jìn)而確定經(jīng)濟(jì)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(duì)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(huì)加深學(xué)生的印象，通過建議和優(yōu)勢的對(duì)應(yīng)關(guān)系，將不難找出此類問題的解題思路。
人教版高中生物必修1細(xì)胞增殖說課稿
f.有絲分裂的意義（討論分析教學(xué)），首先引導(dǎo)學(xué)生結(jié)合所學(xué)知識(shí)討論有絲分裂的的作用，最后有教師歸納總結(jié)，并要求學(xué)生在理解的基礎(chǔ)上記憶。g.無絲分裂（圖形直觀教學(xué)、簡介），本部分內(nèi)容不是教學(xué)的重點(diǎn)，內(nèi)容也相對(duì)簡單，所以我的教學(xué)方法是直接給學(xué)生展示掛圖，再進(jìn)行簡短介紹，讓學(xué)生了解即可。h.引出減數(shù)分裂的概念，為第五章學(xué)習(xí)打下基礎(chǔ)。小結(jié)：新課講完以后由教師對(duì)本節(jié)內(nèi)容進(jìn)行總結(jié)鞏固和反饋：進(jìn)行一些課堂練習(xí)達(dá)到鞏固和反饋的作用。最后布置作業(yè)，各種難度的作業(yè)題目均設(shè)置一些，其中簡單題比重大，難題要求學(xué)生選作，這樣提高學(xué)生學(xué)習(xí)積極性。2教學(xué)媒體程序設(shè)計(jì): 細(xì)胞周期的概念（多媒體課件演示周期動(dòng)畫）植物細(xì)胞有絲分裂（多媒體課件演示分裂各期動(dòng)畫）動(dòng)植物細(xì)胞有絲分裂異同點(diǎn)（多媒體課件演示分裂各期動(dòng)畫）有絲分裂過程中DNA和染色體數(shù)量的變化規(guī)律（掛圖演示，包括表格和函數(shù)圖象）
人教版高中生物必修2伴性遺傳說課稿
（1觀察圖解，色盲基因在性別間是如何傳遞的呢？（女--女、女--男、男--女）（2）為什么不能由男性傳給男性？（色盲基因是在X染色體上，因此色盲基因是隨X染色體的傳遞而傳遞。）（3）男性的色盲基因怎樣才能傳給男性呢？（通過女兒，傳給外孫即交叉遺傳）（4）從圖解看色盲在男女中的發(fā)病情況怎樣？（男性多于女性）（5）從社會(huì)調(diào)查也是這樣，你是否能從基因和染色體的角度加以解釋？（提示：女性染色體的構(gòu)成，結(jié)合基因位置及顯隱性進(jìn)行分析）歸納特點(diǎn)：歸納出色盲基因遺傳的特點(diǎn)并擴(kuò)展到X染色體隱性遺傳的特點(diǎn)上。色盲基因遺傳（X隱性遺傳）的特點(diǎn)：（1）男患者多于女患者（2）交叉遺傳（3）女病兒子必病，男正女兒必正等。問題探討：利用“遺傳圖解”結(jié)合“問題鏈”繼續(xù)探討，拓展到抗維生素D即X 染色體顯性遺傳的特點(diǎn)。（6）色盲基因在X染色體上屬隱性基因，子代表現(xiàn)男多于女，對(duì)應(yīng)的正常色覺基因則屬于X顯性基因，子代表現(xiàn)應(yīng)如何？（女多于男）
人教版高中生物必修2染色體變異說課稿
四、說教學(xué)程序（一）.溫故知新、導(dǎo)入新課復(fù)習(xí)提問:基因突變導(dǎo)致生物變異的原因是什么?回答:基因突變是基因結(jié)構(gòu)發(fā)生改變，從而使遺傳信息改變，使蛋白質(zhì)結(jié)構(gòu)改變、生物性狀改變，即生物發(fā)生了變異。那么，基因是什么?它和染色體又有何關(guān)系?回答:基因是有遺傳效應(yīng)的DNA片斷，染色體是DNA的載體，基因在染色體上呈線形排列。引出新知:對(duì)于一個(gè)生物體來說，正常情況下，其染色體的結(jié)構(gòu)和數(shù)量都是穩(wěn)定的。但在自然條件或人為因素的影響下，染色體的結(jié)構(gòu)和數(shù)量均會(huì)發(fā)生改變，從而導(dǎo)致生物性狀的改變，這就屬于染色體變異。（二）.把握重點(diǎn)、突破難點(diǎn)重點(diǎn)的把握：1、染色體結(jié)構(gòu)的變異播放影片:貓叫綜合征幼兒。讓學(xué)生觀察: 患兒哭聲輕、音調(diào)高，很像貓叫。教師補(bǔ)充: 患兒的征狀---兩眼較低、耳位低下，存在著嚴(yán)重的智力障礙。闡述病因---染色體片段缺失
人教版高中英語必修1Journey Down the Mekong說課稿
2. let the Ss complete the forms paragraph by paragraph. Purpose here is to help Ss to get the habit of reading a passage as a whole, and pay attention to the organization of the text, as a result the Ss will fully understand the whole passage.3. ask Ss to retell the passage with the help of the key words in the form.Since the Ss in the class are in different levels, so I let them to fill in the blank to understand the meaning of the words and phrases better. ( That’s all for the while-reading. Now let’s move to the fifth step.)Step V: Post-reading (10mins) ---DiscussionIn this part students are asked to discuss in groups and list Wang Kun’s and Wang Wei’s attitudes about the trip. After that, Ss are encouraged to express their attitudes with the whole class. Collect their answers and don’t forget to praise them even if their answers may not be perfect.In this activity, discussion provides a vivid and active learning environment for Ss to communicate in English with newly learned language items. (Finally it comes to the homework.)StepⅥ: Homework (1min)1. Ss are required to read the text again after class and figure out the meaning of some complex sentences.2. Do the exercises on P19; This can help Ss to consolidate what they’ve learnt and make preparation for the next lessonPart4. Blackboard design.（說板書設(shè)計(jì)）On the top, there is the title of this lesson. On the left, there are main ideas for each paragraph. On the right, there are some new words and expressions.Unit 3 Travel journalJourney down the MekongMain idea of each para.:Para1: deciding to take a great bike trip along the Mekong river.Para2: Different attitudes between Wang kun and Wang wei.
人教版高中英語必修5First aid說課稿6篇
In this class, I have 3 teaching aims, that is, knowledge aims, ability aims and emotion aims.1) Knowledge-Teach students new words and expressions, such as temporary, bleed,sprain choke, first aid, fall ill and so on.-Enable students to have a better understanding for some basic knowledge of first aid.2) Ability-Train students’ speaking, reading and writing abilities by different teaching activities, such as skimming, comprehending, team work, role play, retelling and writing.-Develop students’ reading strategy on how to move general idea to specific information.3) Emotion-Promote students’ awareness of giving first aid.- Cultivate students’ creativities.Then let’s come to my teaching methods and activities.III. Teaching methods and activities:To achieve different teaching aims, various kinds of teaching methods and activities will be adopted throughout this period, such as TBL (task-based learning), skimming, team work, brainstorm and others, which can offer students opportunities to fulfill tasks in which they can use language to achieve a specific outcome.IV. Teaching aids:Computer and blackboardV. Teaching important points:1) Make students have a clear mind for the structure of the text.2) Help students understand the theme of the text.VI. Teaching difficulties:1) So many new words may affect students’ understanding.2) How to get students to know about the functions of the skin and thecauses, characteristics and treatments for different degree burns,and the knowledge about giving first aid. VII. Blackboard design:
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5Making the news說課稿4篇
今天我們來介紹一下必修五第四單元的授課方式。這個(gè)單元的題目是Making the news。應(yīng)該是學(xué)生比較感興趣的話題，學(xué)生往往對(duì)新聞工作充滿好奇，所以我們可以利用這個(gè)機(jī)會(huì)多設(shè)計(jì)一些師生互動(dòng)和學(xué)生互動(dòng)，來激發(fā)起學(xué)習(xí)的積極性，提高學(xué)習(xí)效率。同時(shí)我們可以利用這個(gè)單元不僅幫助學(xué)生掌握語言知識(shí)，培養(yǎng)語言能力，同時(shí)讓其了解新聞工作的重要性，培養(yǎng)起社會(huì)智能感。這個(gè)單元分為六個(gè)課時(shí)，它的教學(xué)目標(biāo)是這樣的：語言目標(biāo)是掌握詞匯表中的常用單詞和短語，掌握倒裝句的一些基本用法。 技能目標(biāo)是能初步掌握約會(huì)的基本句型并在真實(shí)的場景下正確運(yùn)用。新聞報(bào)道類文章的寫作技能。采訪的基本規(guī)范和溝通技能。情感目標(biāo)是對(duì)新聞報(bào)道的客觀性和真實(shí)性有更好的理解。對(duì)新聞?dòng)浾叩穆殬I(yè)有更深入的了解，并能體會(huì)其工作的重要性。下面我們來介紹一下第一課時(shí)的授課方式，第一課的教學(xué)目標(biāo)是這樣的第一課時(shí)的教學(xué)目標(biāo)語言目標(biāo):單詞：Occupation, journalist, editor, photographer, curious, personality, enthusiasm
高中語文人教版必修二《歸園田居》說課稿
一、說教材本節(jié)課選自于人教版語文必修二第二單元詩三首中的一首詩歌，它是陶淵明歸隱后的作品。寫的是田園之樂，實(shí)際表明的是作者不愿與世俗同流合污的心聲，甘愿守著自己的拙志回歸田園。學(xué)習(xí)該詩，有助于學(xué)生了解山水田園詩的特點(diǎn)，感受者作者不同流俗的高尚情操，同時(shí)可以培養(yǎng)學(xué)生初步的鑒賞古典詩歌的能力。
高中語文人教版必修三《動(dòng)物游戲之謎》說課稿
科學(xué)是人類認(rèn)識(shí)世界的重要工具，閱讀科普說明文不僅可以啟迪心智，了解更多知識(shí)。而且更夠激發(fā)學(xué)生對(duì)科學(xué)的興趣。學(xué)習(xí)這些文章要注重學(xué)生科學(xué)精神的培養(yǎng)，關(guān)注科學(xué)探索的過程，感受科學(xué)家在科學(xué)探索中表現(xiàn)的人格魅力。我們知道一些科學(xué)家就是因?yàn)殚喿x了相關(guān)的科普文章才對(duì)某一學(xué)科產(chǎn)生興趣，從而走上成功之路的。我們在講解的時(shí)候可以跟學(xué)生列舉一些例子，讓學(xué)生認(rèn)識(shí)到一篇好的科普文章的重大意義。
工作總結(jié)寫作，貴在不斷創(chuàng)新
一、實(shí)現(xiàn)總匯總攬 在進(jìn)行“總”時(shí)，要提高認(rèn)識(shí)的深度，實(shí)現(xiàn)情況總匯到情況總攬的轉(zhuǎn)變。情況總匯，要求把各種情況了解得全面而豐富，似乎一天也說不完；情況總攬，就是要準(zhǔn)確掌握情況中的關(guān)鍵和要害，用一兩句話把情況說清楚、講明白。 在“總”的過程中，總匯是寫作的基礎(chǔ)，需要花時(shí)間、下功夫；總攬是寫作的升華，需要有智慧、拼能力，這種智慧和能力，就是總體駕馭、宏觀把握、提綱挈領(lǐng)的能力。 ，：總結(jié)工作業(yè)績時(shí)，要把情況說清楚，做到心中有數(shù)。既要讓人知道你干了什么，又要讓人明白你是怎么干的，工作中有什么亮點(diǎn)，有什么經(jīng)驗(yàn)值得推廣。這就需要在“講清楚、說明白”上下很大的功夫。 要學(xué)會(huì)跳出局外進(jìn)行對(duì)照和比較，弄清楚哪些是真正的亮點(diǎn)和成績，哪些是主要的問題和不足，哪些事情比較大需要大寫特寫，哪些事情比較小或者根本不重要，不需要寫或者只需要一筆帶過。這樣才能做到重點(diǎn)突出、詳略得當(dāng)、有輕有重。
廣東省引進(jìn)創(chuàng)新科研團(tuán)隊(duì)合同書
締約各方均應(yīng)共同遵守《中華人民共和國合同法》、《中華人民共和國著作權(quán)法》、《中華人民共和國專利法》等法律及廣東省委、省政府《關(guān)于加快吸引培養(yǎng)高層次人才的意見》[粵發(fā)[2008]15號(hào)]，《廣東省引進(jìn)創(chuàng)新科研團(tuán)隊(duì)評(píng)審暫行辦法》、《廣東省引進(jìn)創(chuàng)新科研團(tuán)隊(duì)專項(xiàng)資金管理暫行辦法》等管理辦法，嚴(yán)格遵守并認(rèn)真履行本合同的各項(xiàng)條款。第一條 1. 甲方根據(jù)省委、省政府確定的廣東省創(chuàng)新科研團(tuán)隊(duì)資助計(jì)劃提供專項(xiàng)工作經(jīng)費(fèi)。2. 甲方有權(quán)監(jiān)督、檢查乙方、丙方以及協(xié)作單位履行合同情況。3. 合同履行期間，甲方有權(quán)委派領(lǐng)域?qū)＜医M、項(xiàng)目監(jiān)理或科技管理中介機(jī)構(gòu)，對(duì)乙方、丙方及協(xié)作單位履行本合同及與本合同約定內(nèi)容相關(guān)的合同的情況進(jìn)行專項(xiàng)財(cái)務(wù)檢查、中期評(píng)價(jià)、財(cái)政支出績效評(píng)價(jià)和實(shí)施情況檢查。4. 甲方享有檢查團(tuán)隊(duì)配套資金到位情況的權(quán)利。5. 乙方和丙方完成本合同約定的科研項(xiàng)目后，甲方會(huì)同省財(cái)政廳負(fù)責(zé)組織對(duì)項(xiàng)目進(jìn)行財(cái)務(wù)審計(jì)與驗(yàn)收。驗(yàn)收工作按另行制定的廣東省引進(jìn)創(chuàng)新科研團(tuán)隊(duì)驗(yàn)收辦法執(zhí)行。
人教版高中數(shù)學(xué)選擇性必修二等比數(shù)列的概念 (1) 教學(xué)設(shè)計(jì)
新知探究我們知道，等差數(shù)列的特征是“從第2項(xiàng)起，每一項(xiàng)與它的前一項(xiàng)的差都等于同一個(gè)常數(shù)” 。類比等差數(shù)列的研究思路和方法，從運(yùn)算的角度出發(fā)，你覺得還有怎樣的數(shù)列是值得研究的？1.兩河流域發(fā)掘的古巴比倫時(shí)期的泥版上記錄了下面的數(shù)列:9,9^2,9^3,…,9^10; ①100,100^2,100^3,…,100^10; ②5,5^2,5^3,…,5^10. ③2.《莊子·天下》中提到：“一尺之錘，日取其半，萬世不竭.”如果把“一尺之錘”的長度看成單位“1”，那么從第1天開始，每天得到的“錘”的長度依次是1/2,1/4,1/8,1/16,1/32,… ④3.在營養(yǎng)和生存空間沒有限制的情況下，某種細(xì)菌每20 min 就通過分裂繁殖一代，那么一個(gè)這種細(xì)菌從第1次分裂開始，各次分裂產(chǎn)生的后代個(gè)數(shù)依次是2,4,8,16,32,64,… ⑤4.某人存入銀行a元，存期為5年，年利率為 r ，那么按照復(fù)利，他5年內(nèi)每年末得到的本利和分別是a(1+r),a〖(1+r)〗^2,a〖(1+r)〗^3,a〖(1+r)〗^4,a〖(1+r)〗^5 ⑥
人教版高中數(shù)學(xué)選擇性必修二等差數(shù)列的前n項(xiàng)和公式（1）教學(xué)設(shè)計(jì)
高斯（Gauss，1777－1855），德國數(shù)學(xué)家，近代數(shù)學(xué)的奠基者之一. 他在天文學(xué)、大地測量學(xué)、磁學(xué)、光學(xué)等領(lǐng)域都做出過杰出貢獻(xiàn). 問題1：為什么1＋100＝2＋99＝…＝50＋51呢？這是巧合嗎？試從數(shù)列角度給出解釋.高斯的算法：（1+100）+（2+99）+…+(50+51)= 101×50=5050高斯的算法實(shí)際上解決了求等差數(shù)列：1，2，3，…，n，"… " 前100項(xiàng)的和問題.等差數(shù)列中，下標(biāo)和相等的兩項(xiàng)和相等.設(shè) an＝n，則 a1＝1，a2＝2，a3＝3，…如果數(shù)列{an} 是等差數(shù)列，p，q，s，t∈N*，且 p＋q＝s＋t，則 ap＋aq＝as＋at 可得：a_1+a_100=a_2+a_99=?=a_50+a_51問題2： 你能用上述方法計(jì)算1＋2＋3＋… ＋101嗎？問題3： 你能計(jì)算1＋2＋3＋… ＋n嗎？需要對(duì)項(xiàng)數(shù)的奇偶進(jìn)行分類討論.當(dāng)n為偶數(shù)時(shí)， S_n=(1+n)+[(2+(n-1)]+?+[(n/2+(n/2-1)]=(1+n)+(1+n)…+(1+n)=n/2 (1+n) =(n(1+n))/2當(dāng)n為奇數(shù)數(shù)時(shí)， n－1為偶數(shù)
人教版高中數(shù)學(xué)選擇性必修二導(dǎo)數(shù)的四則運(yùn)算法則教學(xué)設(shè)計(jì)
求函數(shù)的導(dǎo)數(shù)的策略(1)先區(qū)分函數(shù)的運(yùn)算特點(diǎn)，即函數(shù)的和、差、積、商，再根據(jù)導(dǎo)數(shù)的運(yùn)算法則求導(dǎo)數(shù)；(2)對(duì)于三個(gè)以上函數(shù)的積、商的導(dǎo)數(shù)，依次轉(zhuǎn)化為“兩個(gè)”函數(shù)的積、商的導(dǎo)數(shù)計(jì)算．跟蹤訓(xùn)練1 求下列函數(shù)的導(dǎo)數(shù)：(1)y＝x2＋log3x； (2)y＝x3·ex； (3)y＝cos xx.[解] (1)y′＝(x2＋log3x)′＝(x2)′＋(log3x)′＝2x＋1xln 3.(2)y′＝(x3·ex)′＝(x3)′·ex＋x3·(ex)′＝3x2·ex＋x3·ex＝ex(x3＋3x2)．(3)y′＝cos xx′＝?cos x?′·x－cos x·?x?′x2＝－x·sin x－cos xx2＝－xsin x＋cos xx2.跟蹤訓(xùn)練2 求下列函數(shù)的導(dǎo)數(shù)（1）y＝tan x； （2）y＝2sin x2cos x2解析：（1）y＝tan x＝sin xcos x，故y′＝?sin x?′cos x－?cos x?′sin x?cos x?2＝cos2x＋sin2xcos2x＝1cos2x.（2）y＝2sin x2cos x2＝sin x，故y′＝cos x.例5 日常生活中的飲用水通常是經(jīng)過凈化的，隨著水的純凈度的提高，所需進(jìn)化費(fèi)用不斷增加，已知將1t水進(jìn)化到純凈度為x%所需費(fèi)用（單位：元），為c(x)=5284/(100-x) (80<x<100)求進(jìn)化到下列純凈度時(shí)，所需進(jìn)化費(fèi)用的瞬時(shí)變化率：（1） 90% ；（2） 98%解：凈化費(fèi)用的瞬時(shí)變化率就是凈化費(fèi)用函數(shù)的導(dǎo)數(shù)；c^' (x)=〖(5284/(100-x))〗^'=(5284^’×(100-x)-"5284 " 〖(100-x)〗^’)/〖(100-x)〗^2 =(0×(100-x)-"5284 " ×(-1))/〖(100-x)〗^2 ="5284 " /〖(100-x)〗^2