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人教A版高中數學必修一對數函數的概念教學設計(2)

  • 新人教版高中英語必修3Unit 2 Morals and Virtues教學設計二

    新人教版高中英語必修3Unit 2 Morals and Virtues教學設計二

    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)內容學習,學生能否結合文本特點總結林巧稚的人生原則和人格品質特征;3、通過本節(jié)內容學習,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教學設計三

    新人教版高中英語必修3Unit 2 Morals and Virtues教學設計三

    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、動作及其經歷;3、通過本節(jié)內容學習,學生能否獨立完成練習冊和導學案中的相關練習。

  • 新人教版高中英語必修3Unit 2 Morals and Virtues教學設計四

    新人教版高中英語必修3Unit 2 Morals and Virtues教學設計四

    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涵;3、通過本節(jié)內容學習,學生能否根據故事的起因、經過和結果來深入理解故事的情節(jié),從而了解文章的層次結構;4、結合現實生活案例發(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。

  • 對數函數及其性質說課稿

    對數函數及其性質說課稿

    一、教材分析1、教材的地位和作用函數是高中數學的核心,而對數函數是高中階段所要研究的重要的基本初等函數之一.本節(jié)內容是在學生已經學過指數函數、對數及反函數的基礎上引入的,因此既是對上述知識的拓展和延伸,也是對函數這一重要數學思想的進一步認識與理解.本節(jié)課的學習使學生的知識體系更加完整、系統(tǒng),為學生今后進一步學習對數方程、對數不等式等提供了必要的基礎知識.

  • 北師大初中數學九年級上冊投影的概念與中心投影1教案

    北師大初中數學九年級上冊投影的概念與中心投影1教案

    ∴∠AEP=∠ACB,∠APE=∠ABC,∴△AEP∽△ACB.∴PECB=APAB,即1.89=2AB,解得AB=10(m).∴QB=AB-AP-PQ=10-2-6.5=1.5(m),即小明站在點Q時在路燈AD下影子的長度為1.5m;(2)同理可證△HQB∽△DAB,∴HQDA=QBAB,即1.8AD=1.510,解得AD=12(m).即路燈AD的高度為12m.方法總結:解決本題的關鍵是構造相似三角形,然后利用相似三角形的性質求出對應線段的長度.三、板書設計投影的概念與中心投影投影的概念:物體在光線的照射下,會    在地面或其他平面上留    下它的影子,這就是投影    現象中心投影概念:點光源的光線形成的 投影變化規(guī)律影子是生活中常見的現象,在探索物體與其投影關系的活動中,體會立體圖形與平面圖形的相互轉化關系,發(fā)展學生的空間觀念.通過在燈光下擺弄小棒、紙片,體會、觀察影子大小和形狀的變化情況,總結規(guī)律,培養(yǎng)學生觀察問題、分析問題的能力.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學設計三

    新人教版高中英語必修3Unit 3 Diverse Cultures教學設計三

    The price is the same as(the price was)before the war.價格與戰(zhàn)前相同。(4)定語從句中的“關系代詞+助動詞be”可以省略。The ticket(that/which was)booked by his sister has been sent to him.他妹妹訂的那張票已送到了他那里。Step 5 PracticeActivity 3(1) Guide students to complete the four activities in the Using Structures part of exercise book, in which activities 1 and 2 focus on ellipsis in dialogue answers, activity 3 focus on signs and headlines, two typical situations where ellipsis is used, and activity 4 focus on ellipsis in diary, an informal style.(2) Combine the examples in the above activities, ask students to summarize the omitted situations in groups, and make their own summary into a poster, and post it on the class wall after class to share with the class.(This step should give full play to the subjectivity of students, and teachers should encourage students to conclude different ellipsis phenomena according to their own understanding, they can conclude according to the different parts omitted in the sentence.)Step 6 Homework1. Understand and master the usages of ellipsis;2. Finish the other exercises in Using structures of Workbook.1、通過本節(jié)內容學習,學生是否理解和掌握省略的用法;2、通過本節(jié)內容學習,學生能否根據上下文語境或情景恢復句子中省略的成分,體會使用省略的效果;3、通過本節(jié)內容學習,學生能否獨立完成練習冊和導學案中的相關練習。

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations教學設計二

    新人教版高中英語必修3Unit 1 Festivals and Celebrations教學設計二

    1. Ss look at the picture and scan the passage to understand the main idea while teacher is giving the following questions to inspire Ss to think.*Where are those people?*What are they doing?*Why are they so excited?2. Ss complete the passage with the appropriate -ing form. Then discuss and check the answers with class.Answers: boring, interesting, taking, exciting, amazing3. The teacher raises questions for the students to discuss and encourages them to express their opinions.*Do you like La Tomatina? Why or why not?4. Each group representative reports the discussion result, the teacher gives feedback and the evaluation.Step 6 PracticeActivity 41. Ss complete the Ex 2 in Using structures.2. Check the answers after finishing the exercises.①The dragon boat races are the most exciting part of the Dragon Boat Festival.② The children were excited to go Easter egg hunting.③What an amazing performance! This is the best music festival I have ever been to.④We were amazed by her funny-looking hat.⑤His inspiring speech at the conference won the admiration/ favour of the audience.⑥This is a challenging game to test your memory and observation capabilities. 3. T asks Ss to finish Ex 3 and 4 in Using structures by themselves, then check the answers with class.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)內容學習,學生是否理解和掌握動詞-ing形式作定語和表語的功能和意義;2、通過本節(jié)內容學習,學生能否在理解文段內容的基礎上,根據上下文語境和表達邏輯,能正確運用動詞-ing形式描述節(jié)日慶典。3、通過本節(jié)內容學習,學生是否歸納和積累用于表達情緒的相關詞匯。

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations教學設計三

    新人教版高中英語必修3Unit 1 Festivals and Celebrations教學設計三

    *wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.)Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通過本節(jié)內容學習,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)內容學習,學生能否結合文本特點快速而準確地找到主題句;3、通過本節(jié)內容學習,學生能否理清論說文的語篇結構和文本邏輯,了解節(jié)日風俗發(fā)展與變遷,感悟節(jié)日的內涵與意義。

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學設計二

    新人教版高中英語必修3Unit 3 Diverse Cultures教學設計二

    (2)Consolidate key vocabulary.Ask the students to complete the exercises of activity 6 by themselves. Then ask them to check the answers with their partners.(The first language:Damage of the 1906 San Francisco earthquake and fire.A second language: Yunnan - one of the most diverse provinces in China).Step 5 Language points1. The teacher asks the students to read the text carefully, find out the more 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)內容學習,學生能否結合文本特點了解文章的結構和作者的寫作邏輯;3、通過本節(jié)內容學習,學生能否了解舊金山的城市風貌、文化特色,以及加利福尼亞州的歷史,體會多元文化對美國的影響。

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學設計四

    新人教版高中英語必修3Unit 3 Diverse Cultures教學設計四

    該板塊的活動主題是“介紹一個有顯著文化特征的地方”( Describe a place with distinctive cultural identity)。該板塊通過介紹中國城繼續(xù)聚焦中國文化。本單元主題圖呈現的是舊金山中國城的典型景象, Reading and Thinking部分也提到中國城,為該板塊作鋪墊。介紹中國城的目的主要是體現中國文化與美國多元文化的關系,它是美國多元文化的重要組成部分。中國城也是海外華人的精神家園和傳播中國文化的重要窗口,外國人在中國城能近距離體驗中國文化。1. Read the text to understand the cultural characteristics of Chinatown in San Francisco and the relationship between Chinese culture and American multiculturalism;2. Through reading, learn to comb the main information of the article, understand the author's writing purpose and writing characteristics;3. Learn to give a comprehensive, accurate, and organized description of the city or town you live in;Learn to revise and evaluate your writing.Importance:1. Guide the students to read the introduction of Chinatown in San Francisco and grasp its writing characteristics;2. Guide students to introduce their city or town in a comprehensive, accurate and organized way;3. Learn to comb the main information of the article, understand the author's writing purpose, and master the core vocabulary.

  • 一次函數教學教案

    一次函數教學教案

    教學目標1.能從實際問題中得到函數關系式,學會積累函數的建模思想;2.能對不同背景下函數模型(關系式)的比較,抽象出一次函數和正比例函數的概念,發(fā)展抽象思維及概括能力;3.初步理解一次函數與正比例函數的概念;4.知道一次函數與正比例函數的聯(lián)系和區(qū)別,體驗特殊和一般的辯證關系;5.會判斷兩個變量之間的關系是一次函數還是正比例函數;6.能根據問題信息,確定一次函數與正比例函數的表達式,提升數學應用能力;7.會根據一次函數與正比例函數的概念,求字母的取值;8.在一次函數和正比例函數概念的形成與應用過程中, 體驗函數與人類生活的密切聯(lián)系,增強對函數學習的求知。感受合作交流的必要性,同時提高學生的觀察、抽象、概括的能力和語言表達能力,從而培養(yǎng)學生對學習數學的興趣。

  • 新人教版高中英語必修3Unit 5 The Value of Money-Reading and Thinking教學設計一

    新人教版高中英語必修3Unit 5 The Value of Money-Reading and Thinking教學設計一

    Everybody wants to get wealth.In today’s material world,making money or becoming wealthy symbolizes a person’s success and capability. Many people just make every effort, pay any price to attain greater wealth. With money,they can buy nice, large apartments in nice neighborhood. With money they can own luxurious cars. Wealth seems to bring all happiness in life.But is wealth the only road to happiness? Not really. There are many things in the world, which are beyond the means of money, such as friendship, love, health and knowledge. People are so preoccupied with struggling for money that they have no time or would not take the time to form or maintain friendship. What happiness can they feel living as lonely miserable creatures without love or friends in the world even if they accumulate tremendous wealth?In my opinion, people can’t do anything without money, but money is not everything. What money will bring you depends on your personal belief and goal in life. If you are kind enough to help others, especially the poor, money is a good thing to you. With it, you can do much more for the benefit of people and your country, and it will add to your own happiness. If you want money just for your own needs, you’ll never be satisfied or happy. In a word,you should have money spent for more people. Only then can money be the source of your happiness.Step 8 Homework4 students in a group, one acts Roderick, one Oliver, one servant and the fourth one acts Henry Adams, then listen to the tape, pay more attention to the difference between American English and British English in pronunciation, stress, tone.

  • 新人教版高中英語必修3Unit 4 Space Exploration-Listening&Speaking&Talking教學設計一

    新人教版高中英語必修3Unit 4 Space Exploration-Listening&Speaking&Talking教學設計一

    Listening and Speaking introduces the topic of “talking about how to become an astronaut”. This period is aimed to inform students some details about the requirements of being an astronaut. Students can be motivated and inspired by the astronauts. Teachers ought to encourage students to learn from them and let them aim high and dream big.Listening and Talking introduces the theme of "talk about life in space". This part also informs students more details about life in space and can inspire students to be curious about this job. 1. Guide students to listen for numbers concerning dates, years and ages etc2. Cultivate students' ability to talk about how to become an astronaut and life in space ; 3. Instruct students to use functional sentences of the dialogue such as “ first of all, I am not sure, so what might be .. I guess.. I wonder…I am curious…)appropriately.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to become a qualified astronaut and describe the life in space.Part 1: Listening and SpeakingStep 1: Lead inPredictionThe teacher can ask students to predict what the listening text is about by looking at the pictures.About how to become an astronaut./the requirements of an astronautStep 2: Then, play the radio which is about an interview a. And after finishing listening for the first time, the students need to solve the following tasks.

  • 新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學設計一

    新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學設計一

    Q4: What is the function of the International exploration ?Having astronauts from different countries on boardQ5: What can you learn from Para 4 ?China has made great achievements in exploring spaceQ6: What is the attitude to the space exploration ?SupportiveStep 6 Post reading---RetellPeople have always wanted to learn more about space. Before the mid-20th century, most people felt (1)_________ (travel) into space was an impossible dream. However, (2)____ the help of scientists, peoplesucceeded in realizing their dream (3) _________ (explore) space. On 4 October 1957, the Sputnik 1 satellite (4) ____________(launch) by the USSR. (5) ________________ scientists try to make sure nothing goes wrong, accidents can still happen. These disasters made everyone(6)___________(disappoint), but people still believe in the importance of (7) ________(carry) on space exploration. In 2003, China became the third country to (8)_____________ (independent) send humans into space. Then Shenzhou 6 and 7 completed (9)____ second manned orbit and the first Chinese spacewalk. In spite of the difficulties, scientists hope future (10)__________ (discovery) will not only enable us to understand the universe but also help us survive well into the future.Answers: 1. travelling 2. with 3. to explore 4. was launched 5. Although6. disappointed 7. carrying 8. independently 9. a 10. discoveriesStep 6 Post reading---Critical thinkingQ1: What do you think of the space exploration ? I think it is beneficial to us. Through further study of space, people will make full use of it in the future, such as the space experiments by Wang Yaping in Tian Gong 1.Q2: If you are determined to be an astronaut, what should you prepare at present ?First of all, I should study hard to get a related college degree. Besides, I must keep mental and physical healthy.Step 7. HomeworkTry to summarize the structure of the article by a mind map.

  • 新人教版高中英語必修3Unit 4 Space Exploration-Reading For Writing教學設計一

    新人教版高中英語必修3Unit 4 Space Exploration-Reading For Writing教學設計一

    另一方面,其余的人反對這個計劃,因為它可能會導致一些不好的影響。7.I hold the belief that space exploration not only enable us to understand how the universe began but also help us survived well into the future.我堅信探索太空不僅能夠使我們了解宇宙的起源而且能夠幫助我們更好地走進未來。8.I think we should spend more time and money exploring space so as to provide new and better solutions to people's short­term and long­term problems.為了給人類的短期和長期問題提供更新和更好的解決方法,我認為我們應該花更多的時間和金錢來探索太空。9.From my point of view,it is wrong of young people to depend on their telephones too much,which may do harm to both their physical and mental health.在我看來,年輕人過度依賴手機是不對的,因為它們可能會對他們的身心健康都有害。最近你班同學就“人類是否應該進行宇宙探索”這個問題進行了激烈的討論。有人認為,探索宇宙不僅讓人類更好地了解宇宙的發(fā)展,還可以用來指導農業(yè)生產,以及把一些探索太空的高新技術用于現實生活;也有一些人認為探索太空花掉了大量的人力物力;影響了人們的生活水平。請你根據以下情況寫一篇報告并發(fā)表自己的觀點。注意:1.寫作內容應包括以上全部要點,可適當發(fā)揮,使上下文連貫;

  • 新人教版高中英語必修3Unit 5 the value of money-Reading For Writing教學設計一

    新人教版高中英語必修3Unit 5 the value of money-Reading For Writing教學設計一

    【參考范文】Narrator:(Henry is smiling as he leaves the restaurant. As he is walking down the street, he sees a sign for a place that cuts hair. He decides to get it cut. )H=Henry;B=Barber;R=rude manH:Good afternoon, I'd like to get a cut, if I may. (The barber looks at Henry's hair and continues cutting another man's hair. )Er, I'd really like a haircut. As you can see it's much too long. B:(in a rude manner) Yes, I can see that. Indeed, I can. H:Fine, well I'll have a seat then. (He sits in one of the barber's chairs. The barber turns to look at Henry. )B:It's quite expensive here, you know!Are you sure you can afford it?H:Yes. I think so. (In comes the rude man. )R:Hey you there. I need a haircut quickly. Can you do me straightaway?B:All right, then, get in the chair and I'll see what I can do. R:Thank you. (sits down in one of the barber's chairs)H:Excuse me, but I was here first. Aren't you going to do my hair first?B:This man's in a hurry. H:Well so am I!I insist that you cut my hair first. B:OK, but I'll have to be quick. This gentleman is waiting. H:Thank you. (They both become quiet. After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B:Why, Mr . . . (looks shocked)H:Adams. Henry Adams. I'm sorry, I don't have any change. R:You're that Mr Adams! Well,I'm glad I waited or I might never have known it was you. B:Why, Mr Adams, please don't worry!(wearing a big smile) Nothing to worry about!Nothing at all!Please come back any time, even if you only need too little hairs cut!It will be my honour to serve you!

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations-Reading for Writing教學設計一

    新人教版高中英語必修3Unit 1 Festivals and Celebrations-Reading for Writing教學設計一

    The topic of this part is “Write about your festival experience”.During the Listening and Speaking and Talking, students are just asked to say out their festival experiences such as the Spring Festival, Mid-autumn Day, but this part students will be asked to write down their own festival experiences. During the reading part, it introduces the Naadam Festival in Inner Mongolia Autonomous Region, which can give students a good example to imitate. Students not only learn the festival, but touch and feel the Inner Mongolian’s character, the spirit and cultural atmosphere, which can help students form the cultural awareness and learn to enjoy and value the diversity of Chinese culture.Concretely, the dairy tells the experience that the author spent the Naadam Festival in Inner Mongolia Autonomous Region with his/her friend. The structure is clear. In the opening paragraph, it introduces the topic of the Naadam Festival and the whole feeling. Then it introduces the items of the festival like the ceremony, wrestling and horse racing. Finally, it summarizes this experience. Because this part is a travel journal, we must guide students pay more attention to these details: 1. use the first person. 2. use the past tense to tell the past thing and use the present or future tense to describe the scenery. 3. use the timeline to tell the development. 4. be careful for the author’s psychology, emotion and feeling, etc.1. Read quickly to get main idea; read carefully to get the detailed information about Naadam Festival.2. Learn the structure of the reading article and language.3. Write an article about a festival experience4. Learn to use the psychology, emotions and feeling in the writing.1. Write an article about a festival experience.2. Use the structure of the reading article and language.

  • 北師大初中八年級數學下冊分式的有關概念教案

    北師大初中八年級數學下冊分式的有關概念教案

    解析:由分式有意義的條件得3x-1≠0,解得x≠13.則分式無意義的條件是x=13,故選C.方法總結:分式無意義的條件是分母等于0.【類型三】 分式值為0的條件若使分式x2-1x+1的值為零,則x的值為()A.-1 B.1或-1C.1 D.1和-1解析:由題意得x2-1=0且x+1≠0,解得x=1,故選C.方法總結:分式的值為零的條件:(1)分子為0;(2)分母不為0.這兩個條件缺一不可.三、板書設計1.分式的概念:一般地,如果A、B表示兩個整式,并且B中含有字母,那么式子AB叫做分式.2.分式AB有無意義的條件:當B≠0時,分式有意義;當B=0時,分式無意義.3.分式AB值為0的條件:當A=0,B≠0時,分式的值為0.本節(jié)采取的教學方法是引導學生獨立思考、小組合作,完成對分式概念及意義的自主探索.提出問題讓學生解決,問題由易到難,層層深入,既復習了舊知識又在類比過程中獲得了解決新知識的途徑.在這一環(huán)節(jié)提問應注意循序性,先易后難、由簡到繁、層層遞進,臺階式的提問使問題解決水到渠成.

  • 北師大初中八年級數學下冊分式方程的概念及列分式方程教案

    北師大初中八年級數學下冊分式方程的概念及列分式方程教案

    探究點二:列分式方程某工廠生產一種零件,計劃在20天內完成,若每天多生產4個,則15天完成且還多生產10個.設原計劃每天生產x個,根據題意可列分式方程為()A.20x+10x+4=15 B.20x-10x+4=15C.20x+10x-4=15 D.20x-10x-4=15解析:設原計劃每天生產x個,則實際每天生產(x+4)個,根據題意可得等量關系:(原計劃20天生產的零件個數+10個)÷實際每天生產的零件個數=15天,根據等量關系列出方程即可.設原計劃每天生產x個,則實際每天生產(x+4)個,根據題意得20x+10x+4=15.故選A.方法總結:此題主要考查了由實際問題抽象出分式方程,關鍵是正確理解題意,找出題目中的等量關系,列出方程.三、板書設計1.分式方程的概念2.列分式方程本課時的教學以學生自主探究為主,通過參與學習的過程,讓學生感受知識的形成與應用的價值,增強學習的自覺性,體驗類比學習思想的重要性,然后結合生活實際,發(fā)現數學知識在生活中的廣泛應用,感受數學之美.

  • 新人教版高中英語必修3Unit 2 Morals and Virtues-Reading and Thinking教學設計

    新人教版高中英語必修3Unit 2 Morals and Virtues-Reading and Thinking教學設計

    The topic of this part is “Learn to make choices in life”.The Listening & Speaking & Talking part aims at the moral dilemmas, and this part is about making choices in life. The heroin is Lin Qiaozhi, a famous medical scientist, made a great contribution to our country’s medical care. Most importantly, her life experience can inspire our students whether in studying or the development of career. she had moral dilemmas and life choices, which are similar to the students who will step into society. Besides, Lin has quite good virtues like kindness, self-improvement, insistence, job-loving , generosity and responsibility, which is worth being learned.Concretely, this article is a biography about Lin Qiaozhi. The article tells her whole life according the timeline, among which the life choices is emphasized. For example, whether married or chased her dream, returned home or stayed abroad, family or public, her choices all reflected her faith, spirit, responsibility and devotion.1. Fast reading to get the detailed information about Lin Qiaozhi; careful reading to do the deductive information.2. Learn the reading skills--deductive judgement according the context.3. Study the structure features and language features. 4. Communicate about Lin’s life choices and reflect their own life choices.1. Learn the reading skills--deductive judgement according the context.2. Study the structure features and language features.3. Communicate about Lin’s life choices and reflect their own life choices.Step 1 Lead in---Small talkWhat are some important life choices?Importance choices: university study, jobs and marriage partners. Because they can determine our future.

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