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新人教版高中英語必修2Unit 2 Wildlife ProtectionReading for Writing教案二

  • 人教版高中英語必修5Life in the Future說課稿5篇

    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

    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.

  • 人教版高中英語必修1Journey Down the Mekong說課稿

    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.(說板書設計)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1Anne's best friend說課稿

    人教版高中英語必修1Anne's best friend說課稿

    Step 7 Language points 1.Vocabulary (1) go through (2) set down (3) a series of (4) on purpose (5) in order to (6)at dusk (7)entirely (8)face to face 2.Important sentences (1)…I’ve grown so crazy about everything to do with nature. (2)There was a time when … (3)I stayed awake on purpose until … (4)It was the first time … that I’d seen the night … (5)It’s no pleasure looking through … Purpose: 1.Master the required vocabulary and sentence structures. 2.Use them freely. Step 8 Consolidation 1.Find out the topic sentences 2.Retell the text according to the topic sentences Purpose: I want to know if my students understand the text. Step 9 Discussion Imagine you have to go into hiding like Anne and her family, what would you miss most? Giveyour reasons. Purpose: Train Ss’ oral English ability. Step 10 Homework Write an article on Friends. Purpose: 1. Improve the Ss’ writing ability. 2 Train the Ss’ ability of self—teaching and looking up information by themselves. Part 5 Blackboard design(說板書設計)Unit 1 Friendship Reading Anne’s Best Friend 1.Main idea of each paragraph: Para. 1 Anne made her diary her best friend. Para .2 Anne wrote her feelings in her diary. Para .3 Anne missed nature. Para.4 Anne saw the night face to face Para.5 Anne wanted to experience nature outdoors. 2.Listening: Exx.1 P3 3.Discussion: Exx.3 P3 Purpose: 1.Make Ss familiar with the passage 2.Make the design inductive, instructive and artistic.

  • 人教版高中英語必修1English around the world說課稿

    人教版高中英語必修1English around the world說課稿

    (3)v. 給:提出;展現(xiàn),顯現(xiàn)present sb. with sth. ; present sth. to sb. 把. . 交給;頒發(fā);授予present sth. (for sth. )/present sth. to sb. e. g. Om his birthday, his friends presented him a collection of stamps. 在他生日時,他的朋友們送給他一套郵票作為禮物。The sword was presented by the family to the museum. 這家人把寶劍捐贈給了博物館。The committee will present the final report to Parliament in June. 委員會將在六月向議會提交最后的報告。You need to present yourself better. 你需要更善于展現(xiàn)自己。It is essential that we present a united front. 至關(guān)重要的是我們要表現(xiàn)得更加團結(jié)。Step 4 ConsolidationT:Now that we have got a general idea of these words and phrases. Lets make up some sentences using them to master them. Suggested sentences:1. Your duties include typing letters and answering the telephone. 2. It is one of the greatest roles that she has played. 3. A large number of people have applied for the job. 4. The number of the panda is declining. 5. I'11 go there, even if I have to walk. 6. He came up to me to ask for a light. 7. The novel is about a family who can't communicate with each other. 8. He based his plan on interests of most people. 9. Why doesn't he make use of his singing talent?Step 5 Summary and homeworkT:Today we dealt with several new words and phrases. After class I hope that youcan read them again and again to keep them in mind. That's all for today. You aredismissed.

  • 人教版高中英語必修3Canada-the true north說課稿4篇

    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4Working The Land說課稿3篇

    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

    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?!驹O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(guān)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

    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5Making the news說課稿4篇

    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。這個單元的題目是Making the news。應該是學生比較感興趣的話題,學生往往對新聞工作充滿好奇,所以我們可以利用這個機會多設計一些師生互動和學生互動,來激發(fā)起學習的積極性,提高學習效率。同時我們可以利用這個單元不僅幫助學生掌握語言知識,培養(yǎng)語言能力,同時讓其了解新聞工作的重要性,培養(yǎng)起社會智能感。這個單元分為六個課時,它的教學目標是這樣的:語言目標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。 技能目標是能初步掌握約會的基本句型并在真實的場景下正確運用。新聞報道類文章的寫作技能。采訪的基本規(guī)范和溝通技能。情感目標是對新聞報道的客觀性和真實性有更好的理解。對新聞記者的職業(yè)有更深入的了解,并能體會其工作的重要性。下面我們來介紹一下第一課時的授課方式,第一課的教學目標是這樣的第一課時的教學目標語言目標:單詞:Occupation, journalist, editor, photographer, curious, personality, enthusiasm

  • 人教版高中政治必修2對人民負責說課稿

    人教版高中政治必修2對人民負責說課稿

    在學生活動的基礎(chǔ)上,教師總結(jié)歸納:要堅持從群眾中來到群眾中去的工作方法。要求:政府要通過各種途徑,利用各種群眾組織、社會團體廣泛收集群眾意見和建議,認真對待群眾的來信來訪。還要為群眾誠心誠意辦實事,盡心竭力解難事,堅持不懈。通過合作探究,以此來培養(yǎng)學生的分析能力,探究能力以及透過現(xiàn)象看本質(zhì)的能力,培養(yǎng)學生獲取信息的能力,自主學習的能力以及全面看問題的能力,再結(jié)合教師的講授,給學生一種茅塞頓開的感覺。環(huán)節(jié)四 回歸生活 提升情感我將引導學生閱讀課本,通過設置活動探究課,結(jié)合生活實際從時效,便利,實效等方面請學生評述公民求助或投訴的四種方式的特點和優(yōu)點。在這一過程中,我還會用多媒體展示常用的熱線電話,政府網(wǎng)站上有關(guān)信訪、政務公開及其他便民利民的欄目,豐富課堂資源。讓學生閱讀課本,自行歸納知識點,有助于培養(yǎng)學生自主學習能力。

  • 人教版高中生物必修2人類遺傳病說課稿

    人教版高中生物必修2人類遺傳病說課稿

    一、人類遺傳病1.概念2.分類(1)單基因遺傳病(2)多基因遺傳病(3)染色體異常遺傳?、僭颌陬愋?遺傳病的特點4.遺傳病對人類的危害八、說布置作業(yè)在作業(yè)的布置中,我嚴格遵循“重質(zhì)量、輕負擔”的指導思想。第一題主要是為了幫助學生及時糾正原有的對知識的錯誤理解或片面認識,培養(yǎng)學生的解題技巧和技能。所以我選用了該題。同時想借助該題培養(yǎng)學生對問題的科學的思維方法和探究的精神。幫助學生提高對信息技術(shù)運用的熟練程度,發(fā)展學生的信息素養(yǎng)。附作業(yè):1、連線題,請同學們連線指出下列遺傳各屬于何種類型?(1)苯丙酮尿病 A、單基因遺傳?。?)21三體綜合征(3)抗維生素D佝僂病 B、多基因遺傳?。?)軟骨發(fā)育不全(5)青少年型糖尿病 C、常染色體病2、以生物小組為單位進行人類遺傳病的調(diào)查。

  • 人教版高中歷史必修2大眾傳媒的變遷說課稿

    人教版高中歷史必修2大眾傳媒的變遷說課稿

    教學內(nèi)容與分析本課內(nèi)容是大眾傳媒的變遷,首先解題,了解什么是大眾傳媒。大眾傳媒就是傳播大眾信息的媒體,進入近代社會以來,人與人之間的聯(lián)系變得越來越密切,社會化程度大大加深,需要有一種大眾化、傳播速度快、傳播范圍廣的媒介作為人與人之間進行信息溝通的渠道,人類社會的傳媒手段應運而生,可由學生總結(jié)出有哪些主要的方式。報刊、影視、廣播,這三種大眾傳播媒體的依次出現(xiàn),給人們的生活方式帶來了巨大的變化,被稱為三大媒介。由于互聯(lián)網(wǎng)同報紙、廣播和電視三大媒介一樣,具有傳播信息的功能,所以被稱為“第四媒介”,即“網(wǎng)絡媒介”。通過本節(jié)課的學習使學生了解中國近代社會生活的變化,體會歷史和時代發(fā)展的必然性,能夠站在發(fā)展的角度、用歷史的眼光思考問題。

  • 人教版高中歷史必修1辛亥革命說課稿2篇

    人教版高中歷史必修1辛亥革命說課稿2篇

    三、辛亥革命的結(jié)局1.袁世凱竊取革命果實由課件給出竊取革命果實的簡單過程,幫學生理清思路,創(chuàng)設問題情境,由學生分析革命果實被竊取的原因,教師給以補充并揭示根本原因,貫穿整個革命的資產(chǎn)階級的軟弱性和妥協(xié)性,再次加深對難點的理解。2.歷史功績辛亥革命性質(zhì)、功績由學生閱讀書本進行總結(jié),再加以補充讓學生在書本上做好記錄,強調(diào)最大功績是結(jié)束了兩千多年的君主專制政體。辛亥革命的失敗及其評價很易搞成生硬的一言堂形式,可以從多種角度把學生思維調(diào)動起來。這里采用列舉一個合作探究,自由討論的題目“有人認為辛亥革命因為沒有完成反帝反封建的革命任務而失敗,有人則認為辛亥革命是中國“從君主到民主”社會轉(zhuǎn)型的成功開始。你同意哪種看法?”要求同學們自由討論.各抒己見,大膽創(chuàng)新,言之在理即可.教師在一旁引導學生,活躍課堂氣氛.最后教者歸納總結(jié)學習歷史從不同的角度看問題可以得出不同的結(jié)論,學會用辯證的觀點看待歷史問題,對辛亥革命有個全面的認識。

  • 人教版高中歷史必修1鴉片戰(zhàn)爭說課稿2篇

    人教版高中歷史必修1鴉片戰(zhàn)爭說課稿2篇

    “第二次鴉片戰(zhàn)爭”爆發(fā)的原因的講析,可通過出示英國在鴉片戰(zhàn)爭后在中國與洪都拉斯的正當貿(mào)易對比表,讓學生觀察和創(chuàng)設情景來得出結(jié)論。戰(zhàn)爭的經(jīng)過及影響,可以通過兩次鴉片戰(zhàn)爭形勢圖,以及一張相關(guān)的表格,從戰(zhàn)爭的根本目的、性質(zhì)、過程及影響等方面來比較兩次戰(zhàn)爭的異同,從而讓學生理解掌握“戰(zhàn)火再燃”其實就是中英鴉片戰(zhàn)爭的繼續(xù)和擴大。并理解“第二次鴉片戰(zhàn)爭”的如何使中國社會半殖民地半封建化的程度大大加深了。并突出英法兩國殖民者在占領(lǐng)北京期間所犯的滔天罪行。3、結(jié):結(jié)合板書設計,讓生自己總結(jié)這節(jié)課所學的內(nèi)容,并通過課后習題練于講相結(jié)合,來鞏固本課知識。在此基礎(chǔ)上對本課線索及主要知識點進行簡要的梳理。4、課題延伸:教材后探究學習總結(jié)中的一段材料,即《英國駐華商務監(jiān)督義律致英國外交大臣巴麥尊的機密件》,讓學生究義律對中國發(fā)動鴉片戰(zhàn)爭原因的說辭來展開探討,啟發(fā)學生運用辨證唯物主義的基本觀點,澄清和批駁在在一問題上的一些錯誤和謬論,從而提高學生辨別是非的能力和批判的能力.

  • 人教版高中歷史必修2古代的經(jīng)濟政策說課稿

    人教版高中歷史必修2古代的經(jīng)濟政策說課稿

    3、清代的“閉關(guān)鎖國”政策:(1)原因:①根本原因:自給自足的封建自然經(jīng)濟;②客觀原因:西方殖民者向東方殖民擴張;③直接原因:對付東南沿海人民的抗清斗爭(2)內(nèi)容:嚴格限制對外貿(mào)易。但并不是禁絕海外貿(mào)易??滴跬砥?,禁止商人前往南洋貿(mào)易;乾隆時只開廣州一處通商,并設立政府特許的貿(mào)易機構(gòu)廣州“十三行”統(tǒng)一經(jīng)營管理對外貿(mào)易。(3)后果:①閉關(guān)鎖國政策妨礙了海外市場的開拓,抑制了資本的原始積累,從而阻礙了資本主義萌芽的發(fā)展。②閉關(guān)鎖國政策隔絕了中國與外界的聯(lián)系,從而阻斷了中國學習西方的先進科學技術(shù),阻礙了生產(chǎn)力發(fā)展,使中國落后于世界潮流。③“閉關(guān)鎖國”政策在一定程度上也保護了國家的安全。教師可以設置問題:17-18世紀中國顯露出哪些危機?

  • 人教版高中生物必修2伴性遺傳說課稿

    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行分析)歸納特點:歸納出色盲基因遺傳的特點并擴展到X染色體隱性遺傳的特點上。色盲基因遺傳(X隱性遺傳)的特點:(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。(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,對應的正常色覺基因則屬于X顯性基因,子代表現(xiàn)應如何?(女多于男)

  • 人教版高中生物必修2基因在染色體上說課稿

    人教版高中生物必修2基因在染色體上說課稿

    三、孟德爾遺傳規(guī)律的現(xiàn)代解釋①分離定律:在雜合體的細胞中,位于一對同源染色體上的等位基因,具有一定的獨立性;在減數(shù)分裂形成配子的過程中,等位基因隨同源染色體的分開而分離,獨立地隨配子遺傳給后代。②自由組合定律:位于非同源染色體上的非等位基因的分離或組合是互不干擾的;在減數(shù)分裂過程中,同源染色體的等位基因彼此分離的同時,非同源染色體上的非等位基因自由組合??偨Y(jié):再次強調(diào)孟德爾遺傳定律的現(xiàn)代解釋課堂練習:書本31頁6、教學反思:本節(jié)課設置了一系列問題情境,層層設問,在學生答問、質(zhì)疑、討論過程中讓學生建構(gòu)新概念和新的知識體系,并通過教師及時掌握反饋信息,適時點撥、調(diào)節(jié),讓學生在推理判斷中培養(yǎng)良好的思維習慣和對知識的遷移能力,而且通過留出一定的時間讓學生提問,體現(xiàn)了以學生為主體的思想。

  • 人教版高中生物必修2DNA的復制說課稿

    人教版高中生物必修2DNA的復制說課稿

    設問:DNA復制后兩個子代DNA分子與親代DNA分子是否完全相同?為什么?通過設問,讓學生進一步理解和鞏固DNA復制的全過程。接下來讓學生總結(jié)出DNA復制的四大基本條件:① 模板:開始解旋的DNA分子的兩條單鏈;② 原料:是游離在核液中的脫氧核苷酸;③ 能量:是通過水解ATP提供;④ 酶:酶是指一個酶系統(tǒng),不僅僅是指一種解旋酶。最后通過以上分析,總結(jié)出DNA復制的意義以及在生活中的應用:意義:DNA通過復制,使遺傳信息從親代傳給子代,從而保證了物種的相對穩(wěn)定性,保持了遺傳信息的連續(xù)性,使物種得以延續(xù)。應用:目前DNA分子廣泛應用于刑事案件偵破等方面:如:DNA分子是親子鑒定的主要證據(jù)之一。把案犯在現(xiàn)場留下的毛發(fā)、血等進行分析作為破案的證據(jù),與DNA有關(guān)。五、設計課堂練習:設計一題典型課堂練習:即有關(guān)半保留復制及計算的習題:

  • 人教版高中生物必修2遺傳密碼的破譯說課稿

    人教版高中生物必修2遺傳密碼的破譯說課稿

    3、遺傳密碼的特點 連續(xù)性、簡并性、通用性5、課堂練習6、作業(yè)布置假如,我們利用(ACU)n核苷酸長鏈合成了含有蘇氨酸的多肽,那么蘇氨酸可能的密碼子有哪些?如何運用實驗方法確證蘇氨酸的密碼子究竟是什么?七、教學反思1、教材中豐富的科學史料,是我們在課堂上進行探究性學習活動的良好素材,教師要整理和運用好。千萬不要低估學生的思維能力,當學生的思維能力被你想方設法激發(fā)出來的時候,你會發(fā)現(xiàn)他們的創(chuàng)造力是無窮的。2、探究性學習的目的并不僅僅是問題的解決,更重要的是在探究過程中體驗和獲取科學研究方法,培養(yǎng)合作與分享的精神以及實事求是的科學態(tài)度,鍛煉思維能力,提高科學素養(yǎng)。3、學生是學習的主體,教師是引導者。我們要采取措施讓學生積極主動地參與到學習活動中來,通過他們的思考、討論、爭辯、合作等活動來獲取方法,建構(gòu)知識。

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