(3)一切從實(shí)際出發(fā)、實(shí)事求是在講授這部分內(nèi)容時(shí),同樣繼續(xù)利用長(zhǎng)城的例子來(lái)說(shuō)明,古人正是經(jīng)過(guò)實(shí)地的考察得出最佳的建造地點(diǎn)等,結(jié)合了當(dāng)?shù)禺?dāng)時(shí)的實(shí)際來(lái)建造長(zhǎng)城,引導(dǎo)學(xué)生得出從實(shí)際出發(fā),實(shí)事求是的結(jié)論。3、課程小結(jié):本節(jié)的所有內(nèi)容已經(jīng)講授完畢了,為了讓學(xué)生更好地鞏固本節(jié)課所學(xué)的知識(shí),我會(huì)利用板書(shū)為學(xué)生梳理本節(jié)的重點(diǎn)條框內(nèi)容。這樣能夠幫助學(xué)生理清思路明確各知識(shí)點(diǎn)的關(guān)系。4、作業(yè):我會(huì)要求同學(xué)在課后以某一個(gè)事例(如:一件事情、一棟建筑、一輛汽車等)為例,來(lái)寫出著個(gè)事例中體現(xiàn)我們今天所講課的內(nèi)容的知識(shí)點(diǎn)。七、說(shuō)教學(xué)理念我的教學(xué)理念是以傳統(tǒng)的教授法與范例教學(xué)法就相結(jié)合的教學(xué)方法為主,充分利用多媒體的教學(xué)手段,結(jié)合事例來(lái)講解知識(shí),在上課過(guò)程中充分調(diào)動(dòng)同學(xué)的積極性來(lái)講解知識(shí)。我的說(shuō)課完畢,不足之處望各位老師給予指正!
Textbook: Senior English for China (Book 4), by Liu Daoyi Time Allotment: 1 period (40 minutes)Date: March 20, 2014Teaching aids: blackboard, Multi-media, Power Point, chalk I. Text Analysis (教材分析)This unit is about body language, and the text selected in the reading part demonstrates the difference and similarity of body language in many parts of the world. Through learning this passage, students are required to raise their awareness of using body language in different parts of the world. As body language is closely related to our daily life, it is easy to arouse students’ interest in learning this text. Reading skills and speaking training are designed around the text.II. Teaching Objectives (教學(xué)目標(biāo))By the end of the lesson, students will be able to:1. Language Skill Objective(語(yǔ)言技能目標(biāo)): develop reading ability (skimming and scanning)as well as speaking ability.2. Cultural Knowledge Objective(文化知識(shí)目標(biāo)): know about the cultural differences of using body language.3. Affective Objective(情感目標(biāo)): increase students’ awareness of using body language correctly in different cultures. III.Teaching Focuses and Difficulties(教學(xué)重點(diǎn)和難點(diǎn))1. Teaching Focuses(教學(xué)重點(diǎn)): the difference and similarity of body language in many parts of the world.2. Teaching Difficulties(教學(xué)難點(diǎn)): develop students’ reading abilities of skimming and scanning and ask the students to show their opinions with fluent English.
一. 教材分析1. 本單元的中心話題是“計(jì)算機(jī)(Computers)”,內(nèi)容涉及計(jì)算機(jī)的發(fā)展歷史,計(jì)算機(jī)的應(yīng)用等。本節(jié)課是該單元的第一課時(shí),我將Warming up, Pre-reading and Comprehending這四部分整合為一節(jié)精讀課。其中。Reading部分是題為WHO AM I?的文章,以第一人稱的擬人手法介紹了計(jì)算機(jī)發(fā)長(zhǎng)演變的歷史和計(jì)算機(jī)在各個(gè)領(lǐng)域的應(yīng)用,其主旨是表達(dá)計(jì)算機(jī)的發(fā)展變化之快以及在生活中用途之廣。而Warming up部分以圖片的形式展現(xiàn)了計(jì)算機(jī)的發(fā)展歷程;Pre-reading中的問(wèn)題和排序分別是為了預(yù)測(cè)語(yǔ)篇的內(nèi)容和測(cè)試學(xué)生對(duì)計(jì)算機(jī)歷史了解的情況;Comprehending則通過(guò)各項(xiàng)練習(xí)訓(xùn)練學(xué)生的閱讀技能,從而加深對(duì)文章的理解??梢?jiàn)這幾部分是一個(gè)有機(jī)的整體。2. 教學(xué)目標(biāo):1) 語(yǔ)言目標(biāo):重點(diǎn)詞匯及短語(yǔ):abacus, calculate, calculator, PC, laptop, PDA, robot, analytical, technological, universal, mathematical, artificial, intelligent, network, explore, in common, as a result.重點(diǎn)句子:a. My real father was Alan Turing, who in 1963 wrote a book to describe how computers could be made to work, and build a “universal machine” to solve any mathematical problem.
Then I would ask them to think of a funny English or Chinese and tell it to partners. While telling stories, they can use expressions and some acting to help make the story funny. 5 minutes would be given to do this.Those stories they told there will be the material for their writing. Soletting them tell it at first is helpful. And they can make a difference between telling a funny story and writing it down. Generally speaking, it is difficult forstudents to write well because they don’t know what to write and how to write. Asking them to tell their own stories at first can help them come up with what to write.After their telling, I would invite someone to share his/her story with all of us and I would write it down on the blackboard.This example story would be used as a sample to illustrate the format of funny story. Different from a story from teacher or textbook, a story from students can obviously become a interesting material to draw students’ attention.Then I would ask the whole class to put this story into several parts. It might be a little bit difficult for them. So I would ask them to find out whether all the sentences are necessary. After delete some sentences, there are 6 sentences left behind. Then they can easily put them into three parts. After interaction with students, I would teach them the right terms for each part and conclude the format of funny story.This step is the key and difficult point in my lesson. So I mainly usetask-based teaching method in this part and the task for students was divided into several stages. With the separated difficult level, students can find there are usually three parts in writing. They can also learn to write without the unnecessary parts in the process of analyzing. And then I wouldn’t rush to tell them the right terms to them directly. Instead, I would ask them to name them by their own. A confused mind is better for acquiring knowledge.While-writing:Then I would give students 7 minutes to write down this story, without other requirements.With all the preparations in pre-writing, students’ difficulties were cleared. So it would be much easier for them to write down the story within 7 minutes. There are no other requirements because students’ first writing is actually a drafting. It would be revise and edit several times later. Writing, as a skill
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.
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.
在接下來(lái)的細(xì)讀環(huán)節(jié),我套用了高考對(duì)閱讀理解的考查方式設(shè)置了5個(gè)問(wèn)題,分別為三個(gè)推理判斷題,一個(gè)細(xì)節(jié)題和一個(gè)主旨大意題。學(xué)生需要對(duì)文章的內(nèi)容進(jìn)行分析、歸納、推理、猜測(cè)等高級(jí)思維活動(dòng)才能做出正確的回答?!驹O(shè)計(jì)意圖】這一過(guò)程是對(duì)學(xué)生進(jìn)行細(xì)讀的訓(xùn)練,培養(yǎng)學(xué)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(gè)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(diǎn)的關(guān)鍵。首先,讓學(xué)生思考劇本中人物看到百萬(wàn)英鎊前后的態(tài)度發(fā)生了怎樣的變化。其次,讓學(xué)生仔細(xì)閱讀文章,找出可以表現(xiàn)人物態(tài)度變化的具體的語(yǔ)言和動(dòng)作。最后,讓學(xué)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(xué)生思考。【設(shè)計(jì)意圖】通過(guò)一系列的活動(dòng)培養(yǎng)學(xué)生學(xué)習(xí)從人物的語(yǔ)言和動(dòng)作探究人物的心理,使學(xué)生進(jìn)一步體會(huì)戲劇語(yǔ)言的魅力,從而對(duì)文章背后所反映的社會(huì)問(wèn)題進(jìn)行思考,也為下一步的討論環(huán)節(jié)做好鋪墊。
通過(guò)寫文章梗概,培養(yǎng)學(xué)生綜合運(yùn)用語(yǔ)言的能力,學(xué)習(xí)用恰當(dāng)?shù)挠⒄Z(yǔ)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(lái)幫助學(xué)生整理語(yǔ)篇,從而來(lái)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(guò)程中,由易到難設(shè)計(jì)快速閱讀和精讀的問(wèn)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(wèn)題展開(kāi)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?
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.
“深入探究,把握主旨”這一步則是解決教學(xué)的重點(diǎn)難點(diǎn),這里涉及到課文的深層意蘊(yùn),學(xué)生理解有難度,教師在通過(guò)問(wèn)題引領(lǐng)學(xué)生探討的基礎(chǔ)上,還要適時(shí)啟發(fā)、點(diǎn)撥,因?yàn)榻虒W(xué)時(shí)間有限,讓學(xué)生漫無(wú)邊際的討論,可能難以完成預(yù)定的教學(xué)任務(wù),會(huì)使教學(xué)過(guò)程不完整。至于本文的寫作特點(diǎn)的教學(xué)視時(shí)間而定,有時(shí)間可以讓學(xué)生說(shuō)一說(shuō),沒(méi)有時(shí)間用小黑板出示一下,讓學(xué)生了解就行,如果時(shí)間不夠,甚至可以不講。第三階段是“延伸練習(xí),鞏固提高”。
(2).教學(xué)手段為了使我根據(jù)教材而設(shè)計(jì)的三個(gè)教學(xué)目標(biāo)以及重點(diǎn)難點(diǎn)得以的突出和突破,達(dá)到最大化的展示境界,同時(shí)也為了配合以上我選擇的四種教法得以完滿實(shí)現(xiàn),我決定采用“多媒體”教學(xué)手段進(jìn)行全程教學(xué)。利用電腦的信息容量大,操作簡(jiǎn)便等優(yōu)點(diǎn),形象生動(dòng)的直觀展示教學(xué)內(nèi)容,不但提高學(xué)習(xí)效率和質(zhì)量,而且容易激發(fā)學(xué)生的學(xué)習(xí)興趣和調(diào)動(dòng)學(xué)習(xí)的積極性。四、說(shuō)學(xué)法我為學(xué)生設(shè)計(jì)了三個(gè)學(xué)習(xí)方法:1.讓學(xué)生學(xué)會(huì)在探究中學(xué)。通過(guò)“對(duì)黑人嚴(yán)酷處境的探究”和對(duì)文中重點(diǎn)語(yǔ)句的探究,培養(yǎng)學(xué)生在探究中學(xué)習(xí)的能力。2.讓學(xué)生學(xué)會(huì)在讀中學(xué)。通過(guò)“誦讀法”指導(dǎo)學(xué)生在誦讀過(guò)程中感受演講詞內(nèi)在的魅力,學(xué)會(huì)在讀中學(xué)。3.讓學(xué)生學(xué)會(huì)在練習(xí)中學(xué)。通過(guò)“課外延伸練習(xí)法”,對(duì)所學(xué)的知識(shí)進(jìn)行運(yùn)用,培養(yǎng)學(xué)生的創(chuàng)新和自學(xué)能力。
一、說(shuō)教材1.教材分析《涉江采芙蓉》是新人教版必修二第二單元《古詩(shī)三首》中的一首。《古詩(shī)十九首》在中國(guó)古代詩(shī)歌的藝術(shù)手法上起著承前啟后的作用,在高中語(yǔ)文古詩(shī)教學(xué)中也起著承前啟后的作用。這首古體詩(shī)不論是藝術(shù)上,還是在思想上都已經(jīng)達(dá)到了十分純熟的境界。因此,它十分重要。2.說(shuō)學(xué)情這首詩(shī)歌在內(nèi)容上難度不大,可以做多角度解讀。新課程標(biāo)準(zhǔn)鼓勵(lì)學(xué)生作個(gè)性化解讀,我們可以引導(dǎo)學(xué)生就此作些探討。學(xué)生通過(guò)小學(xué)、初中的系統(tǒng)學(xué)習(xí)和本冊(cè)古詩(shī)部分的集中學(xué)習(xí),有了一定的古詩(shī)鑒賞能力,對(duì)源遠(yuǎn)流長(zhǎng)的中華文化也有了一些積淀,興趣漸濃,這是進(jìn)一步引導(dǎo)學(xué)生熱愛(ài)古代詩(shī)歌、學(xué)習(xí)古代詩(shī)歌的一個(gè)前提。3.教學(xué)目標(biāo)依據(jù)學(xué)生特點(diǎn),教材特色以及新課標(biāo)的要求,制定教學(xué)目標(biāo)如下:(用多媒體展示)1、了解關(guān)于《古詩(shī)十九首》的文學(xué)常識(shí);2、感受詩(shī)歌的思想內(nèi)涵;3、運(yùn)用想象描摹詩(shī)歌的藝術(shù)畫面。
(二)分析課文,理清思路第1、2段為第一部分,主要是敘事、寫景,先敘述集會(huì)的時(shí)間、地點(diǎn),然后渲染出蘭亭優(yōu)美的自然環(huán)境。在這里足以“游目騁懷”“極視聽(tīng)之娛”,可以自由地觀察、思考,滿足人們目視耳聞的需求。這里正是與會(huì)“暢敘幽情”、盡興盡歡的絕好處所。這些描寫都富有詩(shī)情畫意,作者的情感是輕松愉快的。第3、4段為第二部分,主要是抒情、議論,作者由美景妙時(shí)引發(fā)出樂(lè)與憂、生與死的感慨。他認(rèn)為人生的快樂(lè)是有極限的,待快樂(lè)得到滿足時(shí),就會(huì)感覺(jué)興味索然。往事轉(zhuǎn)眼間便成為歷史,人到了生命的盡頭就會(huì)死亡。作者由“一死生為虛誕,齊彭殤為妄作”的認(rèn)識(shí),產(chǎn)生了一種珍惜時(shí)間、眷戀生活、熱愛(ài)文明的思考。雖然文中的壽夭、生死不能自由決定,從而有些傷感,但作者仍然認(rèn)識(shí)到盛衰、生死是必然的。人生無(wú)常,時(shí)不我待,故著文留傳后世,以承襲前人,啟示來(lái)者。
[教學(xué)反思]人教版高中語(yǔ)文必修二第三單元安排了《蘭亭集序》《赤壁賦》《游褒禪山記》三篇古代山水游記散文,它們借游賞之事,探索生命的意義、治學(xué)的道理。師者,所以傳道、授業(yè)、解惑也。高中的教材選用的都是歷史經(jīng)典名篇,每一篇都閃爍著儒道釋等百家光輝的思想。編者要老師傳道的意圖很明顯。即非如此,看著這些影響歷代、影響世界的如日月之耀眼光華的偉大思想就躺在我們的教科書(shū)里,又如何能不講呢?所以,我將本課的教學(xué)重難點(diǎn)擬定為:幫助學(xué)生建立積極的生死觀,掌握多角度看問(wèn)題的正確的思想方法。當(dāng)然,也讓學(xué)生領(lǐng)會(huì)了融寫景、抒情、說(shuō)理于一爐的大家手法。整堂課各教學(xué)環(huán)節(jié),環(huán)環(huán)相扣,過(guò)渡自然,讀、思、議、寫訓(xùn)練到位,而且全部圍繞“生死觀”展開(kāi),如一篇形散神不散的散文。
學(xué)法指導(dǎo):高一學(xué)生對(duì)文言文閱讀已具備了一些基礎(chǔ)知識(shí)和積累,但對(duì)如何學(xué)習(xí)文言文,還是一個(gè)新課題,因此教師應(yīng)引導(dǎo)學(xué)生掌握學(xué)習(xí)方法,運(yùn)用已有的知識(shí)框架同化新信息,建立新的智能,逐步走向獨(dú)立學(xué)習(xí)的境界。一、引導(dǎo)學(xué)生利用課文注釋,使用工具書(shū)自己翻譯,必要時(shí)教師進(jìn)行點(diǎn)撥、解難,培養(yǎng)自學(xué)能力。二、告訴學(xué)生翻譯文言文要遵循的原則。三、調(diào)動(dòng)學(xué)生思考、討論、交流的積極性,教師適時(shí)點(diǎn)撥,培養(yǎng)學(xué)生發(fā)現(xiàn)問(wèn)題、解決問(wèn)題的能力。四、提示學(xué)生反復(fù)誦讀課文,體會(huì)文章所闡述的道理。五、鼓勵(lì)學(xué)生及時(shí)歸納學(xué)習(xí)文言文的方法,注意積累文言文知識(shí)。教學(xué)程序:教學(xué)本課可安排2課時(shí)。第一課時(shí):1、導(dǎo)入新課:首先給學(xué)生介紹毛澤東的七絕詩(shī)《為李進(jìn)同志題所攝廬山仙人洞照》:“暮色蒼??磩潘?,亂云飛渡仍從容。天生一個(gè)仙人洞,無(wú)限風(fēng)光在險(xiǎn)峰?!睂W(xué)生通過(guò)誦讀領(lǐng)會(huì)了“無(wú)限風(fēng)光在險(xiǎn)峰”一句的含義。隨后因勢(shì)利導(dǎo),引出課題,指出今天我們要學(xué)習(xí)的王安石的《游褒禪山記》,就含有類似的深邃哲理。
(有的恒星旋轉(zhuǎn)平穩(wěn)均衡,有些恒星是因快速旋轉(zhuǎn)而變了形。作者以擬人的手法,生動(dòng)形象地描述,仿佛向我們展示了不同恒星的性情:有的穩(wěn)重沉靜,有的急切躁動(dòng)。讀來(lái)生動(dòng)有趣,妙趣橫生。)(3)我們探索宇宙的時(shí)候,既要勇于懷疑,又要富于想象。想象經(jīng)常能夠把我們帶領(lǐng)到嶄新的世界,沒(méi)有想象,我們就處處碰壁。懷疑可以使我們擺脫幻想,還可以檢驗(yàn)我們的推測(cè)。(對(duì)于未知領(lǐng)域的探索是需要懷疑和想象的,想象是科學(xué)的翅膀,敢于想象,并不斷地探索驗(yàn)證,所謂“大膽假設(shè),小心求證”懷疑否定舊知,產(chǎn)生新知。作者以簡(jiǎn)潔的語(yǔ)言闡述了想象和懷疑看似矛盾的兩者在宇宙探索中的相輔相成,和諧統(tǒng)一。作者不囿于介紹宇宙知識(shí),還發(fā)表自己的見(jiàn)解。)(4)我認(rèn)為宇宙里很可能到處都充滿著生命,只是我們?nèi)祟惿形窗l(fā)現(xiàn)而已。我們的探索才剛剛開(kāi)始。
設(shè)問(wèn):DNA復(fù)制后兩個(gè)子代DNA分子與親代DNA分子是否完全相同?為什么?通過(guò)設(shè)問(wèn),讓學(xué)生進(jìn)一步理解和鞏固DNA復(fù)制的全過(guò)程。接下來(lái)讓學(xué)生總結(jié)出DNA復(fù)制的四大基本條件:① 模板:開(kāi)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(guò)水解ATP提供;④ 酶:酶是指一個(gè)酶系統(tǒng),不僅僅是指一種解旋酶。最后通過(guò)以上分析,總結(jié)出DNA復(fù)制的意義以及在生活中的應(yīng)用:意義:DNA通過(guò)復(fù)制,使遺傳信息從親代傳給子代,從而保證了物種的相對(duì)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(yīng)用:目前DNA分子廣泛應(yīng)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(chǎng)留下的毛發(fā)、血等進(jìn)行分析作為破案的證據(jù),與DNA有關(guān)。五、設(shè)計(jì)課堂練習(xí):設(shè)計(jì)一題典型課堂練習(xí):即有關(guān)半保留復(fù)制及計(jì)算的習(xí)題:
3、遺傳密碼的特點(diǎn) 連續(xù)性、簡(jiǎn)并性、通用性5、課堂練習(xí)6、作業(yè)布置假如,我們利用(ACU)n核苷酸長(zhǎng)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(yùn)用實(shí)驗(yàn)方法確證蘇氨酸的密碼子究竟是什么?七、教學(xué)反思1、教材中豐富的科學(xué)史料,是我們?cè)谡n堂上進(jìn)行探究性學(xué)習(xí)活動(dòng)的良好素材,教師要整理和運(yùn)用好。千萬(wàn)不要低估學(xué)生的思維能力,當(dāng)學(xué)生的思維能力被你想方設(shè)法激發(fā)出來(lái)的時(shí)候,你會(huì)發(fā)現(xiàn)他們的創(chuàng)造力是無(wú)窮的。2、探究性學(xué)習(xí)的目的并不僅僅是問(wèn)題的解決,更重要的是在探究過(guò)程中體驗(yàn)和獲取科學(xué)研究方法,培養(yǎng)合作與分享的精神以及實(shí)事求是的科學(xué)態(tài)度,鍛煉思維能力,提高科學(xué)素養(yǎng)。3、學(xué)生是學(xué)習(xí)的主體,教師是引導(dǎo)者。我們要采取措施讓學(xué)生積極主動(dòng)地參與到學(xué)習(xí)活動(dòng)中來(lái),通過(guò)他們的思考、討論、爭(zhēng)辯、合作等活動(dòng)來(lái)獲取方法,建構(gòu)知識(shí)。
環(huán)節(jié)四 課堂小結(jié) 鞏固知識(shí)本節(jié)課我采用線索性的板書(shū),整個(gè)知識(shí)結(jié)構(gòu)一目了然,為了充分發(fā)揮學(xué)生在課堂的主體地位,我將課堂小結(jié)交由學(xué)生完成,請(qǐng)學(xué)生根據(jù)課堂學(xué)習(xí)的內(nèi)容,結(jié)合我的板書(shū)設(shè)計(jì)來(lái)進(jìn)行小結(jié),以此來(lái)幫助教師在第一時(shí)間掌握學(xué)生學(xué)習(xí)信息的反饋,同時(shí)培養(yǎng)學(xué)生歸納分析能力、概括能力。環(huán)節(jié)五 情景回歸,情感升華我的實(shí)習(xí)指導(dǎo)老師告訴過(guò)我們,政治這一門學(xué)科要從生活中來(lái)到生活去,所以在課堂的最后讓學(xué)生考察自己所在社區(qū)存在的問(wèn)題,然后制定監(jiān)督方案,以此培養(yǎng)學(xué)生對(duì)理論的實(shí)際運(yùn)用能力,同時(shí)檢驗(yàn)他們對(duì)知識(shí)的真正掌握情況,以此達(dá)到情感的升華,本節(jié)課,我根據(jù)建構(gòu)主義理論,強(qiáng)調(diào)學(xué)生是學(xué)習(xí)的中心,學(xué)生是知識(shí)意義的主動(dòng)建構(gòu)者,是信息加工的主體,要強(qiáng)調(diào)學(xué)生在課堂中的參與性、以及探究性,不僅讓他們懂得知識(shí),更讓他們相信知識(shí),并且將知識(shí)融入到實(shí)踐當(dāng)中去,最終達(dá)到知、情、意、行的統(tǒng)一。
(2)世界觀,人生觀,價(jià)值觀是人們文化素養(yǎng)的核心和標(biāo)志。一旦形成就會(huì)對(duì)人產(chǎn)生深遠(yuǎn)持久的影響。(但隨著生活閱歷的變化,人們文化素養(yǎng)的提高,人們的“三觀”會(huì)發(fā)生變化。)總之“潛移默化”指每時(shí)每刻,不知不覺(jué);是從文化對(duì)人影響的過(guò)程來(lái)看的?!吧钸h(yuǎn)持久”指經(jīng)年累月,難以抹去;是從文化對(duì)人影響的結(jié)果上說(shuō)的。3.課堂總結(jié):首先啟動(dòng)學(xué)生思維,教會(huì)學(xué)生把握知識(shí)主線,建構(gòu)知識(shí)體系,先由學(xué)生進(jìn)行總結(jié),然后教師進(jìn)行必要的補(bǔ)充4、布置作業(yè):布置作業(yè)。運(yùn)用文化對(duì)人的影響的知識(shí)分析“近朱者赤,近墨者黑”,并且應(yīng)該如何處理朋友之間的關(guān)系。設(shè)計(jì)這個(gè)作業(yè)的意圖是既讓學(xué)生靈活運(yùn)用所學(xué)知識(shí),同時(shí)又讓學(xué)生回歸生活,如何處理朋友之間的關(guān)系。5、板書(shū)設(shè)計(jì)遵循板書(shū)設(shè)計(jì)的實(shí)用性、直觀性的原則,根據(jù)本課的教材特點(diǎn),我采用結(jié)構(gòu)式板書(shū),這樣設(shè)計(jì)比較直觀、系統(tǒng),以便于學(xué)生能夠系統(tǒng)把握和理解知識(shí)。
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