(二)引入內(nèi)容1、播放幻燈片,從名言引出思考,什么是文化,如何理解文化?學(xué)生探究,既可質(zhì)疑,也可談自己對文化的理解2、幻燈片,以三組幻燈,分三個階段,學(xué)生分別通過小組討論的形式,歸納總結(jié)文化現(xiàn)象的三個特征3、根據(jù)對文化現(xiàn)象的認(rèn)識,歸納總結(jié)文化的內(nèi)涵及外延小活動:把不是文化的山、水、樹,由幾組同學(xué)畫出來,體會文化的含義4、一組判斷題,哪些是文化的,哪些不是5、理解文化的特點(diǎn)首先,根據(jù)前面,總結(jié)文化現(xiàn)象的特征,歸納出文化的普通性及特殊性其次,播放視頻,歸納總結(jié)文化是人類特有的現(xiàn)象第三,根據(jù)教材材料,小組探究總結(jié),文化是后天習(xí)得的第四,借助小活動的材料,歸納,文化需要一定的物質(zhì)載體6、文化的作用首先、觀看視頻,小組探究總結(jié),文化對于人的影響其次,觀看視頻,小組探究總結(jié),文化對社會的影響
3、文化的力量。為了使學(xué)生能辨證地分析文化的力量,我設(shè)計了兩個問題進(jìn)行探討:(1)是不是任何文化都能起促進(jìn)作用?(2)你在聽或唱國歌時感受到一種什么樣的力量?這樣,學(xué)生在對比中學(xué)會辨證地分析文化的力量——先進(jìn)的、健康的文化能促進(jìn)社會發(fā)展和個人成長;落后的、腐朽的文化則阻礙社會發(fā)展和個人成長。同時還能提高學(xué)生的文化賞析能力,從而引導(dǎo)學(xué)生裝自覺參加健康有益的文化活動,抵制不良文化的影響,投身到社會主義精神文明建設(shè)中去。關(guān)于課堂練習(xí),我準(zhǔn)備了5個針對性比較強(qiáng)的選擇題,從而加深鞏固本框題的重難點(diǎn)知識。最后,播放歌曲《走進(jìn)新時代》,展示本課知識結(jié)構(gòu),指出本框題需重點(diǎn)掌握的問題,結(jié)束本課教學(xué)。課后作業(yè),我設(shè)計了這樣一個辨析的題目:文化是人們創(chuàng)造的全部財富的總和,它是人類特有的現(xiàn)象。
一. 教材分析1. 本單元的中心話題是“計算機(jī)(Computers)”,內(nèi)容涉及計算機(jī)的發(fā)展歷史,計算機(jī)的應(yīng)用等。本節(jié)課是該單元的第一課時,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算機(jī)發(fā)長演變的歷史和計算機(jī)在各個領(lǐng)域的應(yīng)用,其主旨是表達(dá)計算機(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)了計算機(jī)的發(fā)展歷程;Pre-reading中的問題和排序分別是為了預(yù)測語篇的內(nèi)容和測試學(xué)生對計算機(jī)歷史了解的情況;Comprehending則通過各項(xiàng)練習(xí)訓(xùn)練學(xué)生的閱讀技能,從而加深對文章的理解??梢娺@幾部分是一個有機(jī)的整體。2. 教學(xué)目標(biāo):1) 語言目標(biāo):重點(diǎn)詞匯及短語: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.
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:
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
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.
Teaching plan for Unit 1 book3Good morning, teachers. It’s my great pleasure to be here because I can share my lesson with you and I can learn a lot from it. I’ll begin my lesson from the following four parts, the teaching material, the teaching methods, the studying methods and the teaching procedure.Firstly, let me talk about the teaching material. The content of my lesson is the reading passage festivals and celebrations of Unit 1 Festivals around the world. This passage is about festivals and celebrations. By studying this passage, we’ll enable the students to know that festivals exit everywhere, and many of festivals in different countries celebrate similar ideas. As we all know, the reading passage is the center of each unit. If the Ss can learn it well, it will be helpful to make the Ss learn the rest of this unit.After studying the teaching material, I think the teaching aims are as the followings:1. Knowledge aims:(1) The Ss can master the usage of the important words andexpressions.(2)The Ss can use the __________________ (grammar) in the proper situation.Make students know about the festivals all over the world and the detail of the festivals, such as origin, content, and the date of the holiday festivals.2. Ability aims:(1) Students can talk about festivals and celebrations in English(2) To improve the student’s reading ability, especially their skimming and scanning ability.3. Emotion aims:Make the Ss know about the foreign festivals, and respect other countries’ custom.Next, let’s come to the important points and the difficult points.The important point is how to make the Ss understand the text better and the difficult point is how can they talk about it. secondly, Teaching Methods:1. task-based Language Teaching2. Computer assisted language teaching.3. question-and–answer methodThirdly, Studying Methods:
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.
Language learning needs a context, which can help the learners to understand the language and then can product comprehensible output, so computer has the advantages to make the materials attractive.Part 3 Learning MethodsTask-based, self-dependent and cooperative learningPart 4 Teaching ProcedureStep One Lead-in“Interest is the best teacher.” Therefore, at the very beginning of the class, I should spark the students’ mind to focus on the centre topic “the band”. I’ll show some pictures of food to attract their attention and then bring some questions.Question:What kind of food they like?What should go into a good meal?The answers must relate to the diet. After this, the students will be eager to know something about a balance diet and this is the very time to naturally lead the class into Step 2Step 2 Reading for information: skimming and scanning In this step, I use Task-based Language Teaching method, which can give students a clear and specific purpose while skimming and scanning the context.Task 1 General ideaThe students will be asked to just glance at the title and the pictures of the passage, and then guess what they will read in the text. And they’ll be divided into groups of four to have a discussion.The purpose is to inspire the students to read actively, not passively. In addition, the task is to develop the students’ reading skill by making prediction and to encourage the students to express their thoughts in English and cooperate with each other.Task 2 Main idea of each paragraphCooperative learning can raise the students’ interest and create an atmosphere of achievement. Based on this theory, I divide the whole class into 4 groups to skim the whole text and get the main idea of each paragraph.
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.
在接下來的細(xì)讀環(huán)節(jié),我套用了高考對閱讀理解的考查方式設(shè)置了5個問題,分別為三個推理判斷題,一個細(xì)節(jié)題和一個主旨大意題。學(xué)生需要對文章的內(nèi)容進(jìn)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。【設(shè)計意圖】這一過程是對學(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)度變化的具體的語言和動作。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?!驹O(shè)計意圖】通過一系列的活動培養(yǎng)學(xué)生學(xué)習(xí)從人物的語言和動作探究人物的心理,使學(xué)生進(jìn)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(jìn)行思考,也為下一步的討論環(huán)節(jié)做好鋪墊。
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.
“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,教師在通過問題引領(lǐng)學(xué)生探討的基礎(chǔ)上,還要適時啟發(fā)、點(diǎn)撥,因?yàn)榻虒W(xué)時間有限,讓學(xué)生漫無邊際的討論,可能難以完成預(yù)定的教學(xué)任務(wù),會使教學(xué)過程不完整。至于本文的寫作特點(diǎn)的教學(xué)視時間而定,有時間可以讓學(xué)生說一說,沒有時間用小黑板出示一下,讓學(xué)生了解就行,如果時間不夠,甚至可以不講。第三階段是“延伸練習(xí),鞏固提高”。
一、說教材《短歌行》是普通高中課程標(biāo)準(zhǔn)實(shí)驗(yàn)教科書必修(二)第二單元的一篇略讀課文,本單元安排的是先秦到南北朝時期的詩歌。《短歌行》是著名政治家、軍事家、文學(xué)家曹操的作品。詩中抓住“憂”字來寫詩人為什么“憂”,如何解“憂”,從而表達(dá)希望能夠招攬人才、完成統(tǒng)一天下的雄心壯志。所以本單元安排《短歌行》一詩,對學(xué)生全面了解曹操,感受曹操在短暫的人生中竭力創(chuàng)造偉業(yè)的氣概。二、說學(xué)生我這一課的教學(xué)對象是高一學(xué)生。他們進(jìn)入高中學(xué)習(xí)的時間只有三個多月,現(xiàn)在已經(jīng)完成了必修(一)的學(xué)習(xí)。學(xué)習(xí)了現(xiàn)代詩歌單元,有了一定的詩歌學(xué)習(xí)基礎(chǔ),初步掌握了讀詩的基本方法,但是還未能形成成熟的穩(wěn)定的學(xué)習(xí)方式。同時,本單元學(xué)習(xí)是高中第一次接觸古代詩歌,詩歌語言上的障礙和時間上的跨度對他們來說都是學(xué)習(xí)上的困難。因此教師要引導(dǎo)學(xué)生自主學(xué)習(xí),合作學(xué)習(xí),為他們設(shè)置新的學(xué)習(xí)情境,提供合作探究的機(jī)會。
學(xué)法指導(dǎo):高一學(xué)生對文言文閱讀已具備了一些基礎(chǔ)知識和積累,但對如何學(xué)習(xí)文言文,還是一個新課題,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,使用工具書自己翻譯,必要時教師進(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)動學(xué)生思考、討論、交流的積極性,教師適時點(diǎn)撥,培養(yǎng)學(xué)生發(fā)現(xiàn)問題、解決問題的能力。四、提示學(xué)生反復(fù)誦讀課文,體會文章所闡述的道理。五、鼓勵學(xué)生及時歸納學(xué)習(xí)文言文的方法,注意積累文言文知識。教學(xué)程序:教學(xué)本課可安排2課時。第一課時:1、導(dǎo)入新課:首先給學(xué)生介紹毛澤東的七絕詩《為李進(jìn)同志題所攝廬山仙人洞照》:“暮色蒼??磩潘桑瑏y云飛渡仍從容。天生一個仙人洞,無限風(fēng)光在險峰?!睂W(xué)生通過誦讀領(lǐng)會了“無限風(fēng)光在險峰”一句的含義。隨后因勢利導(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。
各位評委老師,大家好。我說課的題目是《祝?!贰R?、說教材(一)教材所處的位置和地位高中語文新課程教材必修五本書,共有2個單元中外小說單元。一個必修3的第一單元,一個是必修5的第一單元,共六篇文章。(《林黛玉進(jìn)賈府》《祝?!贰独先伺c?!贰读纸填^風(fēng)雪山神廟》《裝在套子里的人》《邊城》)《祝福》是屬于前者。小說是擁有眾多讀者的一種文體,它可以多方面刻畫人物性格,描摹人物心理,完整地表現(xiàn)人物之間的沖突,還可以具體生動地再現(xiàn)人物生活的環(huán)境,因此在反映復(fù)雜的社會生活方面具有獨(dú)特優(yōu)勢。所以學(xué)習(xí)小說這種文學(xué)樣式,也是有助于學(xué)生學(xué)會鑒賞小說的基本方法,為將來的小說閱讀打下基礎(chǔ)。魯迅的《祝?!肥侵袊F(xiàn)代小說的精品,當(dāng)中的人物祥林嫂也是魯迅小說中與阿Q、孔乙己三個最為出名的人物之一。研讀好這篇文章,對將來小說的閱讀,小說中人物的理解,甚至小說的寫作都有深廣意義。
教材地位本課具有承上啟下的作用,前承文藝復(fù)興,后啟資產(chǎn)階級革命時代的到來,啟蒙運(yùn)動為資本主義社會構(gòu)建了一套政治藍(lán)圖,具有前瞻性,是近代第二次思想解放運(yùn)動。因此,本節(jié)內(nèi)容在整個教材中有著很重要的地位。教學(xué)目標(biāo)1、知識目標(biāo):(1)幫助學(xué)生了解啟蒙運(yùn)動的性質(zhì)、內(nèi)容和主要啟蒙 思想家及其主張。(2)理解啟蒙運(yùn)動興起的背景、影響。2、能力目標(biāo):(1)在討論和探究過程中訓(xùn)練學(xué)生的科學(xué)思維方法和自主學(xué)習(xí)的能力和掌握解題的方法。(2)通過指導(dǎo)學(xué)生閱讀啟蒙思想家的言論資料,培養(yǎng)學(xué)生對歷史資料的理解和歸納能力。3、情感價值目標(biāo):(1)培養(yǎng)人文意識,強(qiáng)化法治觀念。(2)培養(yǎng)學(xué)生的團(tuán)結(jié)協(xié)作精神和競爭意識。教學(xué)重點(diǎn)、難點(diǎn)(1)教學(xué)重點(diǎn):啟蒙思想家的主張及啟蒙運(yùn)動的影響。
1、教材的地位作用本課是新人教版普通高中歷史必修Ⅱ第六單元第18課的內(nèi)容,闡述羅斯福新政的背景、措施、影響。從單元知識安排看,本課與第17課《空前嚴(yán)重的資本主義世界經(jīng)濟(jì)危機(jī)》、19課《戰(zhàn)后資本主義的新變化》共同詮釋第六單元課題——《資本主義世界經(jīng)濟(jì)政策的調(diào)整》。說明了“資本主義經(jīng)濟(jì)理論和政策隨著資本主義發(fā)展而不斷調(diào)整的特點(diǎn)”,凸顯了“市場調(diào)節(jié)”和“國家干預(yù)”在經(jīng)濟(jì)發(fā)展中的重要性。從知識體系看,它是學(xué)生學(xué)習(xí)了第一次工業(yè)革命后自由資本主義、第二次工業(yè)革命后的壟斷資本主義等之后出現(xiàn)的,既是對上述知識的鞏固與綜合運(yùn)用,又為學(xué)生學(xué)習(xí)必修二的相關(guān)內(nèi)容打下基礎(chǔ),有承上啟下的作用。本課三個子目從邏輯上看又是遞進(jìn)關(guān)系。第一個子目“臨危受命”承上啟下,說明了羅斯福上臺的歷史背景具有臨危受命的特點(diǎn),第二個子目“實(shí)施新政”講述了羅斯福新政的主要內(nèi)容,第三個子目“擺托危機(jī)困境”主要講述了羅斯福新政的影響。
(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(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)
(二)組織學(xué)生探究知識并形成新的知識。我從學(xué)生的生活體驗(yàn)入手,運(yùn)用案例等形式創(chuàng)設(shè)情境呈現(xiàn)問題,使學(xué)生在自主探索、合作交流的過程中,發(fā)現(xiàn)問題、分析問題、解決問題,在問題的分析與解決中主動構(gòu)建知識。主要通過幾幅漫畫讓學(xué)生思考其中的哲學(xué)道理,開始接觸哲學(xué)。漫畫一:種瓜得瓜,種豆得豆,種雞蛋得??漫畫二:甲:下雨好極啦!乙:下雨糟透了!漫畫三:——狂妄之徒,你竟然壞了祖上規(guī)矩!在引導(dǎo)學(xué)生思考、體驗(yàn)問題的過程中,可以使學(xué)生逐步學(xué)會分析、解決問題的方法。這樣做既有利于發(fā)展學(xué)生的理解、分析、概括、想象等創(chuàng)新思維能力,又有利于學(xué)生表達(dá)、動手、協(xié)作等實(shí)踐能力的提高,促進(jìn)學(xué)生全面發(fā)展,力求實(shí)現(xiàn)教學(xué)過程與教學(xué)結(jié)果并重,知識與能力并重的目標(biāo)。