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人教版高中英語必修4Theme parks說課稿3篇
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.
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)計快速閱讀和精讀的問題，層層推進(jìn)各種閱讀活動，讓學(xué)生對閱讀內(nèi)容從整體感知到細(xì)節(jié)理解，最后深層讀懂整篇文章，同時加強(qiáng)閱讀策略的指導(dǎo)，讓每個學(xué)生都主動參與課堂教學(xué)活動，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4A taste of English Humor說課稿3篇
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
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3Healthy Eating說課稿4篇
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.
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(yīng)該是學(xué)生比較感興趣的話題，學(xué)生往往對新聞工作充滿好奇，所以我們可以利用這個機(jī)會多設(shè)計一些師生互動和學(xué)生互動，來激發(fā)起學(xué)習(xí)的積極性，提高學(xué)習(xí)效率。同時我們可以利用這個單元不僅幫助學(xué)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(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)是能初步掌握約會的基本句型并在真實的場景下正確運(yùn)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(biāo)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(xué)目標(biāo)是這樣的第一課時的教學(xué)目標(biāo)語言目標(biāo):單詞：Occupation, journalist, editor, photographer, curious, personality, enthusiasm
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.
新人教版高中英語必修3Unit 4 Space Exploration-Discovering Useful Structures導(dǎo)學(xué)案
【點(diǎn)津】 1.不定式的復(fù)合結(jié)構(gòu)作目的狀語 ,當(dāng)不定式或不定式短語有自己的執(zhí)行者時，要用不定式的復(fù)合結(jié)構(gòu)?即在不定式或不定式短語之前加 for ＋名詞或賓格代詞?作狀語。He opened the door for the children to come in. 他開門讓孩子們進(jìn)來。目的狀語從句與不定式的轉(zhuǎn)換 英語中的目的狀語從句，還可以變?yōu)椴欢ㄊ交虿欢ㄊ蕉陶Z作狀語，從而使句子在結(jié)構(gòu)上得以簡化?？煞譃閮煞N情況： 1?當(dāng)目的狀語從句中的主語與主句中的主語相同時，可以直接簡化為不定式或不定式短語作狀語。We'll start early in order that/so that we may arrive in time. →We'll start early in order to/so as to arrive in time. 2?當(dāng)目的狀語從句中的主語與主句中的主語不相同時，要用動詞不定式的復(fù)合結(jié)構(gòu)作狀語。I came early in order that you might read my report before the meeting. →I came early in order for you to read my report before the meeting.
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(diǎn)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(yán)格遵循“重質(zhì)量、輕負(fù)擔(dān)”的指導(dǎo)思想。第一題主要是為了幫助學(xué)生及時糾正原有的對知識的錯誤理解或片面認(rèn)識，培養(yǎng)學(xué)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(xué)生對問題的科學(xué)的思維方法和探究的精神。幫助學(xué)生提高對信息技術(shù)運(yùn)用的熟練程度，發(fā)展學(xué)生的信息素養(yǎng)。附作業(yè)：1、連線題，請同學(xué)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(jìn)行人類遺傳病的調(diào)查。
人教版新課標(biāo)高中物理必修1彈力說課稿3篇
基于以上分析，為使本堂課圍繞重點(diǎn)、突破難點(diǎn)，同時讓學(xué)生在課堂教學(xué)中能力得到提高，我設(shè)計如下教學(xué)過程。（一）創(chuàng)設(shè)情景認(rèn)識形變由同學(xué)們已有的形變知識入手，引入新課。教師演示：①彈簧的壓縮形變；②彈簧的拉伸形變③視頻播放：竹竿形變、鋼絲的扭轉(zhuǎn)形變。得出形變的概念及各類形變。[設(shè)計意圖：我從生活情景中引入新課，是為了激發(fā)學(xué)生的好奇心，為學(xué)生學(xué)習(xí)重點(diǎn)和難點(diǎn)內(nèi)容作鋪墊。]設(shè)問：摩天大樓在風(fēng)的吹拂下會不會擺動，發(fā)生形變嗎？演示微小形變放大實驗：由于這種形變不容易觀察，會使學(xué)生產(chǎn)生疑問：到底有沒有發(fā)生形變？解決的辦法是微小形變的演示實驗。為什么光點(diǎn)會往下移？讓學(xué)生帶著問題思考后得出結(jié)論：是由于桌面發(fā)生了形變，但是形變不明顯。為后面解決壓力和支持力都是彈力做好鋪墊。[設(shè)計意圖：使學(xué)生知道“放大”是一種科學(xué)探究的方法。]
人教版新課標(biāo)高中物理必修1摩擦力說課稿2篇
本節(jié)課是人教社物理必修1第三章第三節(jié)的內(nèi)容，編排在彈力之后。該節(jié)知識既是力學(xué)的基礎(chǔ)，也是組成整個高中物理知識的一塊“基石”，所以這節(jié)內(nèi)容的教學(xué)如何引領(lǐng)學(xué)生自主積極地探究摩擦力產(chǎn)生的條件和影響因素，體驗?zāi)Σ亮μ攸c(diǎn)規(guī)律的發(fā)生過程是本節(jié)課的重點(diǎn)，應(yīng)高度重視本節(jié)教學(xué)過程；由于摩擦力問題的復(fù)雜性，且在具體問題中又表現(xiàn)出“動中有靜，靜中有動”，尤其靜摩擦在許多情形下似乎又是“若有若無，方向不定”，因此，對于初學(xué)者也是有一定難度的。也正是由于教材內(nèi)容的上述特點(diǎn)，本節(jié)課又易于激起學(xué)生的求知欲，易于培養(yǎng)學(xué)生的辯證觀點(diǎn)，易于錘煉學(xué)生的物理素質(zhì)。要充分用好該節(jié)教材內(nèi)容，深入挖掘知識間的有機(jī)聯(lián)系，對學(xué)生開展針對性的思維訓(xùn)練，進(jìn)而提高學(xué)生應(yīng)用物理知識解決實際問題的能力和創(chuàng)新思維能力。高中物理《課標(biāo)》對該知識點(diǎn)的要求是，“通過實驗認(rèn)識滑動摩擦、靜摩擦的規(guī)律，能用動摩擦因數(shù)計算摩擦力”。其中，對靜摩擦力規(guī)律的認(rèn)識應(yīng)該包括最大靜摩擦力。
人教版新課標(biāo)高中物理必修2功率說課稿2篇
（一）、復(fù)習(xí)提問1、請說出功的計算公式及功的單位2、我們用哪個物理量表示物體運(yùn)動的快慢？（二）、創(chuàng)設(shè)情景，引入新課1、播放多媒體素材，用起重機(jī)和一個工人搬運(yùn)幾百塊磚比較哪一種方法好？圖中的情景說明了什么問題?（教師通過所設(shè)計的情景，將學(xué)生引入怎樣比較做功快慢，讓學(xué)生發(fā)表自己的看法，初步知道物體做功是有快慢之分的。）（三）、進(jìn)行新課1、比較做功快慢的方法播放多媒體素材并提出問題：怎樣比較兩個人誰做功快誰做功慢？教師啟發(fā)：以前學(xué)習(xí)過要比較兩物體運(yùn)動的快慢，可以先確定路程再比較時間，也可以先確定時間再比較路程。在路程和時間都不同時，通過計算速度比較兩物體運(yùn)動的快慢。同理，要比較物體做功的快慢可采用什么方法？
人教版新課標(biāo)高中物理必修2功說課稿2篇
探究一：高中階段功的含義是什么？投影：初中九年級《物理》105頁學(xué)生思考：①圖中物體的勢能、動能分別如何變化？②物體能量的變化和做功是否存在關(guān)系？學(xué)生:分組討論，得出結(jié)論：如果物體的能量發(fā)生變化時，說明有力對物體做了功。教師:進(jìn)行點(diǎn)評和小結(jié)(設(shè)計意圖：對初中知識深化理論認(rèn)識，并為以后功能關(guān)系的教學(xué)作準(zhǔn)備)探究二：力對物體做功的兩個要素是什么？情景再現(xiàn)：找體重相對懸殊的兩位同學(xué)，①A同學(xué)試圖抱起B(yǎng)同學(xué)，但沒成功。②B同學(xué)抱起A同學(xué)在教室內(nèi)勻速走動。學(xué)生思考：在①中，A是否對B做功？在②中，B是否對A做功？學(xué)生:分析得出做功的兩要素：物體受到力的作用，并且在力的方向上發(fā)生位移.教師:讓學(xué)生分別例舉生活中力對物體做功和不做功的例子，（設(shè)計意圖：讓學(xué)生親身參與課堂實驗，烘托課堂氣氛，相互協(xié)作增進(jìn)同學(xué)情誼）探究三：如果物體的位移不再力的方向上，那么力是否還對物體做功？
人教版新課標(biāo)高中物理必修2向心力說課稿3篇
通過這個示例呢，我們可以得到解決向心力問題的一般的步驟，確定對象，找出軌跡，找出圓心，然后進(jìn)行受力分析，讓同學(xué)們參考這樣的步驟，逐步的解決圓周運(yùn)動的問題，對于變速圓周運(yùn)動，我通過鏈球運(yùn)動進(jìn)行引入，這里是一個鏈球運(yùn)動的視頻，在同學(xué)們觀看視頻之前，我給同學(xué)們提出問題，鏈球收到繩子的拉力，做的是勻速圓周運(yùn)動嗎？ 然后再課堂上我們再做一個小實驗， 我們可以通過改變拉線的方式來調(diào)節(jié)小球的速度大小嗎？ 那么對小球，做加速圓周運(yùn)動，進(jìn)行受力分析，我們可以看到，小球做加速運(yùn)動時，他所受到的力，并不是嚴(yán)格通過軌跡的圓心，在進(jìn)行分析的時候，特別強(qiáng)調(diào)，小桶所受力的切線方向分力，和法線方向分力，切線方向分力，改變小球運(yùn)動速度大小，法線方向分力，改變了小球運(yùn)動的方向，法線方向的分力，在這里就是向心力，產(chǎn)生了向心加速度，通過這樣一個例子進(jìn)行分析，同學(xué)們是比較容易理解的，
人教版高中歷史必修2羅斯福新政說課稿2篇
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。
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: 細(xì)胞周期的概念（多媒體課件演示周期動畫）植物細(xì)胞有絲分裂（多媒體課件演示分裂各期動畫）動植物細(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1細(xì)胞分化說課稿
在講述細(xì)胞分化的意義時，也可以用實例來解決，工廠的生產(chǎn)車間里不同的工人干著不同的工作，一件產(chǎn)品的產(chǎn)出需要這些工人才能創(chuàng)造出來，一個生物體就像一個車間一樣，不同的細(xì)胞各司其職，相互合作。工人的分工是主管調(diào)解出來的，而不同細(xì)胞的出現(xiàn)就是細(xì)胞分化的結(jié)果，所以說，細(xì)胞的分化是生物體發(fā)育的基礎(chǔ)。在講到細(xì)胞全能性的時候，要多給學(xué)生舉些關(guān)于細(xì)胞全能性的例子，如植物組織培養(yǎng)、克隆技術(shù)等等，讓學(xué)生從實際的例子中真正的悟出細(xì)胞全能性的含義。此外，還要重視教材中的疑問，適當(dāng)對題目進(jìn)行引申,使它的作用更加突出，有利于學(xué)生對知識的串聯(lián)、積累、加工，從而達(dá)到舉一反三的效果。怎樣來解釋細(xì)胞的全能性呢？這主要以講授法來解釋了，細(xì)胞全能性的體現(xiàn)需要在組織或器官離體后才能體現(xiàn)出來，每個細(xì)胞都包含著生物體的全套遺傳基因，通過基因選擇性的表達(dá)，使離體的組織或器官通過分裂和分化逐漸發(fā)育成完整的植株。
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(xì)胞中，位于一對同源染色體上的等位基因，具有一定的獨(dú)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(dú)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。總結(jié)：再次強(qiáng)調(diào)孟德爾遺傳定律的現(xiàn)代解釋課堂練習(xí)：書本31頁6、教學(xué)反思：本節(jié)課設(shè)置了一系列問題情境，層層設(shè)問，在學(xué)生答問、質(zhì)疑、討論過程中讓學(xué)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(diǎn)撥、調(diào)節(jié)，讓學(xué)生在推理判斷中培養(yǎng)良好的思維習(xí)慣和對知識的遷移能力，而且通過留出一定的時間讓學(xué)生提問，體現(xiàn)了以學(xué)生為主體的思想。
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:對于一個生物體來說，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