
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

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(shè)計意圖】這一過程是對學(xué)生進行細(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。

一、說教材本節(jié)課選自于人教版語文必修二第二單元詩三首中的一首詩歌,它是陶淵明歸隱后的作品。寫的是田園之樂,實際表明的是作者不愿與世俗同流合污的心聲,甘愿守著自己的拙志回歸田園。學(xué)習(xí)該詩,有助于學(xué)生了解山水田園詩的特點,感受者作者不同流俗的高尚情操,同時可以培養(yǎng)學(xué)生初步的鑒賞古典詩歌的能力。

1)他們在初中的生物學(xué)學(xué)習(xí)中已具備了一定的關(guān)于光合作用的基礎(chǔ)知識,也做過“綠葉在光下制造淀粉”這個實驗。2)他們具備物質(zhì)轉(zhuǎn)變和能量變化等相關(guān)的化學(xué)知識。3)在前面的《降低化學(xué)反應(yīng)活化能的酶》一節(jié)的學(xué)習(xí)中已經(jīng)學(xué)習(xí)過簡單的對照實驗和相關(guān)的實驗設(shè)計原則,使本節(jié)課最后的實驗設(shè)計得以順利進行。4)他們具有一定的 分析問題的能力,實施問題探究教學(xué)是可行的。三、教法和學(xué)法根據(jù)上述對教材和學(xué)生的分析,本節(jié)采用以下教法和學(xué)法:1)實驗法:以實驗說明結(jié)論。生物學(xué)的教學(xué)就是實驗的教學(xué)過程,實驗的展示形式有學(xué)生分組實驗、老師示范實驗、動畫和圖片演示實驗等,讓實驗現(xiàn)象說明問題,而不是直接讓學(xué)生記住結(jié)論。2)問題探究教學(xué)發(fā):以問題引發(fā)興趣。整個教學(xué)過程要設(shè)置好問題,層層展開,層層遞進,讓新知識與舊知識融為一個整體,讓學(xué)生在步步上升中攀登到知識的頂峰。3)比較學(xué)習(xí)法,同時采用多媒體輔助教學(xué),解決光合作用抽象的過程。

一 減數(shù)分裂高一生物減數(shù)分裂說課稿各位評委、老師:大家好,我今天說課的題目是高中生物必修2第二章第一節(jié)〈〈減數(shù)分裂與受精作用〉〉第一部分減數(shù)分裂第一課時精子形成過程。接下來我就從以下幾個方面來說說這一節(jié)課。一、說教材1.教材地位和作用《減數(shù)分裂》這一部分內(nèi)容不僅是第二章的重點內(nèi)容,也是整本書的重點內(nèi)容之一。它以必修一學(xué)過的細(xì)胞學(xué)知識、染色體知識、有絲分裂知識和初中生殖種類知識為基礎(chǔ)。通過學(xué)習(xí),使學(xué)生全面認(rèn)識細(xì)胞分裂的種類、實質(zhì)和意義,為后面學(xué)習(xí)遺傳和變異,生物的進化奠定細(xì)胞學(xué)基礎(chǔ)。2.教學(xué)目標(biāo)(1)知識目標(biāo):掌握減數(shù)分裂的概念和精子的形成過程;理解減數(shù)分裂和受精作用的意義。(2)能力目標(biāo):通過觀察減數(shù)分裂過程中染色體的行為變化,培養(yǎng)學(xué)生識圖、繪圖能力以及比較分析和歸納總結(jié)的能力。

最后,教師對這節(jié)課學(xué)習(xí)的內(nèi)容做回顧總結(jié),并讓學(xué)生做幾道練習(xí)題鞏固一下新知識。依據(jù):本節(jié)課主要是通過學(xué)生對關(guān)中文化的了解來學(xué)習(xí)我國的傳統(tǒng)文化。所以我計劃通過3-5分鐘的設(shè)問導(dǎo)課讓學(xué)生把注意力轉(zhuǎn)變集中到課堂中,引導(dǎo)學(xué)生關(guān)注課堂。整體時間安排符合教育學(xué)中的最佳時間分配原理和反饋原理。這樣做也有利于優(yōu)化課堂結(jié)構(gòu)、提高教學(xué)效率、把主要時間留給學(xué)生,把主動權(quán)還給學(xué)生。針對高三年級學(xué)生的層次差異,我進行了分層設(shè)置,設(shè)置有基礎(chǔ)題和拔高題。這樣做既可以使學(xué)生掌握基礎(chǔ)知識,又可以使學(xué)有余力的學(xué)生有所提高,從而達到拔尖和“減負(fù)”的目的。板書設(shè)計板書就是微型教案,板書集中體現(xiàn)教學(xué)的三維目標(biāo)、重難點、教學(xué)過程,體現(xiàn)教學(xué)的特色與特性。

4.They were going to find someone to take part in their bet when they saw Henry walking on the street outside.[歸納]1.過去將來時的基本構(gòu)成和用法過去將來時由“would+動詞原形”構(gòu)成,主要表示從過去某一時間來看將要發(fā)生的動作(尤其用于賓語從句中),還可以表示過去的動作習(xí)慣或傾向。Jeff knew he would be tired the next day.He promised that he would not open the letter until 2 o'clock.She said that she wouldn't do that again.2.表示過去將來時的其他表達法(1)was/were going to+動詞原形:該結(jié)構(gòu)有兩個主要用法,一是表示過去的打算,二是表示在過去看來有跡象表明將要發(fā)生某事。I thought it was going to rain.(2)was/were to+動詞原形:主要表示過去按計劃或安排要做的事情。She said she was to get married next month.(3)was/were about to+動詞原形:表示在過去看來即將要發(fā)生的動作,由于本身已含有“即將”的意味,所以不再與表示具體的將來時間狀語連用。I was about to go to bed when the phone rang.(4)was/were+現(xiàn)在分詞:表示在過去看來即將發(fā)生的動作,通??捎糜谠摻Y(jié)構(gòu)中的動詞是come,go,leave,arrive,begin,start,stop,close,open,die,join,borrow,buy等瞬間動詞。Jack said he was leaving tomorrow.

知識目標(biāo)1.了解傳統(tǒng)工業(yè)區(qū)的分布、條件和工業(yè)部門。2.掌握傳統(tǒng)的魯爾工業(yè)區(qū)優(yōu)越的區(qū)位條件,了解它的衰落原因及其綜合整治途徑。能力目標(biāo)1.讀圖分析礦產(chǎn)資源與工業(yè)部門之間的聯(lián)系,培養(yǎng)學(xué)生的地理思維能力、綜合分析能力,明確工業(yè)生產(chǎn)也應(yīng)因地制宜。2.聯(lián)系實際,了解當(dāng)?shù)貍鹘y(tǒng)工業(yè)發(fā)展?fàn)顩r,為適應(yīng)當(dāng)今世界經(jīng)濟發(fā)展?fàn)顩r,應(yīng)有哪些改善措施,培養(yǎng)學(xué)生的創(chuàng)新能力。德育目標(biāo)1.通過了解魯爾區(qū)的發(fā)展變化,用發(fā)展的觀點看待傳統(tǒng)工業(yè)區(qū)的改造,適應(yīng)世界發(fā)展潮流。2.中國已經(jīng)“入世”,我們應(yīng)用辯證唯物主義觀點分析我國傳統(tǒng)工業(yè)今后遇到的機遇和挑戰(zhàn)。

為城市居民提供休養(yǎng)生息的場所,是城市最基本的功能區(qū).城市中最為廣泛的土地利用方式就是住宅用地.一般住宅區(qū)占據(jù)城市空間的40%—60%。(閱讀圖2.3)請同學(xué)講解高級住宅區(qū)與低級住宅區(qū)的差別(學(xué)生答)(教師總結(jié))(教師講解)另外還有行政區(qū)、文化區(qū)等。而在中小城市,這些部門占地面積很小,或者布局分散,形成不了相應(yīng)的功能 區(qū)。(教師提問)我們把城市功能區(qū)分了好幾種,比如說住宅區(qū),是不是土地都是被居住地占據(jù)呢?是不是就沒有其他的功能了呢?(學(xué)生回答)不是(教師總結(jié))不是的。我們說的住宅區(qū)只是在占地面積上,它是占絕大多數(shù),但還是有土地是被其它功能占據(jù)的,比如說住宅區(qū)里的商店、綠化等也要占據(jù)一定的土地, 只是占的比例比較小而已。下面請看書上的活動題。

指導(dǎo)學(xué)生閱讀圖3.8,讓同學(xué)們討論山西省三類工業(yè)發(fā)展變化的情況??梢钥闯?,采掘業(yè)占工業(yè)增加值的比重在1985~1995年間有所上升,但在1995~2000年下降,且下降速度很快。原料工業(yè)始終在增加,且有越來越快的趨勢。加工工業(yè)1985~1995年間比重下降,到2000年幾乎停滯不前。這說明山西省雖然實現(xiàn)了產(chǎn)業(yè)結(jié)構(gòu)的升級,但還是限于初級加工階段,工業(yè)發(fā)展水平還不高。山西省只是一個能源大省,并不是一個工業(yè)大省,更不是經(jīng)濟強省,山西省的改革還有很長的路要走。(參考資料)《急需調(diào)整產(chǎn)業(yè)結(jié)構(gòu)的山西經(jīng)濟》(山西日報1999年11月25日)山西能源的綜合利用是一個正在發(fā)展完善的過程,教學(xué)中教師可以結(jié)合目前存在的一些問題和困境展開討論,引導(dǎo)學(xué)生深入探究。(例如屢屢發(fā)生的礦難,以及背后隱藏的“官煤勾結(jié)”問題,這些都是目前各種媒體關(guān)注的焦點,相關(guān)的新聞報道,教師在課前應(yīng)該專門搜集一些,或者讓有條件上網(wǎng)的學(xué)生自己去搜集,使得課堂教學(xué)更加貼近現(xiàn)實生活。)

(設(shè)計意圖: 通過這兩個問題探究的形式可以了解學(xué)生對二、干旱為主的自然特征這一知識點的掌握情況,隨堂練習(xí)有利于鞏固強化學(xué)生的條例性知識。)三、荒漠化的成因1、自然因素:干旱、氣候異常2、人為因素:(是荒漠化發(fā)生、發(fā)展的決定因素)自然原因啟發(fā)學(xué)生利用已經(jīng)學(xué)過的知識(干旱為主的自然特征)和給出的PPT資料來進行分析。人為原因以其危害結(jié)果用圖表和圖片的形式展示,使學(xué)生認(rèn)識到人為因素是導(dǎo)致荒漠化最主要的因素。(設(shè)計意圖:通過分析自然因素提供學(xué)生分析一區(qū)域環(huán)境建設(shè)的自然基礎(chǔ)條件,而這也是較難的一點,再者,通過分析人為原因,是學(xué)生樹立區(qū)域生態(tài)環(huán)境保護意識。)四、布置作業(yè):書本課本20—22的活動—— 非洲薩赫勒地區(qū)荒漠化的自然、社會經(jīng)濟

二、相對論的創(chuàng)立【課件】展示下列材料艾伯特·愛因斯坦(1879——1955),1879年3月14日誕生在德國烏爾姆的一個猶太人家中。1894年舉家遷居意大利米蘭。1900年畢業(yè)于瑞士蘇黎世工業(yè)大學(xué)。愛因斯坦被認(rèn)為是最富于創(chuàng)造力的科學(xué)家,他不但創(chuàng)立了相對論,還提出了光量子的概念,得出了光電效應(yīng)的基本定律,并揭示了光的波粒二重性本質(zhì),為量子力學(xué)的建立奠定基礎(chǔ)。為此榮獲1921年度的諾貝爾物理學(xué)獎。同時,他還證明了熱的分子運動論,提出了測定分子大小的新方法?!締栴}】19世紀(jì)末20世紀(jì)初愛因斯坦對物理學(xué)的貢獻是什么?意義是什么?為什么會出現(xiàn)?1、背景:經(jīng)典物理學(xué)的危機。19世紀(jì)末三大發(fā)現(xiàn):x射線、放射性和電子,經(jīng)典力學(xué)無法解釋研究中的新問題,如:黑體輻射、光電效應(yīng)等。2、相對論的提出及主要內(nèi)容:(1)“狹義相對論”和光速不變原理:1905年提出。

一、說教材1、本框的地位和作用本框題是人教版普通高中課程標(biāo)準(zhǔn)實驗教科書思想政治必修4《生活與哲學(xué)》第三單元第九課第一個框題。從這一框開始學(xué)生學(xué)習(xí)唯物辯證法中最基本的概念——矛盾。世界是普遍聯(lián)系和變化發(fā)展的,聯(lián)系的根本內(nèi)容是矛盾,發(fā)展的根本動力也是矛盾。矛盾的觀點是唯物辯證法的根本觀點。矛盾規(guī)律即對立統(tǒng)一規(guī)律揭示了事物發(fā)展的源泉和動力。矛盾分析法是我們認(rèn)識世界和改造世界的根本方法。因而本框題起著承上啟下的作用。2、教學(xué)目標(biāo)知識與技能:識記:矛盾、矛盾同一性、斗爭性的含義;矛盾普遍性、特殊性的含義。理解:矛盾同一性與斗爭性的辯證關(guān)系;矛盾普遍性和特殊性的辯證關(guān)系及其重要意義。運用:聯(lián)系實例,分析矛盾含義和矛盾普遍性含義;聯(lián)系生活實例,分析矛盾特殊性含義。

《矛盾是事物發(fā)展的源泉和動力》是人教版普通高中課程標(biāo)準(zhǔn)實驗教科書,《思想政治》必修第4冊,《生活與哲學(xué)》第3單元第9課的第1框的內(nèi)容。本節(jié)課的這部分內(nèi)容,是在學(xué)生們學(xué)習(xí)了上一框用發(fā)展練習(xí)的觀點看問題的基礎(chǔ)上展開的,本框通過矛盾同一性和斗爭性,普遍性與特殊性這兩大關(guān)系,揭示矛盾是事物發(fā)展的源泉和動力。矛盾是本書的一個重要觀點。對于學(xué)生樹立正確的人生觀以及下一階段的學(xué)習(xí)都用很重要的作用。二、說教學(xué)目標(biāo)(每個說1~2個)按照新課標(biāo)教學(xué)目標(biāo),結(jié)合著高二年級學(xué)生他們的認(rèn)知結(jié)構(gòu)及其心理特征,我制定了以下的教學(xué)目標(biāo):1、知識目標(biāo):通過學(xué)習(xí)掌握矛盾的含義。矛盾的同一性和斗爭性。矛盾的普遍性和特殊性。2、過程與方法的目標(biāo):使學(xué)生初步形成用矛盾的統(tǒng)一性和斗爭性相統(tǒng)一的觀點認(rèn)識和把握事物的能力,以及通過運用矛盾普遍性和特殊性辯證關(guān)系的原理認(rèn)識和解決問題的能力。

① 實驗設(shè)計將學(xué)生分組,利用桌上的器材進行探究(幻燈片展示)這個實驗難度較大,為了降低難度,為實驗探究鋪下第二臺階,要求學(xué)生先分小組討論以下問題(幻燈片展示)有些學(xué)生可能不知如何下手,我會要求學(xué)生先閱讀課本中的實驗描述從中得到一點提示,再讓一兩個小組同學(xué)回答,這樣既體現(xiàn)了學(xué)生學(xué)習(xí)的主體性又可提高學(xué)生自主思考和語言表達能力,之后我再進行補充完善(幻燈片展示答案),并用幻燈片把實驗步驟展示出來,在學(xué)生實驗過程一直保留,使學(xué)生能朝正確的方向進行猜想和操作,為實驗探究鋪下第三個臺階。② 實施探究在學(xué)生分組進行探究過程,教師巡視解惑,隨時觀察學(xué)生情況,解答學(xué)生提出的問題,還可用自言自語方式提示應(yīng)注意的一些問題,如儀器的正確使用,操作的規(guī)范等,幫助學(xué)生盡量在規(guī)定時間內(nèi)順利完成實驗。
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