解析:(1)根據(jù)AD∥BC可知∠ADC=∠ECF,再根據(jù)E是CD的中點可求出△ADE≌△FCE,根據(jù)全等三角形的性質(zhì)即可解答;(2)根據(jù)線段垂直平分線的性質(zhì)判斷出AB=BF即可解答.解:(1)∵AD∥BC,∴∠ADC=∠ECF.∵E是CD的中點,∴DE=EC.又∵∠AED=∠CEF,∴△ADE≌△FCE,∴FC=AD;(2)∵△ADE≌△FCE,∴AE=EF,AD=CF.又∵BE⊥AE,∴BE是線段AF的垂直平分線,∴AB=BF=BC+CF.∵AD=CF,∴AB=BC+AD.方法總結:此題主要考查線段的垂直平分線的性質(zhì)等幾何知識.線段垂直平分線上的點到線段兩個端點的距離相等,利用它可以證明線段相等.探究點二:線段垂直平分線的作圖如圖,某地由于居民增多,要在公路l邊增加一個公共汽車站,A,B是路邊兩個新建小區(qū),這個公共汽車站C建在什么位置,能使兩個小區(qū)到車站的路程一樣長(要求:尺規(guī)作圖,保留作圖痕跡,不寫畫法)?
3.作者是如何表達出自己的觀點的?明確:作者首先以瑰麗的語言盛贊圓明園在人類文明中的地位,其后,又以比喻及反諷的修辭,將英法聯(lián)軍劫掠圓明園的罪行揭露而出,兩者形成鮮明的對比,從而引出譴責英法聯(lián)軍遠征中國行為的觀點。目標導學三:了解作者心中的圓明園及英法聯(lián)軍的強盜行徑1.作者是如何描述他心目中的圓明園的?明確:圓明園是幻想的某種規(guī)模巨大的典范,一座言語無法形容的建筑,某種恍若月宮的建筑。作者用大理石,玉石,青銅,瓷器,雪松,寶石,綢緞,神殿,后宮,城樓,神像,異獸,琉璃,琺瑯,黃金,脂粉,一座座花園,一方方水池,一眼眼噴泉,成群的天鵝、朱鷺和孔雀等無數(shù)華貴的象征,鋪就了一張華貴的想象畫面,構成他心中的圓明園。正如他所說“總而言之,請你假設人類幻想的某種令人眼花繚亂的洞府,其外觀是神廟,是宮殿,那就是這座園林”。
一、導入新課我們已經(jīng)學過魯迅先生的不少文章,學過他的小說,看他用無數(shù)生動的形象表達他在時代里的“吶喊”與“彷徨”;學過他的散文,與他一同在失落中“朝花夕拾”,安靜地回憶過往。今天,我們將學習魯迅先生的一篇雜文,看他是如何作為民族斗士,將手中的筆,變成抨擊敵人的槍。二、教學新課目標導學一:學習駁論,理清思路1.初讀課文,找出對方的錯誤觀點,并說說作者是怎樣引出這一觀點的。明確:對方的錯誤觀點是“中國人失掉自信力了”。開篇以似乎確鑿的事實為據(jù),用一句話指出了三個階段中“中國人”表現(xiàn)出來的三種不同的態(tài)度:盲目驕傲,夜郎自大;盲目崇拜,借助外援;今不如昔,祈求鬼神。即由自夸到崇洋,到自欺欺人、虛無渺茫的態(tài)度變化。因此有人“慨嘆”:“中國人失掉自信力了?!边@是論敵的論點。
學生搜集中外重要節(jié)日及部分中外名人的生日所在的月份。教師準備相關節(jié)日及部分中外名人的圖片或音像資料片。教師課前準備Let’s find out2的配圖畫好春、夏、秋、冬四個方框。錄音:Listen and number。教學過程:Warm up (熱身)活動一復習單詞教學參考時間:3分鐘(1)教師播放Let’s chant部分的歌謠,學生聽一遍后跟唱。(2)出示帶有各個月份特征的單詞卡片。學生看圖說出單詞,并一起拼讀其縮寫形式。幫助學生在有節(jié)奏的說唱中鞏固記憶單詞,為在后面活動中學生能夠熟練應用作鋪墊。活動二 復習句子教學參考時間:5分鐘(1)師生同唱Let’s chant部分歌謠“When Is Your Birthday?”。(2)教師引導學生看歌謠下面的翻滾過山車的動畫,師生進行問答,如:When is the rabbit’s birthday? It’s in May. 等。教師示范后請學生進行Pair work,也可以展開競賽的形式進行“連鎖問答”。鞏固有關生日問答的語句,為Let’s find out1的活動做準備。
學生初步了解對話內(nèi)容,在描述中培養(yǎng)學生的語言運用能力。(2)教師讓學生自己閱讀本部分對話,不理解的生詞和句子可以和同學或老師共同商討。(3)教師幫助學生理解句子:“The weather report says it’s going to rain tomorrow. I can’t play football in the rain. I can’t go hiking, either. Let’s watch TV together.”出示圖片:1) 晴天,Zoom在踢足球,圖下顯示:today;2)天在下雨,Zoom和Zip在屋里看電視,圖下顯示:tomorrow。與學生展開對話T:What’s the weather like today? S:It’s fine/ sunny. T:What does the weather report say about tomorrow?S:It’s going to rain.T:The weather report says it’s going to rain tomorrow.(呈現(xiàn)句子)(學生重復句子The weather report says it’s going to rain tomorrow.,并說出意思。)T:Can you play football in the rain?S:No,I can’t.T:Can you go hiking ?S:No,I can’t.T:In the rain, we can’t play football. We can’t go hiking, either. (呈現(xiàn):either)學生跟讀either,感悟單詞的用法,教師講解意思:(不......),也不...啟發(fā)學生用either說兩句話:In the rain, I can’t ... I can’t ..., either,從而在應用中鞏固單詞的讀音和用法。
教學參考時間:5分鐘(1)教師課前在教室里藏好一些動物和人物的圖片。(2)給全班學生一分鐘時間尋找。(3)請找到圖片的學生根據(jù)圖片上的人物或動物正在做的動作表演對話。活動七:猜一猜教學參考時間:5分鐘(1)教師一只手拿一張圖片,另一只手用白紙遮住圖片,一邊慢慢抽動白紙,一邊問:What are the…s doing? 學生用They are…猜圖片中的內(nèi)容。(2)猜對的學生上臺主持游戲。(3)教師也可以在白紙上剪幾個圓洞蓋在圖片上,慢慢移動白紙的位置讓學生猜白紙下面圖片的內(nèi)容。(4)也可以分組利用詞卡做該游戲。4、Consolidation and extension (鞏固與擴展)活動八:練一練教學參考時間:5分鐘(1)活動手冊Ask and write. 讓學生看一看兩個表格,找規(guī)律做問答,然后再把表格中所缺單詞寫出來。(2)活動手冊Let’s find out.讓學生仔細觀察兩幅圖找出不同的地方,并用英語表達出來?;顒泳牛盒〗Y教學參考時間:1分鐘本課我們學習了如何詢問他、她、它們正在做什么What are they doing? 及回答:They are…5、板書
教學參考時間:2—3分鐘教師讓學生說出幾個家庭成員名稱,如:father, mother, sister, brother, uncle等,自己或讓學生把單詞寫在黑板的一側(cè),再讓學生說出幾個動詞短語的-ing形式,如:washing clothes, writing an e-mail, watching TV等,寫到黑板的另一側(cè)。學生在家庭成員名稱和動詞短語中分別選三至四個,自己編成一首歌謠。課后,可以讓學生將創(chuàng)作的歌謠進行展示或舉行歌謠朗讀比賽。5、Consolidation and extension (擴展活動)活動十:知識擴展教學參考時間:1—2 分鐘教師讓學生打開書第54頁Good to know 部分,了解主要國家的緊急救助電話。如:美國,英國,加拿大,澳大利亞等。教師還幫助學生了解我國的緊急救助電話號碼。教師可以利用道具電話讓學生做游戲?;顒邮唬壕氁痪毥虒W參考時間:2—3 分鐘做本單元B Let’s talk部分的活動手冊第37頁的配套練習。教師講解題目要求。教師播放錄音,做Listen and number 部分練習。要求按所聽內(nèi)容在圖上寫出序號。再次播放,讓學生按錄音內(nèi)容填空。鼓勵學生自己讀讀所寫句子。
(1)Have you ever been to …? Yes, I have. / Yes, I have ever been to …No, I haven’t. / No, I have never been to …(2)When did you go there? I went there last year. (3)I have never been to a water park. Neither have I. I have ever been to an amusement park. So have I. (4)How long have you been studying English? I’ve been studying English since nine o’clock. I’ve been studying English since I came back home. I’ve been studying English for five hours. (5)What’s that? It’s an amusement park in Japan. I’ve never been to an amusement park like it before. It’s fun to learn another language. Let’s go tonight. Isn’t this great?space museum, amusement park, water park, South America, Peru, Holland, European culture, tour guide, flight attendant, musical instrument, more than, be from, get to, take lessons, neither, discover, graduate, change
說明:在幫Li Lei提建議的同時,教育學生如何學好英語。第三課時教學目標1. 語言目標:a) 詞匯: Original, in style, haircut, the same as.b) 語言結構:My friend wears the same clothes and has the same haircut as I do.2. 能力目標:大多數(shù)學生能夠談論自己喜歡哪種服裝,提高查找信息的能力。3. 情感目標:學會如何與朋友相處,要有自己對時尚的看法。教學重點掌握一些重要詞匯。教學難點學會談論問題,并能提出書面建議。◆教學突破首先針對Erin的問題,提出個人的建議,模仿2c部分的對話展開雙人交際Pair-work;聽老師誦讀3a部分的信件,并找出LEFT OUT的問題所在;學生完成3b部分的內(nèi)容,給Left Out提出書面的建議;學以口頭形式提出自己目前存在的某個問題,講給大家聽,讓同學們給自己提出一個建議,并作筆錄;學生兩、三個人分成一組,隨意性地進行口語交際,談論P14的第4部分的某個問題,相互交換意見。
區(qū)分賓語從句、定于從句和狀語從句賓語從句和狀語從句,都叫做主從復合句。賓語從句主要是中考必考的,是初中階段必掌握的從句,賓語從句主要是掌握三要素,所謂賓語從句,就是賓語在主從復合句當中充當賓語的一個句子,叫做賓語從句。主句的謂語動詞是及物動詞,后面如果是詞或者是短語的話,是簡單句,如果是句子的話,肯定是賓語從句。I know that he good at English.就是賓語從句,三要素,一要素是要注意連詞,連詞一共學了三類連詞,一類連詞是that口語當中可以省略,就像剛才說的那一句,I hear he is good at English.還有疑問代詞、疑問副詞,how where when,疑問代詞、疑問副詞。還有一類連詞weather是否的意思,不是狀語從句當中的如果,這一定要和如果區(qū)分開,這是是否。I don't know if he interested at English。賓語從句要注意if是連詞。第二要素是語序,要用陳述舉語序。比如說你家有幾口人,我們都說How many people are there in you family?但是這是簡單句,一旦說成賓語從句,你可以告訴我你家有幾口人嗎?Could you tell me how many people there are in you family ?
"Hello! Welcome to English class! Introduce yourself. Meet your new classmates." That's what the teacher says. What do you say? "Oh no!" It can be difficult talking to new people. But it can be fun, and you can make friends. How do you do it? Make small talk. Small talk is polite conversation. "Wang Nan is a great pingpang player, isn't she?" "I'd love to meet her, wouldn't you?" "It's been raining a lot, hasn't it?" Tag questions are a form of polite speech. To make small talk successfully, you should know how to make them. You should also know what topics to talk about. Try to learn this unit carefully. The next time you're in English class, you'll find out. Making small talk's easy, isn't it? (“你好!歡迎你!請做一下自我介紹。認識一下你的新同學。”通常在課上老師會這樣說。你會說什么呢?“噢,不!”與陌生人談話太困難了。但是這也很有意思,并且你還能交到朋友。你該怎么做呢?閑聊。閑聊指得是禮貌的對話。“王楠是一個很棒的乒乓球運動員,不是嗎?”“我希望自己能認識她,你呢?“今年的雨水很多,不是嗎?”反意疑問句是一種禮貌用語。為了使得談話成功,你應該知道怎樣去進行閑聊。你還應該知道與不同的人該談論什么樣的話題。認真的學習這個單元吧,下次在英語課上,你會發(fā)現(xiàn)與大家展開談話是一件很容易的事情,不信我們來試試。)
This activity introduces some new vocabulary and provide oral practice using the target language.Task 1 . Ask four students to stand in front of the class, and the teacher asks them the following questions as a reporter.1.What are you going to do when you grow up?2.What are you going to do next week?3.What are going to do after school?The students will give different answers, then ask a good student to report what they said.I am going to e a doctor.What did she say?----------She said she was going to be a doctor.I am going to have a party on Friday night.What did he say?-------He said he was going to have a party on Friday night.I am going to do my homework.What did she say ?------ She said she was going to do her homework.I am going home after school.What did she say?-----She said she was going home after school.Say In this unit we are going to learn to use words like to report what someone said.Task 2. Read the instructions. Then ask a student to read the four questions. And write the words on the Bb. Explain what soap opera is.Task 3. Ask the students to Look at the pictures, point out the TV screens in the picture. Ask one girl to read what Marcia said.What did Marcia say? She said She said she was having a surprise party for Lana on Friday night. Repeat the other pictures in the same way.Activity3. Listen and number the pictures in activity 1a.
(一).知識方面: 1.培養(yǎng)學生能運用過去進行時來描述、談論過去某個時間正在發(fā)生的事情或動作的意識和能力,能就過去某個時間正在發(fā)生的動作做出正確的描述。 2.培養(yǎng)學生的想象力和角色扮演的合作能力。 3.培養(yǎng)學生講述過去發(fā)生的事情經(jīng)過的能力。能正確運用一般過去時來講述故事。 (二).技能方面: 1.本單元的語言目標是Talk about past events and tell a story(談論過去的時間和講述一個故事),圍繞這一目標,要涉及句型: What were you doing when the UFO arrived? ----I was sitting in the barber’s chair. The barber was cutting my hair. 因此必須學習standing、studying、cleaning、sleeping、cooking、making、eating、cutting、等表示地點的詞,以便為上述句型提供語言材料。2.學習過去進行時的有關知識。Was/were+現(xiàn)在分詞,是該時態(tài)的表達式。 3.在學習過程中,要區(qū)分The boy was walking down the street when the UFO landed.和While the boy was walking down the street, the UFO landed.這兩種由when和while引導的狀語從句的句型結構。注意它們的不同。
Step 4. Group work (4)1. Ask a pair of students to read the dialogue. Say, This activity provides speaking, listening and writing practice using the target language.2. Ask students to complete the work in groups.3. Check the answers with the whole class. 4. Explain some of the language points. Step 5. Word review (Self check 1)1. Ask students to read the words and the phrases given. 2. Fill in the blanks with proper forms of these words to complete the sentences. 3. Check the answers with the whole class. Homework:Do activity 2 on page 57 after class. Period 6Teaching aims: 1. Teach vocabulary words and the useful expressions. 2. Enable the students to learn etiquette in different culture. 3. Help the students learn how to behave politely in public places and in daily life. Teaching procedures:Step 1. RevisionHelp students to review the function of making requests through a free talk. Then lead them to the topic of etiquette. Explain the meaning of etiquette. Or, ask students to look it up in the dictionary. Step 2. Pre-reading (Section 1)1. Ask students to read the picture and make a list with their partner about how many rules of etiquette can be seen being broken.
Step Ⅱ Show the new words on the screen and teach the new words. Read the new words to students and ask them to repeat.Step Ⅲ 3aThis activity introduces new vocabulary and provides reading practice using the target language.In this activity first look at the four pictures.T: What can you see in the pictures?Ss: Four snow globes.T: Right. There are four snow globes in the pictures. And what are they?Ss: They are a monster, two polar bears, two penguins and a birthday cake.Write these words on the blackboard: snow globe; monster; polar bear; penguin and birthday cake. Read them to the class and ask students to repeat each one. Make sure students understand each word.Use a computer to show the E-mail message on the screen and read the message to students.Get students to read the e-mail on their own, and then draw lines connecting each snow globe and its description.Correct the answers.AnswersA line should connect each snow globe picture with the words that describe it in the letter.Step Ⅳ 3bThis activity provides writing practice using the target language.First review Activity 2a on Page 47.Then ask students to complete the message according to Activity 2a.Some partial sentences are given to students. Write about one person's collection.When students work, walk around the room checking the progress and offering help as needed.When they finish, ask some students to read their messages to the class.
教師帶領學生復習有關描述寵物的詞匯,采用教師提問學生回答的方進行。如:T:What animals do you think would be good pets?What animals do you think would be bad pets?What do you think are good animals for a six-year-old child?然后學生進行 pairwork 練習。Task two: 師生互動,學習探究 1、播放3a部分的錄音,引導學生一邊聽錄音,一邊跟讀。2、通過聽錄音學生回答以下問題:Why do you think pot-bellied pigs are popular?What are the advantages and disadvantages of keeping such a pet?教師對學生的回答進行及時點評。3.學習范文,學習重點短語,為下步的模仿寫作提供語言素材。T :1. )Have you ever kept a pig as a pet?Do you like pigs? St.:No.…Why don’t you like to keep a pig? St: No.They’re too dirty and lazy(Do you know in some foreign countries like Hollyland, Australia,pigs are the most popular pet.there’s a kind of pig.(圖)it has an interesting name? it ‘s called a pot-bellied pig.) Now,let’s learn an article about this kind of interesting pet.2.)play the tapeSt.:Listen and repeat3.)show some Qs on computer(本子St.: read silently,then answerthe Qs(本子)4.)Ask ss. Close book and retell this passage.(what is a pot-bellied pig? Is it a good or bad pet? ) St.: retell it to each other“A pot –bellied pig is a popular pet now…”5.read the article together.St.:.practice reading
二、說教學目標1.認識“渡、蔭”等9個生字,會寫“傘、姨”等8個生字。 2.默讀課文,根據(jù)情境展開合理想象,并把想象的內(nèi)容寫下來。? 3.正確流利地朗讀課文,有感情地朗讀重點句子,感受作者對喜鵲的喜愛之情。三、說教學重難點1.識記生字,朗讀課文,根據(jù)情境展開合理想象,并把想象的內(nèi)容寫下來。(重點) 2.感受“我”對楓樹和喜鵲的喜愛,感受故事的童趣。(難點)四、說教法和學法1.創(chuàng)設情境法主要是通過創(chuàng)設情境,讓學生進入情境中,激發(fā)學生的內(nèi)在情感,為學生進行想象找到共鳴點和切入點。? 2.閱讀法我采用朗讀、默讀。教師范讀,表演讀,分角色讀等引導學生感受作者對喜鵲的喜愛之情。3.練習設計法《語文課程標準》中指出'語文課程是一門學習語言文字運用的綜合性、實踐性課程',充分說明了語文練習的重要性。練習有助于學生形成熟練的技能和發(fā)展學生的思維能力。因此,設計語言訓練的練習,是在培養(yǎng)學生的應用意識、實踐能力。新課程標準倡導'自主、合作、探究'的學習方式,于是我將'學習的主動權還給學生'。通過自主朗讀、小組合作交流、討論探究等方式開展。
三、說教學目標1.認識“曾、蒙”等13個生字;會寫“鋒、昨”等9個生字。2.引導學生一邊朗讀一邊想象,通過有感情地朗讀,理解課文,體會雷鋒叔叔的奉獻精神。3.引導學生通過讀書感悟“哪里需要獻出愛心,雷鋒叔叔就出現(xiàn)在哪里”的深刻含義。四、說教學重難點 1.培養(yǎng)學生搜集資料的能力,通過感悟雷鋒事跡,懂得奉獻愛心,樂于助人。(重點)2.引導學生通過讀書感悟“哪里需要獻出愛心,雷鋒叔叔就出現(xiàn)在哪里”的深刻含義。(難點)五、說教法和學法1.朗讀感悟法,本文語言優(yōu)美,讀起來瑯瑯上口,引導學生多讀,從而感受到語言文字背后的鮮明形象,引起學生對課文中描述的事物與情景的關注,入境入情,促進學生自悟自得。2.遵循以學生為主體、教師為主導、訓練為主線的三為主原則,引導學生在讀中積累、讀中感悟、讀中運用。架起閱讀教學與寫作教學之間的橋梁。
一、說教材《沙灘上的童話》是統(tǒng)編語文小學二年級下冊第四單元的一篇課文。這是一個非常感人的故事,課文比較具有童趣,與孩子的生活相貼近,符合孩子的年齡特點。 作者用詩一般的語言講述了一群孩子在沙灘上壘起一座城堡,然后展開想象的翅膀編織了一個美麗的童話:城堡里住著一個兇惡的魔王,搶走了美麗的公主……最后,這群孩子成為攻打城堡的勇士,他們炸死了魔王,救出了公主。故事一方面展現(xiàn)了孩子們快樂繽紛的童年生活,另一方面也歌頌了一種人間的善良溫情與正義。在孩子們的童話中,那對生活的熱愛之情,那純真地對他人的關愛和幫助,盡顯人性之美。二、說學情二年級下學期,學生已經(jīng)具備了一定的學習字詞的能力和自主閱讀的能力。這篇課文的詞語比較淺顯,可以讓學生在閱讀中自己積累。對于生字的教學,我重點講述容易混淆的生字,同時,這樣也可以從現(xiàn)在開始培養(yǎng)學生養(yǎng)成良好的預習及閱讀習慣。 但學生由于年齡小,注意力不夠集中,所以更喜歡情節(jié)性較強的故事,需要教師引導在故事中體驗情感。
六、說教學過程(一)創(chuàng)設情境,激趣導入 一堂課的開始,為了使學生盡快地進入學習狀態(tài),在情境創(chuàng)設中,應該做到新穎,要讓學生感受到一種新的情境,從而產(chǎn)生好奇心,達到集中注意力的目的。教學開始,我首先創(chuàng)設情境,提出了兩個問題:1.如果你在大街上迷路了,你會怎么做?2.如果你在野外迷了路,你又會怎么做?【設計意圖】這兩個問題的提出讓學生區(qū)分在不同的地點迷了路要用不同的方法。然后我順勢導入課文:我們來學習課文,看看如果在野外迷了路,有什么辦法分辨方向。(二)初讀課文,整體感知 1.讓學生自由讀課文,要求把字音讀準,把句子讀通順。然后老師范讀一遍,讓學生注意聽老師是怎么讀的,如字音、節(jié)奏等。2.再次自由讀課文,按著老師的方法讀詩歌,然后把本課的生字讀一遍。【設計意圖】這樣,學生對于課文的生字和大概內(nèi)容就有了一個整體印象,培養(yǎng)了他們的自學能力。