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人教部編版七年級語文上冊天上的街市教案

  • 洋務(wù)運動教案八年級 3篇

    洋務(wù)運動教案八年級 3篇

    1.軍事工業(yè)  時間:19世紀(jì)60—70年代  旗號: 自強  特點:1、采取雇傭勞動制,使用機器生產(chǎn)帶有資本主義的因素  2、企業(yè)官辦,管理方式--封建衙門式  產(chǎn)品--軍隊使用不作為商品投放市場  性質(zhì):帶有資本主義因素  的封建性質(zhì)的企業(yè)

  • 五年級綜合實踐活動教案

    五年級綜合實踐活動教案

    第二課《怎樣保護我們的眼睛》  一、課題的確定背景  每當(dāng)我們走進校園,總會看到一個個“小眼鏡”在校園里走來走去;每當(dāng)我們走進教室,也會看到許許多多的“小眼鏡”坐在教室里學(xué)習(xí)。透過這“小眼鏡”,我們驚訝,我們震撼,我們傷感!青少年是祖國的未來,他們需要通過眼睛觀察和感知美麗的大千世界,為了讓學(xué)生清楚造成眼睛近視的原因,了解眼睛近視給自己的學(xué)習(xí)生活帶來的危害,力求通過此課題的研究,使之認識到從小保護眼睛的重要性,提高學(xué)生的護眼意識,更好地為學(xué)生的健康成長服務(wù)。

  • 部編版三年級下冊語文口語交際《勸告》說課稿

    部編版三年級下冊語文口語交際《勸告》說課稿

    統(tǒng)編教材語文三年級下冊第七單元口語交際 《勸說》說課稿 今日,我說課的題目是統(tǒng)編教材小學(xué)語文三年級下冊第七單元口語交際《勸說》。我主要從以下六個方面進展說課,一、說教材,二、說學(xué)情,三、說教學(xué)目標(biāo),四、說教學(xué)過程,五、說板書設(shè)計,六、說教學(xué)反思。 一、說教材 “勸說”是日常人際交往中常用的溝通方式,也是現(xiàn)代公民現(xiàn)實生活的需要。本課教材由三局部組成。 第一局部是一幅情境圖,一個同學(xué)坐在樓梯扶手上往下滑。通過泡泡圖里三個同學(xué)的不同勸說,引發(fā)學(xué)生思索并爭論:你覺得那個同學(xué)更有可能承受誰的勸說?為什么?在比擬中幫忙學(xué)生感知、理解勸說的要領(lǐng)。

  • 道德與法治八年級上冊進社會作業(yè)設(shè)計

    道德與法治八年級上冊進社會作業(yè)設(shè)計

    二、單元分析( 一) 課標(biāo)要求本單元體現(xiàn) 2022 年版課程標(biāo)準(zhǔn)的課程理念,以立德樹人為根本任務(wù)、遵 循育人規(guī)律和學(xué)生成長規(guī)律、以社會發(fā)展和學(xué)生生活為基礎(chǔ),在學(xué)生親近社 會、了解社會的基礎(chǔ)上培養(yǎng)政治認同、道德修養(yǎng)、法治觀念、健全人格、責(zé) 任意識。第一課對應(yīng) 2022 版課程內(nèi)容生命安全與健康部分:理解不同的社會角色,形成親社會行為。能正確 認識和處理自己和同學(xué)、朋友的關(guān)系,在團隊活動中增強合作精神。做文明 的社會成員;中華優(yōu)秀傳統(tǒng)文化教育:感悟天下興亡、匹夫有責(zé)的擔(dān)當(dāng)意識,厚植愛國 主義情懷。第二課對應(yīng) 2022 版課程內(nèi)容生命安全與健康:客觀認識和對待自己,形成正確的自我認同,提高自 我管理能力;法治教育:辨別媒體中的不良信息,了解網(wǎng)絡(luò)環(huán)境中如何保護未成年人 隱私等合法權(quán)益。

  • 部編版英語七年級上總復(fù)習(xí)知識點教案

    部編版英語七年級上總復(fù)習(xí)知識點教案

    2.陌生人初次見面打招呼What’s your name?(What’s = What is)Alan./I’m Alan./My name is AlanMiller.(first name,last name = family name)Are you Helen?Yes, I am.Niceto meet you.(這里的Iam 不能縮寫)Nice to meetyou, too.What’s his name?His name isJim.Is she Linda?

  • 人教版新課標(biāo)PEP小學(xué)英語五年級下冊Recycle1教案(內(nèi)容詳細)

    人教版新課標(biāo)PEP小學(xué)英語五年級下冊Recycle1教案(內(nèi)容詳細)

    學(xué)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(zhǔn)備相關(guān)節(jié)日及部分中外名人的圖片或音像資料片。教師課前準(zhǔn)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(xué)過程:Warm up (熱身)活動一復(fù)習(xí)單詞教學(xué)參考時間:3分鐘(1)教師播放Let’s chant部分的歌謠,學(xué)生聽一遍后跟唱。(2)出示帶有各個月份特征的單詞卡片。學(xué)生看圖說出單詞,并一起拼讀其縮寫形式。幫助學(xué)生在有節(jié)奏的說唱中鞏固記憶單詞,為在后面活動中學(xué)生能夠熟練應(yīng)用作鋪墊?;顒佣?復(fù)習(xí)句子教學(xué)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(dǎo)學(xué)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(xué)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(guān)生日問答的語句,為Let’s find out1的活動做準(zhǔn)備。

  • 人教版新課標(biāo)PEP小學(xué)英語五年級下冊What Are You Doing教案

    人教版新課標(biāo)PEP小學(xué)英語五年級下冊What Are You Doing教案

    教學(xué)參考時間:2—3分鐘教師讓學(xué)生說出幾個家庭成員名稱,如:father, mother, sister, brother, uncle等,自己或讓學(xué)生把單詞寫在黑板的一側(cè),再讓學(xué)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(xué)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(xué)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(xué)參考時間:1—2 分鐘教師讓學(xué)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(xué)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(xué)生做游戲?;顒邮唬壕氁痪毥虒W(xué)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(xí)。教師講解題目要求。教師播放錄音,做Listen and number 部分練習(xí)。要求按所聽內(nèi)容在圖上寫出序號。再次播放,讓學(xué)生按錄音內(nèi)容填空。鼓勵學(xué)生自己讀讀所寫句子。

  • 人教版新目標(biāo)初中英語八年級下冊What should I do教案2篇

    人教版新目標(biāo)初中英語八年級下冊What should I do教案2篇

    說明:在幫Li Lei提建議的同時,教育學(xué)生如何學(xué)好英語。第三課時教學(xué)目標(biāo)1. 語言目標(biāo):a) 詞匯: Original, in style, haircut, the same as.b) 語言結(jié)構(gòu):My friend wears the same clothes and has the same haircut as I do.2. 能力目標(biāo):大多數(shù)學(xué)生能夠談?wù)撟约合矚g哪種服裝,提高查找信息的能力。3. 情感目標(biāo):學(xué)會如何與朋友相處,要有自己對時尚的看法。教學(xué)重點掌握一些重要詞匯。教學(xué)難點學(xué)會談?wù)搯栴},并能提出書面建議?!艚虒W(xué)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(xué)生完成3b部分的內(nèi)容,給Left Out提出書面的建議;學(xué)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(xué)們給自己提出一個建議,并作筆錄;學(xué)生兩、三個人分成一組,隨意性地進行口語交際,談?wù)揚14的第4部分的某個問題,相互交換意見。

  • 人教版新目標(biāo)初中英語八年級下冊If you go to the party, you’ll have a great time教案2篇

    人教版新目標(biāo)初中英語八年級下冊If you go to the party, you’ll have a great time教案2篇

    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(fù)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(fù)合句當(dāng)中充當(dāng)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(xué)了三類連詞,一類連詞是that口語當(dāng)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(dāng)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 ?

  • 人教版新課標(biāo)PEP小學(xué)英語五年級下冊Look at the Monkeys教案

    人教版新課標(biāo)PEP小學(xué)英語五年級下冊Look at the Monkeys教案

    教學(xué)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(xué)生一分鐘時間尋找。(3)請找到圖片的學(xué)生根據(jù)圖片上的人物或動物正在做的動作表演對話?;顒悠撸翰乱徊陆虒W(xué)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(xué)生用They are…猜圖片中的內(nèi)容。(2)猜對的學(xué)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(xué)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(xué)參考時間:5分鐘(1)活動手冊Ask and write. 讓學(xué)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(xué)生仔細觀察兩幅圖找出不同的地方,并用英語表達出來。活動九:小結(jié)教學(xué)參考時間:1分鐘本課我們學(xué)習(xí)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

  • 人教版新課標(biāo)PEP小學(xué)英語五年級下冊This Is My Day教案

    人教版新課標(biāo)PEP小學(xué)英語五年級下冊This Is My Day教案

    學(xué)生初步了解對話內(nèi)容,在描述中培養(yǎng)學(xué)生的語言運用能力。(2)教師讓學(xué)生自己閱讀本部分對話,不理解的生詞和句子可以和同學(xué)或老師共同商討。(3)教師幫助學(xué)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(xué)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(xué)生重復(fù)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(xué)生跟讀either,感悟單詞的用法,教師講解意思:(不......),也不...啟發(fā)學(xué)生用either說兩句話:In the rain, I can’t ... I can’t ..., either,從而在應(yīng)用中鞏固單詞的讀音和用法。

  • 人教版新目標(biāo)初中英語八年級下冊Have you ever been to an amusement park教案

    人教版新目標(biāo)初中英語八年級下冊Have you ever been to an amusement park教案

    (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

  • 人教版新目標(biāo)初中英語八年級下冊It’s a nice day, isn’t it教案2篇

    人教版新目標(biāo)初中英語八年級下冊It’s a nice day, isn’t it教案2篇

    "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(xué)?!蓖ǔT谡n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(yīng)該知道怎樣去進行閑聊。你還應(yīng)該知道與不同的人該談?wù)撌裁礃拥脑掝}。認真的學(xué)習(xí)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。)

  • 人教版新目標(biāo)初中英語八年級下冊He said I was hard-working教案2篇

    人教版新目標(biāo)初中英語八年級下冊He said I was hard-working教案2篇

    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.

  • 人教版新目標(biāo)初中英語八年級下冊Why don’t you get her a scarf教案

    人教版新目標(biāo)初中英語八年級下冊Why don’t you get her a scarf教案

    教師帶領(lǐng)學(xué)生復(fù)習(xí)有關(guān)描述寵物的詞匯,采用教師提問學(xué)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(xué)生進行 pairwork 練習(xí)。Task two: 師生互動,學(xué)習(xí)探究 1、播放3a部分的錄音,引導(dǎo)學(xué)生一邊聽錄音,一邊跟讀。2、通過聽錄音學(xué)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(xué)生的回答進行及時點評。3.學(xué)習(xí)范文,學(xué)習(xí)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

  • 人教版新目標(biāo)初中英語八年級下冊How long have you been collecting shells教案2篇

    人教版新目標(biāo)初中英語八年級下冊How long have you been collecting shells教案2篇

    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.

  • 人教版新目標(biāo)初中英語八年級下冊What were you doing when the UFO arrived教案2篇

    人教版新目標(biāo)初中英語八年級下冊What were you doing when the UFO arrived教案2篇

    (一).知識方面: 1.培養(yǎng)學(xué)生能運用過去進行時來描述、談?wù)撨^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(xué)生的想象力和角色扮演的合作能力。 3.培養(yǎng)學(xué)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(biāo)是Talk about past events and tell a story(談?wù)撨^去的時間和講述一個故事),圍繞這一目標(biāo),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(xué)習(xí)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(xué)習(xí)過去進行時的有關(guān)知識。Was/were+現(xiàn)在分詞,是該時態(tài)的表達式。 3.在學(xué)習(xí)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(dǎo)的狀語從句的句型結(jié)構(gòu)。注意它們的不同。

  • 人教版新目標(biāo)初中英語八年級下冊Would you mind turning down the music教案

    人教版新目標(biāo)初中英語八年級下冊Would you mind turning down the music教案

    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.

  • 道德與法治八年級上冊豐富的社會生活作業(yè)設(shè)計

    道德與法治八年級上冊豐富的社會生活作業(yè)設(shè)計

    2.內(nèi)容內(nèi)在邏輯本課由引言和兩框內(nèi)容組成。引言開宗明義,指出人的成長離不開社會,意在告訴 學(xué)生,社會性是人的根本屬性,離開社會提供的物質(zhì)和精神支持,個人就是無源之水、 無本之本。因此,要把社會當(dāng)作成長的課堂,在其中學(xué)習(xí)、鍛煉、發(fā)展,這是成長的必 經(jīng)之路。第一框“我與社會”,從中學(xué)生自身生活經(jīng)驗入手,引導(dǎo)學(xué)生在體驗社會豐富多彩 的同時,認識到隨著身體的發(fā)育、智力的提高、能力的增強,對社會生活的感受越來越 豐富,認識越來越深刻,進而認識到“我”與社會的關(guān)系,理解“我”是社會中的一分 子,在社會交往中建立了各種社會關(guān)系,進而獲得不同的社會身份,扮演不同的社會角 色,承擔(dān)相應(yīng)的社會責(zé)任。第二框“在社會中成長”,引導(dǎo)學(xué)生結(jié)合個人經(jīng)驗探究社會對個人成長的支持和幫助,認識人的成長是不斷社會化的過程,養(yǎng)成親社會行為對個人成長的重要意義并努力 踐行。(三) 學(xué)情分析初中學(xué)生處于由兒童向青年過渡的生理發(fā)育期和精神成長期,學(xué)校教育應(yīng)幫助學(xué)生 正視自己所處的人生階段,引導(dǎo)其“過積極健康的生活,做負責(zé)任的公民”。

  • 北師大初中數(shù)學(xué)九年級上冊一元二次方程1教案

    北師大初中數(shù)學(xué)九年級上冊一元二次方程1教案

    解:設(shè)需要剪去的小正方形邊長為xcm,則紙盒底面的長方形的長為(19-2x)cm,寬為(15-2x)cm.根據(jù)題意,得(19-2x)(15-2x)=81.整理,得x2-17x+51=0(x<152).方法總結(jié):列方程最重要的是審題,只有理解題意,才能恰當(dāng)?shù)卦O(shè)出未知數(shù),準(zhǔn)確地找出已知量和未知量之間的等量關(guān)系,正確地列出方程.在列出方程后,還應(yīng)根據(jù)實際需求,注明自變量的取值范圍.三、板書設(shè)計一元二次方程概念:只含有一個未知數(shù)x的整式方 程,并且都可以化成ax2+bx+c =0(a,b,c為常數(shù),a≠0)的形式一般形式:ax2+bx+c=0(a,b,c為?! ?數(shù),a≠0),其中ax2,bx,c   分別稱為二次項、一次項和   常數(shù)項,a,b分別稱為二次   項系數(shù)和一次項系數(shù)本課通過豐富的實例,讓學(xué)生觀察、歸納出一元二次方程的有關(guān)概念,并從中體會方程的模型思想.通過本節(jié)課的學(xué)習(xí),應(yīng)該讓學(xué)生進一步體會一元二次方程也是刻畫現(xiàn)實世界的一個有效數(shù)學(xué)模型,初步培養(yǎng)學(xué)生的數(shù)學(xué)來源于實踐又反過來作用于實踐的辯證唯物主義觀點,激發(fā)學(xué)生學(xué)習(xí)數(shù)學(xué)的興趣.

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