公然課教課設(shè)計(jì)講課教師：班級(jí)：講課時(shí)間：Lesson26KeeptheCandleBurning教課目的1.記憶單詞holder,shallow,lighter,match,examine,oxygen;短語useup,bemadeupof。2.掌握要點(diǎn)句型:Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.Howfardoesthewaterrise?Letthecandleburnfortwoorthreeminutes.3.激發(fā)學(xué)生興趣,向別人介紹自己所做的相關(guān)焚燒的實(shí)驗(yàn)。4.能夠用英語描繪和解說本課的實(shí)驗(yàn)。教課內(nèi)容：1.學(xué)會(huì)并能正確使用單詞及短語:holder,shallow,lighter,match,examine,oxygen,useup,bemadeupof。2.能夠運(yùn)用以下句型:①Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.②Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.③Howfardoesthewaterrise?④Letthecandleburnfortwoorthreeminutes.教課重難點(diǎn)：1.能夠正確應(yīng)用本課的要點(diǎn)詞匯holder,shallow,lighter,match,examine,oxygen;掌握短語useup,bemadeupof。2.能夠用英語正確地描繪實(shí)驗(yàn)過程。教課準(zhǔn)備：準(zhǔn)備實(shí)驗(yàn)用的資料:一根蠟燭、一個(gè)燭臺(tái)、一個(gè)大的玻璃罐、一個(gè)淺盤子和一些水、一個(gè)打火機(jī)。教課過程：Step1ReviewDescribetheexperimentthatwedidyesterday.(經(jīng)過對(duì)昨天實(shí)驗(yàn)的復(fù)述，回首復(fù)習(xí)所學(xué)知識(shí))Step2.LeadinT:Hello,class.Todaywe’lllearnLesson26.Nowpleaselookatthesethings:acandle,acandleholder,abigglassjar,ashallowdish,somewaterandalighter.Canyouguesswhatwewilldointhisclass?Ss:Makeanexperiment.’llmakeanexperiment.Doyouwanttoknowwhatwillhappen?Nowlet’sbeginourclass.[設(shè)計(jì)企圖]教師利用帶來的教具,向?qū)W生們一一介紹，惹起了學(xué)生對(duì)英語課學(xué)習(xí)的激烈的求知欲和氣奇心，為本課的實(shí)驗(yàn)介紹確立基礎(chǔ)。Step3.Presentation1/4Theteacherusematerialobjecttoteachthenewwords.Askstudentstotrytoreadthesewords.Thestudentsfollowtheteacherthreetimes.Thengivethestudentsfiveminutestorememberthewords.Letstudentsspellandreadthemonebyone.[設(shè)計(jì)企圖]教師以實(shí)物的形式體現(xiàn)本課中出現(xiàn)的生詞,領(lǐng)著學(xué)生們朗誦并記憶,為下邊的課文學(xué)習(xí)做好充分準(zhǔn)備。Step4.1.Readthetextaloud.T:Boysandgirls,it’sourreadingtime.Pleasereadafterthevideoandyoushouldpaymoreattentiontoyourpronunciation.[設(shè)計(jì)企圖]讓學(xué)生高聲朗誦課文,對(duì)課文的意思有個(gè)大概的認(rèn)識(shí),關(guān)于培育學(xué)生的正確發(fā)音以及培育學(xué)生的語感都有重要作用。2.Carefulreading.Givethestudentsseveralminutestoreadthetextbythemselves.Readthelessonandfillintheblanks（.let’sdo）it1Let’sdotheexperimenttogether!Putthecandleinthecandleholder.Putthecandleoralighter.Whatcanyousee?Thecandleisburning.thecandleburnfortwoorthreeminutes.Thencarefullyputthejaroverituntilthetopofthejarrestsonthedish.Asthecandleburns,ittheoxygenintheair.Whenthecandlestops,ithasusedupalltheoxygenintheair.Thewaterinsidethejarandfillsaboutofthejar.Thisisbecauseaboutonefifthoftheairismadeupofoxygen.【Keys】match,Let,uses,burning,rises,onefifth[設(shè)計(jì)企圖]學(xué)生再次閱讀課文，對(duì)課文內(nèi)容有更進(jìn)一步的認(rèn)識(shí)，提取文章的粗心。3.Readthetextandfindoutmainphrasesandsentences.Mainphrases:·useup·bemadeupofMainsentences:·Scienceissointeresting!·Fillthedishhalffullwithwater.·Lightthecandle.·Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.·Thewaterinsidethejarrises.·Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.[設(shè)計(jì)企圖]學(xué)生經(jīng)過小組合作研究，找出文中的要點(diǎn)句子和短語，教師幫助學(xué)生解說，為學(xué)生對(duì)文章的理解消除語言阻礙。StepⅣ.Project1.Dotheexperimentingroups.Readabouttheexperimentinthislesson.Withagroupofclassmates,practicethe’tforgettthings:·First,describeyourexperiment.·Second,asktheclasswhattheythinkwillhappen.2/4·Third,dotheexperiment.·Finally,asktheclassiftheresultiswhattheyexpected.2.Writeanexperimentreport.[設(shè)計(jì)企圖]小組合作做實(shí)驗(yàn)，一人做實(shí)驗(yàn)，一人寫實(shí)驗(yàn)報(bào)告，其余成員用英語描繪實(shí)驗(yàn)過程，鍛煉學(xué)生的著手能力、寫作能力以及口語表達(dá)能力。StepⅤ.Practice（let’sdo）it2Ⅰ.選詞(組)填空1.Don’t(useup/pushup)alloftheink.Leavesomeforme.2.Themedicalteam(ismadeof/ismadeupof)fiveexperienceddoctors.3.Pleasefillthehole(with/in)sandandwater.4.Theydidn’trealizetheirmistake(until/as)wetoldthem.5.Mybrotherwasn’t(strongenough/enoughstrong)toliftthebox.[設(shè)計(jì)企圖]掌握本課的要點(diǎn)短語和句子以后做詞匯練習(xí),有效穩(wěn)固本課所學(xué)知識(shí)點(diǎn)。StepⅥ.SummaryInthisclass,we’velearnthowtomakeanexperimentandpracticethisexperiment.[設(shè)計(jì)企圖]給學(xué)生以總結(jié),讓學(xué)生明確這節(jié)課的學(xué)習(xí)內(nèi)容。StepⅦ.Homework1.Finishofftheexercisesintheactivitybook.2.PreviewLesson27.[設(shè)計(jì)企圖]讓學(xué)生經(jīng)過習(xí)題穩(wěn)固本節(jié)知識(shí)點(diǎn),并提早做好預(yù)習(xí)。板書設(shè)計(jì)Lesson26KeeptheCandleBurningMainphrases:·useup·bemadeupofKeystructures:·Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.·Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.3/4教材解讀☆1.Scienceissointeresting!so為副詞,意為“這樣,這樣”,用于修飾形容詞或副詞的原級(jí),表示程度。常有用法以下:(1)“so+形容詞+a/an+單數(shù)名詞”相當(dāng)于“sucha/an+形容詞+單數(shù)名詞”。(2)so后可接many,much,few和little來表示名詞的數(shù)目。(3)sothat意為“這樣以致于”,構(gòu)成結(jié)果狀語從句。interesting為形容詞,意為“風(fēng)趣的”,表示事物自己含有令人感興趣的要素,可作表語或定語,用于說明物?！就卣埂縤nterested也為形容詞,意為“感興趣的”,表示人對(duì)物的感覺,在句中可作表語,常用于固定短語be/getinterestedin對(duì)“感興趣”。2.Fillthedishhalffullwithwater.halffullwithwater為形容詞短語,在句中作狀語,表陪伴狀態(tài)。3.Lightthecandle.light為動(dòng)詞,意為“點(diǎn)燃”,可構(gòu)成短語lightup點(diǎn)“(煙),照亮”,賓語為代詞時(shí),應(yīng)放在light與up之間。light的過去式和過去分詞為lighted/lit,lighted/lit?！就卣埂?1)light作名詞時(shí),意為“燈,光”。(2)light作形容詞時(shí),意為“輕的,淺的”。4.Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.carefully為副詞,意為“仔細(xì)地,仔細(xì)地”,其形容詞形式為careful,意為“當(dāng)心的”。care可用作動(dòng)詞,意為“關(guān)懷”,也可用作名詞,意為“照料”。5.Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.useup意為“用完,用光”,為“動(dòng)詞+副詞”構(gòu)成的短語。這種短語用名詞作賓語時(shí),名詞可用在副詞前,也可放在副詞后;用代詞作賓語時(shí),代詞則一定放在副詞前,該短語相當(dāng)于runoutof,可用于被動(dòng)語態(tài)。6.Thewaterinsidethejarrises.rise為不及物動(dòng)詞,意為“升起,上升”,其過去式和過去分詞分別為rose,risen。rise多用于表示日月星斗的升起、河水或物價(jià)上升等方面。7.Becauseaboutonefi