Unit 5 Lk into Science Lets Do an Experiment初中英語(yǔ)教案

Let’sDoanExperiment教學(xué)設(shè)計(jì)一、教材分析本課是冀教版九年級(jí)第五單元LookintoScience(研究科學(xué))的第一課。整個(gè)單元以“科學(xué)研究”為話題進(jìn)行展開(kāi)，而Lesson25:Let’sDoanExperiment圍繞一項(xiàng)實(shí)驗(yàn)，證明了什么是科學(xué)的結(jié)論，學(xué)生通過(guò)關(guān)注科學(xué)和研究科學(xué)，在認(rèn)識(shí)自然現(xiàn)象和學(xué)習(xí)科學(xué)知識(shí)的過(guò)程中，培養(yǎng)科學(xué)探究精神和嚴(yán)謹(jǐn)?shù)目茖W(xué)態(tài)度，保持學(xué)習(xí)自然科學(xué)的興趣。二、教學(xué)目標(biāo) 1.知識(shí)與技能:(1)能正確理解運(yùn)用correct,method,force,besure,fill...with,cover...with,turn...upsidedown等單詞及短語(yǔ)的用法。(2).了解詞匯及短語(yǔ):experiment,jar,upside,pour,scientific,raincoat,pressure,conclude(3).能夠邊做邊用英語(yǔ)描述本課的實(shí)驗(yàn)。(4).學(xué)會(huì)依據(jù)實(shí)驗(yàn)，辨別是非。2.過(guò)程與方法:學(xué)生自學(xué)單詞并熟讀課文，然后自己總結(jié)知識(shí)要點(diǎn)，通過(guò)做實(shí)驗(yàn)、小組討論、教師點(diǎn)撥等掌握本課內(nèi)容。3.情感態(tài)度與價(jià)值觀:通過(guò)做實(shí)驗(yàn)，培養(yǎng)學(xué)生嚴(yán)謹(jǐn)?shù)目茖W(xué)態(tài)度。三、教學(xué)重點(diǎn)1.重點(diǎn)為（correct,method,force）及短語(yǔ)（besure,fill...with,cover...with,turn...upsidedown）。2.學(xué)習(xí)運(yùn)用定語(yǔ)從句。擬通過(guò)聽(tīng)、讀、自主學(xué)習(xí)、動(dòng)手做實(shí)驗(yàn)及課堂練習(xí)來(lái)突出重點(diǎn)，并以合作探究來(lái)掌握新知識(shí)。四、教學(xué)難點(diǎn)用英語(yǔ)表達(dá)如何做本課的實(shí)驗(yàn)。擬通過(guò)教師示范點(diǎn)撥，學(xué)生操作，及時(shí)練習(xí)來(lái)突破難點(diǎn)五、教學(xué)資源1.Realobjects：廣口瓶，硬紙板。用于做實(shí)驗(yàn)，直觀形象。2.Powerpoint：用于展示新知，便于理解；擴(kuò)大信息容量，拓寬視野，進(jìn)一步理解并接受新知。3.Audiotape:糾正發(fā)音，練習(xí)聽(tīng)力時(shí)使用。六、教學(xué)方法：采用以問(wèn)題為依托，學(xué)生自主學(xué)習(xí)、小組合作探究式、動(dòng)手做實(shí)驗(yàn)、教師點(diǎn)撥等方法。七、學(xué)法指導(dǎo)：通過(guò)自主學(xué)習(xí)、小組內(nèi)互幫互學(xué)、大聲朗讀、動(dòng)手實(shí)驗(yàn)、做好課堂筆記、完成課堂練習(xí)、及時(shí)總結(jié)等方法學(xué)習(xí)掌握新知。八、教學(xué)步驟Step1.ClassopeningandWarmingup(1).Greetingandplay“Boysstandup!Girlssitdown!”game.(2).Bringajarwithwaterapieceofcardboardtotheclass.Askthestudents:Whatexperimentwillwedo?Doyouliketodoexperiments?Step2.Learnthenewwordslearnthenewwordsbyshowinghowtodotheexperiment.②Listenandcirclethenewwordsinthetest.AndtrytounderstandthemeaningofthetestandLearnabouthowtousethenewwords.（GroupA.B.C）③Dothefollowingexercisestocheckiftheygraspthenewwords.1.Weshoulddothis__________（實(shí)驗(yàn)）outside!2.I_____（裝滿）thejarwithwater.3.Let’stestwhichtheoryis_________（正確的）.4.Wemustuse________________（科學(xué)的方法）tosolvetheproblem.5.The_____（力量）oftheairkeepsthewaterinthejar.6.Iturnthejar_______downandIthinkthewaterwill________out.7.I_______（斷定）thatthe_______（壓力）oftheairisstrongerthanIthought.Step3:Reading1.Readthetestloudlyingroupsandsolvethefollowingquestions①Howtodotheexperiment?②WheredoesDannythinktheyshoulddotheexperiment?③WhatisJenny’sidea?Isshesureofhertheory?2.Readthetestagainandsolvethefollowingquestionsingroups.④.WhydoesDannyputonhisraincoat?⑤.WhatdoesDannyconclude?⑥.Whatkeepsthewaterinthejar?Step4.SummaryandshowAskstudentstofindouttheimportantphrasesorsentences.Andshowthemontheblackboard.Readthephrasestogether.Explainsomedifficulties.Step5.Exercises.Finishthefollowingpassagewiththerightwords.（GroupA.B.）Danny，JennyandBriandoaninterestingexperiment.First,Brian____thejar_____water,then______thetop_____apieceofcardboard.Whenhe_____thejar_____________and_____hishand_____thecardboardslowly.Dannythinksthewaterwill________.ButJenny________thatthewaterwillstayinthejarandDannywillnot__________.Whosetheoryis________?Aftertheexperiment,They_________thatthe_______________oftheairhelpsthecardboardholdthewaterinthejar.Itisstrongenoughtoholdthewater.Theairisstrongerthanwethought.Step6：Let’sDoIt!Dotheexperimentingroups.One（GroupB.）givestheinstructions,anotherone(GroupC.)followtheinstructions.Theothers（GroupA.）observewhatwillhappen.Andtalkaboutwhy.Theforceoftheairkeepthewaterinthejar.TheairpressurehelpsthecardboardholdthewaterinthejarStep7:寫作指導(dǎo)描述實(shí)驗(yàn)時(shí)，應(yīng)用一般現(xiàn)在時(shí)態(tài)。明確實(shí)驗(yàn)步驟，可按“步驟——現(xiàn)象——原理”三個(gè)層次來(lái)進(jìn)行描述，使文章條理性強(qiáng)，層次分明。適當(dāng)使用連接詞（First…Then…Next…Finally…）,使文章過(guò)渡自然，行文流暢。用于恰當(dāng)，符合英語(yǔ)語(yǔ)言習(xí)慣，運(yùn)用好標(biāo)點(diǎn)符號(hào)，規(guī)范書寫。常用詞匯fill...with,put...on,cover...with,turn...upsidedown,take...off,push...upStep8.Homework1．Recitetheimportantphrasesandsentences2.Writeashortpassage“AnInterestingExperiment”七、Blackboarddesign.Lesson25:Let’sDoanExperimentWordscorrect,forceexperime