高中英語-Global warming教學(xué)設(shè)計學(xué)情分析教材分析課后反思

PAGE2PAGEBook6Unit4Globalwarming導(dǎo)學(xué)案（PeriodOne:Reading）命制人：審核：高二全體英語老師課前案Skimthetextandfinishthefollowinginformation.1.What’sthemaintopicofthepassage?Themaintopicofthepassageisabout.2.Whowrotethemagazinearticle?Whatisthenameofthemagazine?wrotethemagazinearticle;thenameofthemagazineis.3.Whatarethenamesofthethreescientistsmentionedinthearticle?Thenamesofthethreescientistsmentionedinthearticleare,,and.Dotheyagreewithoneanother?.4.Thepassagecanbedividedintothreesections,matchthemwiththemainideaofeachsection.Part1.(1)A.HowglobalwarmingcomesaboutPart2.(2-5)B.ListtwodifferentattitudestowardsglobalwarmingPart3.(6)C.IntroductionofglobalwarmingPart4.(7)D.Whetherpeopleshoulddosomethingaboutglobalwarming課中案學(xué)習(xí)目標:1.Tolearnsomeimportantwordsandphrasesaboutglobalwarming.2.Todevelopthereadingskillsbyskimmingandscanningthepassage.3.Tostrengthentheawarenessofenvironmentprotection.Step1FastreadingReadthetextquicklyandchoosethebestanswers.1.Howmuchdidthetemperatureriseinthe1900s?A．OnedegreeFahrenheit.B．OneCelsius.C．Twodegrees.D．ThirtydegreesCelsius.2.Whatcausestheearth’stemperatureincreasing?A.CuttingtreesB.Wastingthefarmland.C.RunningoutoftheriverwaterD.Burningfossilfuels.3.WhichofthefollowingisDr.JaniceFoster’sopinion?A.Theresultofthetemperatureincreasewillbeserious. B.Theamountofwarmingisnothingserious.C.Weneedn’tworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.4.AccordingtoGeorgeHambley,.A.Globalwarmingisaseriousproblem.B.Thereisnoneedtoworryaboutglobalwarming.C.ThelevelsofCO2intheairwillbecomelowerinthefuture.D.Moreanimalswillmakegreenhousegasesdecrease.5.Wecaninferfromthetextthat__________.A.thedebateabouttheeffectsofglobalwarminghasnotbeensettled.B.thegreenhouseeffectistheresultofpeople’sactions.C.allscientiststhinkitisimportanttoreducetheamountofCO2intheatmosphere.D.reducinggreenhousegaseswillimmediatelydecreasetheearth’stemperature.Step2CarefulreadingReadPara.2toPara.6andfillintheblanks.(Para.2-Para.3)Thereasonsforglobalwarminggreenhousegases(Para.4-Para.5)Thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast.AccordingtoDr.CharlesKeeling,fromto,theamountintheatmospherewentupfromaroundpartstoaroundpartspermillionDr.JaniceFosterbelievesoverthenextcentury,theamountofwarmingcouldbeaslowasdegreesCelsius,butitcouldalsobeashighasdegrees.(Para.6)Differentopinionsaboutglobalwarming.Dr.Foster(acatastrophe)GeorgeHambley(apositivething)1.arisein2.severestorms,__________,__________,famines3.thespreadof4.thedisappearanceofPlantswillCropswillTherewillbeagreaterrangeofStep3FurtherreadingTrueorFalse（）1.Thetemperatureinthelastcenturyseemedtoincreasemuch.（）2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.（）3.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.（）4.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.（）5.Itisclearwhattheeffectsofglobalwarmingwillbe.Step4Fillintheblankstoretellthepassage.Thetemperatureoftheearth1(rise)aboutonedegreeduringthe20thcentury.Howhasthiscome2?Allscientistssubscribe3theviewthatitishumanactivity4hascausedthe5(globe)warmingrather6arandombutnaturalphenomenon.Somescientiststhinkweaddlarge7(quantity)ofcarbondioxidetotheair.Somescientistsbelievetheburningofmoreandmorefossilfuels8(have)resultedintheincreaseofcarbondioxide.Greenhousegasescontinuetobuild9.ItmaybeacatastrophebutGeorge10(state)thatitisapositivething.Step5Freetalk—ashortspeech能力提升Betweenthetwoopinions,decideononetohaveadiscussioninyougroupandthenchooseaspeakertogiveaspeechonbehalfofyourgroup.Thefollowinginformationmayhelpyou.Opinion1:Weshoulddosomethingaboutglobalwarming.Opinion2:Weshoulddonothingaboutglobalwarming.negativeeffect消極作用Thesealeveltorise海水上漲Severestorms風(fēng)暴Droughts干旱Famines饑荒Thespreadofdisease疫病Thedistinctionofspecies物種毀滅Actions:usecleanenergy;lesscoaloroil;plantmoretrees;gotoschoolonfootorbusinsteadofdriving;…………positiveeffect積極作用Makeplantsgrowfaster使植物生長更快Cropswillproducemore使莊稼更增產(chǎn)Encourageagreaterrangeofanimals促使動物種群的豐富……..Boysandgirls,Itisagreathonorformetogivethespeechaboutglobalwarming.AllourgroupmembersareinfavorOpinion1becauseofOpinion2becauseitistimeforustotakesomeactionssuchas……Sothereisnoneedtoworrytoomuchaboutglobalwarming.OK.Somuchformyspeechandthanksforyourlistening.Step6Summary課后案課外延伸閱讀FurtherreadingaboutglobalWarmingGlobalwarmingistheunusuallyrapidincreaseinEarth’saveragesurfacetemperatureoverthepastcenturyprimarilyduetothegreenhousegasesreleasedaspeopleburnfossilfuels.Theglobalaveragesurfacetemperaturerose0.6to0.9degreesCelsius(1.1to1.6°F)between1906and2005,andtherateoftemperatureincreasehasnearlydoubledinthelast50years.Temperaturesarecertaintogoupfurther.Earth’snaturalgreenhouseeffectEarth’stemperaturebeginswiththeSun.Roughly30percentofincomingsunlightisreflectedbackintospacebybrightsurfaceslikecloudsandice.Oftheremaining70percent,mostisabsorbedbythelandandocean,andtherestisabsorbedbytheatmosphere.Theabsorbedsolarenergyheatsourplanet.Astherocks,theair,andtheseaswarm,theyradiate“heat”energy(thermalinfraredradiation).Fromthesurface,thisenergytravelsintotheatmospherewheremuchofitisabsorbedbywatervaporandlong-livedgreenhousegasessuchascarbondioxideandmethane.WhentheyabsorbtheenergyradiatingfromEarth’ssurface,microscopicwaterorgreenhousegasmoleculesturnintotinyheaters—likethebricksinafireplace,theyradiateheatevenafterthefiregoesout.Theyradiateinalldirections.TheenergythatradiatesbacktowardEarthheatsboththeloweratmosphereandthesurface,enhancingtheheatingtheygetfromdirectsunlight.Thisabsorptionandradiationofheatbytheatmosphere—thenaturalgreenhouseeffect—isbeneficialforlifeonEarth.Iftherewerenogreenhouseeffect,theEarth’saveragesurfacetemperaturewouldbeaverychilly-18°C(0°F)insteadofthecomfortable15°C(59°F)thatitistoday.Whathasscientistsconcernednowisthatoverthepast250years,humanshavebeenartificiallyraisingtheconcentrationofgreenhousegasesintheatmosphereatanever-increasingrate,mostlybyburningfossilfuels,butalsofromcuttingdowncarbon-absorbingforests.SincetheIndustrialRevolutionbeganinabout1750,carbondioxidelevelshaveincreasednearly38percentasof2009andmethanelevelshaveincreased148percent.II.拓展提高書面表達如何解決全球變暖是我們?nèi)祟惞餐媾R的一個難題。為了提高學(xué)生的環(huán)保意識，我們學(xué)校將舉行一場主題為“保護環(huán)境從我做起”的交流會。請你寫一篇英語短文向同學(xué)們介紹你在生活中的環(huán)保心得。要求：1.語言連貫，行文流暢；2.字數(shù)：100詞左右Book6Unit4Globalwarming--Reading學(xué)情分析本節(jié)課所面對的是高二上學(xué)期的學(xué)生，這個年齡段的學(xué)生思維活躍，有較強的求知欲，對身邊發(fā)生的事情有著強烈的好奇心。本篇課文主題為全球變暖，與每個人的生活息息相關(guān)，所以學(xué)生非常感興趣，因而導(dǎo)入新課比較容易。但是就本篇課文的內(nèi)容而言，難度不小。尤其文中談到幾位科學(xué)家對此的不同觀點，課文到最后也沒有給出定論，全球變暖到底會給我們帶來什么。所以給學(xué)生了很大自由發(fā)揮的空間去討論。我?guī)У膬蓚€班級，高二5班，學(xué)生程度相對差一些，雖然對學(xué)習(xí)很感興趣，求知欲很強，也非常想發(fā)言表達自己的觀點，但是水平有限，英語表達力差，所以總是說出的差強人意的英語，但學(xué)生的學(xué)習(xí)積極性還是令人非常欣慰的。另一個班級，高二6班，程度不錯，布置的預(yù)習(xí)任務(wù)完成的非常好。在平時的課堂上，發(fā)言比較積極，課堂活躍，加之全球變暖的話題是他們感興趣的，所以本節(jié)課設(shè)置的開放性討論應(yīng)該是為這個班級的學(xué)生而提供了大顯身手的空間。Book6Unit4Globalwarming（PeriodOne:Reading）效果分析本節(jié)課教學(xué)，教師充分體現(xiàn)了以學(xué)生為主體，教師為主導(dǎo)的教育教學(xué)思想和理念，適時引導(dǎo)學(xué)生從篇章中查找信息的方法策略，繼而以探究合作的方式對本節(jié)涉及的重、難點進行探討、梳理與評價，學(xué)生全程參與問題的討論，思維活躍，激情四溢，順利把握了重點，攻克了難點。通過當(dāng)堂檢測證明，學(xué)生出色的完成了本節(jié)的學(xué)習(xí)任務(wù)。我認為本節(jié)課有以下五個方面做得比較成功：1．通過短視頻導(dǎo)入新課，容易激發(fā)學(xué)生的學(xué)習(xí)興趣和求知欲；2．在設(shè)置學(xué)案中的題目時，通過提出具有層級性的問題層層推進，有目標地解決了各個難點，符合學(xué)生的學(xué)習(xí)規(guī)律；3．自主探究，合作探究，精彩展示等環(huán)節(jié)充分調(diào)動了學(xué)生參與課堂的積極性，把學(xué)習(xí)的主動權(quán)交給學(xué)生；4．先從課文淺層理解，再到深層分析，再到最后的自由討論給出個人觀點，充分體現(xiàn)了學(xué)生為主體。另外，本節(jié)課自認為存在的不足：時間安排上，前松后緊。到了后來學(xué)生展示的環(huán)節(jié)，就顯得非常被動。在熱Relling這個環(huán)節(jié)，學(xué)生寫出的答案都對，就沒必要全部講解，再次浪費了不少時間，十本節(jié)課的一個敗筆。對學(xué)生的鼓勵性語言太少?？傊?，教學(xué)相長。通過本節(jié)課，我要好好總結(jié)反思，為以后的教學(xué)提供寶貴的經(jīng)驗。Book6Unit4Globalwarming（PeriodOne:Reading）教材分析本文是高中英語選修6的第四單元第一課時，即閱讀課。本單元的主題是“全球變暖”。眾所周知，隨著當(dāng)今社會的發(fā)展、經(jīng)濟的增長及人民生活水平不斷的提高，環(huán)境問題已成為一個全世界人們關(guān)注的問題，同時環(huán)境問題也成為高考命題的熱門話題。在現(xiàn)在的英語閱讀文章中，關(guān)于環(huán)境和全球變暖等問題的文章也日漸增多。因而，本單元在全書當(dāng)中的重要性也是不言而喻。一、教學(xué)目標1.知識目標：1）讓學(xué)生熟練掌握本單元重點詞匯并能熟練運用2）讓學(xué)生掌握全球變暖的原因及后果2.能力目標：1）提高學(xué)生的閱讀技巧，略讀，細讀，迅速查找信息的能力等2）拓展學(xué)生對全球變暖的深層認識3.情感目標：1）培養(yǎng)學(xué)生的環(huán)保意識2）號召學(xué)生采取積極行動保護地球—我們唯一的家園二、教學(xué)重點、難點1.重點：理解課文內(nèi)容，熟練運用基本的閱讀技巧。2.難點：針對全球變暖會帶給我們的危害還是該我們帶來好處，我們要不要采取行動，組織順暢的語言給出自己合理的理由，并且在全班面前show出來。人教版選修六Unit4Globalwarming–Reading評測練習(xí)I.Fillintheblanksaccordingtothetext.Thetemperatureoftheearth1(rise)aboutonedegreeduringthe20thcentury.Howhasthiscome2?Allscientistssubscribe3theviewthatitishumanactivity4hascausedthe5(globe)warmingrather6arandombutnaturalphenomenon.Somescientiststhinkweaddlarge7(quantity)ofcarbondioxidetotheair.Somescientistsbelievetheburningofmoreandmorefossilfuels8(have)resultedintheincreaseofcarbondioxide.Greenhousegasescontinuetobuild9.ItmaybeacatastrophebutGeorge10(state)thatitisapositivething.II.拓展提高書面表達如何解決全球變暖是我們?nèi)祟惞餐媾R的一個難題。為了提高學(xué)生的環(huán)保意識，我們學(xué)校將舉行一場主題為“保護環(huán)境從我做起”的交流會。請你寫一篇英語短文向同學(xué)們介紹你在生活中的環(huán)保心得。要求：1.語言連貫，行文流暢；2.字數(shù)：100詞左右Book6Unit4Globalwarming（PeriodOne:Reading）課后反思本節(jié)教學(xué)設(shè)計體現(xiàn)了“自主學(xué)習(xí)合作探究”的教學(xué)觀，使學(xué)生從合作探究中掌握了知識，鍛煉了方法，培養(yǎng)了能力，體會到了英語學(xué)習(xí)的方法；從與同學(xué)、老師合作學(xué)習(xí)的氛圍中解決了實際問題，提高了自己英語語言的能力。總的來說對學(xué)生學(xué)習(xí)方式的完善和學(xué)生創(chuàng)新精神的培養(yǎng)發(fā)揮了重要的作用。學(xué)生方面：通過本節(jié)課的學(xué)習(xí)，他們對全球變暖的原因，危害有了更為明確的認識，對于基本的閱讀方法以及