Unit21HumanBiologyLesson3EpidemicsExplained教學(xué)設(shè)計(jì)一、教學(xué)設(shè)計(jì)，目的和思路教材內(nèi)容說(shuō)明Epidemicsexplained是北師大版教材選修模塊7的最后一個(gè)單元中的閱讀課，介紹瘟疫在歷史上的流行和發(fā)展，文章生詞量大，有一定的教學(xué)難度。教學(xué)目的學(xué)生通過(guò)閱讀課文，了解文中一些科普知識(shí)，學(xué)會(huì)描述瘟疫的特點(diǎn)，掌握閱讀科普文章的一些方法。課堂形式提倡學(xué)生自學(xué)，以檢查預(yù)習(xí)、合作討論、你說(shuō)我猜的形式學(xué)習(xí)，體現(xiàn)學(xué)生學(xué)習(xí)的主動(dòng)性，還課堂以學(xué)生。教材內(nèi)容的加工處理用相關(guān)插圖、圖表等直觀的教學(xué)形式，讓學(xué)生能更快理解課文；必要的閱讀指導(dǎo)，有利于學(xué)生技巧的形成；相關(guān)文章的閱讀，能擴(kuò)大學(xué)生知識(shí)面；一些直觀的教具如紅絲帶和抽象的音樂(lè)，希望培養(yǎng)學(xué)生的人文素質(zhì)和高尚情感。教學(xué)過(guò)程簡(jiǎn)述布置學(xué)生預(yù)習(xí)包括讀單詞，找出文中數(shù)字的含義，簡(jiǎn)單口頭描述各次瘟疫的特點(diǎn)，做好文中的一道涉及段落補(bǔ)全的練習(xí)。Step1:Leadin包括簡(jiǎn)介和聽(tīng)英文歌曲“Tearsinheaven”，討論死亡的原因，以及有哪些常見(jiàn)的瘟疫。Step2:Learningthetext閱讀標(biāo)題，預(yù)測(cè)文章主題，同時(shí)找出文中主要瘟疫。討論數(shù)字在文中不同的含義，進(jìn)一步了解和熟悉課文。進(jìn)一步閱讀文章，了解造成瘟疫的元兇---病毒；描述瘟疫的傳播途徑，找出各次瘟疫造成的巨大影響；描述和猜測(cè)不同的瘟疫。完成段落補(bǔ)全練習(xí)，介紹相關(guān)方法。點(diǎn)出閱讀技巧。讀一段有關(guān)艾滋病對(duì)兒童危害的文字，提示我們應(yīng)該做點(diǎn)什么。Step3:ReadingStrategies:howtoreadasciencearticleReadthetitlecarefullyTopresentquestion1What’sthemainideaofthetext?Newhealththreatsareontherise.Alotofepidemicshappenedinhistory.SARSusedtobeoutofcontrol.Nowpeoplearetryingtostopitonthetrack.Weshouldpaymoreattentiontoourhealth.WecanpredictwhatwillhappeninthetextfromthetitleInthistext,someepidemicsinthehistorywillbetalked.GivemoretitlesandasktheSswhatwillbetalked.EpidemicsEpidemicsandeconomySARSThehistoryoftheBlackDeath2.Readthetextfastandgetthegeneralideaandbasicinformation.Topresentquestion2Readthefollowinggraphicandtrytotellwhichepidemicsaredescribed?(ToseethePPT.)Wewilltrytoknowsomebasicinformationaboutepidemicsinhistory.NameoftheepidemicsTimePlaceJustinian’sPlague(bubonicplague)500-550ADNorthAfrica,theMiddleEast,EuropeTheBlackDeath1330Europe,Asia,Africa,themiddleEastTheGreatFluEpidemic(TheSpanishFlu)1918SimilarastheBlackDeathSARS2022/2022China,Canada,HongKong…Readthetextcarefullyandunderstandrelatedscienceterms.Inthistext,alotofmedicinewordsareinvolved.(1)Topresentquestion3Whatdoestheword“affect”meaninthe5thparagraph?A影響B(tài)效果C感染D死亡(2)Nowreadthetextcarefullyandcompletethesentencesusingmedicinewordsinthetext.Bacteriaand__________(病毒)havebeenaroundsincethebeginningoflifeonEarth.It’simportanttolookatthe__________(傳播)ofdiseasesthroughouthistorytodiscoverthe__________(原因)and__________(影響)ofepidemics.Anotherepidemic__________(開(kāi)始)and__________(傳播)insimilarconditionswastheGreatFlu.It__________(侵襲)neartheendofthefirstWorldWarand__________(持續(xù))afterthewar.Doctorsweren’tsurehowto__________(治療)or__________(預(yù)防)itandsincemostpeoplehadnonatural__________(防御)againstthedisease.Itwasharmfultodoctors.Onehalftoonethirdofthepopulationwas__________(死于)totheBlackDeath.Lesspopulatedareaswerelessseverely__________(感染).SARSepidemicquickly__________(擴(kuò)大)acrosstheglobe.Healthexpertsworkedtogetherto__________(阻止)thevirusinits__________(路徑).It__________(席卷)NorthAfrica,themiddleEastandEurope.(3)Whiledoingthesekindofexercise,explainsomewordssuchas“track”.Trytoknowmorescienceknowledgethroughreadingthetextcarefully.(1)Topresentquestion4TheBlackDeathspreadrapidlyinAsiaandEuropebecause_________A.Itwastheterriblebubonicplaguethatreturned.B.Therewassomanypeopleintheseareas.C.Atthattime,peopledidn’tknowhowtotreatit.D.Peoplesufferedfromthebadclimate,thewarandhunger.Thereweresomanypeopleandtheydidn’thavedailyhealthcare.(2)Toshowapicturetodemonstrate(3)ToanswermorequestionsaboutscienceknowledgeWhydowesayepidemicshavebeenwithusforthousandsofyears?(ppt)WhywasbubonicplagueoneofthekeycausesinthefalloftheRomanEmpire?HowdidSARSspreadfromHongKongtoCanada,VietnamandSingapore?WhydidmanydoctorsandnursesbecomeillwithSARS?Tofigureoutthedevelopmentofthetext(1)Tointroducesequencingexercise(ppt)(2)Topresentquestion5Readthewholetextandmatchthefiveparagraph(A-E)withgaps2,4,7,9and11inthetext(3)Readthetextwithgapstogetthegeneralideaandseehowitdevelops.EpidemicsthroughouthistorytheBlackDeaththeGreatFluSARSJustinian’sPlaguetheBlackDeaththeGreatFluSARSJustinian’sPlague(4)ToanalyzethebeginningandendingwordsofeachparagraphbeginningwordsendingwordsParagraph1history,causesandeffectsofParagraph2(E)historicalaccounts,Justinian’splaguesweptthrough---Paragraph3nowthinkJustinian’sPlague,bubonicplaguecausesofthefalloftheRomanParagraph4(C)bubonicplaguereturnedthedisease(BlackDeath)spreadworldwideParagraph5waslosttotheBlackDeathParagraph6It(theSpanishflu)struckParagraph7(A)It(…)bethemostacuteepidemicinhistory–thefluhasbeenforgottenbyhistoryParagraph8Haven’tforgotten,SARSspreadthediseaseto…Paragraph9(D)Over9months…globalcases…theoutbreakalarmingfor…Paragraph10Noonereallyknewmuch-harmful,hospitalstaff…madeup…Paragraph11(B)Although…SARSquicklyexpand……experts…stopthevirusesinitstrackConclusionRead(Find)thetitlecarefully.Readthetextfastandgetthegeneralidea.Readthetextcarefullyandunderstandrelatedscienceterms.Trytoknowmorescienceknowledgethroughreadingthetextcarefully.Tofigureoutthedevelopmentofthetext.Step4:Readthetextagainandgiveyourownquestionsusingthestrategieswehavelearnt.Showanexampleaboutgivingquestions.QuestionsaboutgeneralideaWhatcanbeinferredfromthetext?Epidemicsdevelopswiththedevelopmentofhumanbeings.Anoldepidemicwillcauseanotherone.Epidemicsmaydisappearonedayduetothedevelopmentofmedicalscience.Epidemicscancausealotofdeaths.ShowtheSswaystoaskquestionsThepurposeofthewriteristo…Thestorytellsusthat…Accordingtothetext,…Itcanbelearnedfromthetextthat…Thebesttitleforthetextwouldbe…Whichofthefollowingstatementistrue(false)?Arrangetheeventinthetextaccordingtothecorrectorder.Afterreadingthetext,weknowthat…Theword“…”inthetextm