2012高中英语 Unit21 Lesson 3 Epidemics Explained教案 北师大版选修7VIP免费

Unit21HumanBiology一教学设计,目的和思路、1.教材内容说明Epidemicsexplained是北师大版教材选修模块7的最后一个单元中的阅读课,介绍瘟疫在历史上的流行和发展,文章生词量大,有一定的教学难度.2.教学目的学生通过阅读课文,了解文中一些科普知识,学会描述瘟疫的特点,掌握阅读科普文章的一些方法3.课堂形式提倡学生自学,以检查预习,合作讨论,你说我猜的形式学习,体现学生学习的主动性,还课堂以学生4.教材内容的加工处理用相关插图,图表等直观的教学形式,让学生能更快理解课文;必要的阅读指导,有利于学生技巧的形成;相关文章的阅读,能扩大学生知识面;一些直观的教具如红丝带和抽象的音乐,希望培养学生的人文素质和高尚情感二教学过程简述1.布置学生预习包括读单词,找出文中数字的含义,简单口头描述各次瘟疫的特点,做好文中的一道涉及段落补全的练习2.课文导入包括简介和听英文歌曲“Tearsinheaven”,讨论死亡的原因,以及有哪些常见的瘟疫3.课文的阅读和学习Step1:阅读标题,预测文章主题,同时找出文中主要瘟疫Step2:讨论数字在文中不同的含义,进一步了解和熟悉课文Step3:进一步阅读文章,了解造成瘟疫的元凶---病毒;描述瘟疫的传播途径,找出各次瘟疫造成的巨大影响;描述和猜测不同的瘟疫Step4:完成段落补全练习,介绍相关方法4.点出阅读技巧5.读一段有关爱滋病对儿童危害的文字,提示我们应该做点什么课堂的延伸和升华Step3:ReadingStrategies:howtoreadasciencearticle1.Readthetitlecarefully(1)Topresentquestion1What’sthemainideaofthetext?A.Newhealththreatsisontherise.B.Alotofepidemicshappenedinhistory.C.SARSusedtobeoutofcontrol,nowpeoplearetryingtostopitonthetrack.D.Weshouldpaymoreattentiontoourhealth.(2)WecanpredictwhatwillhappeninthetextfromthetitleInthistext,someepidemicsinthehistorywillbetalked.(3)GivemoretitlesandasktheSswhatwillbetalkedA.EpidemicsB.EpidemicsandeconomyC.SARSD.ThehistoryoftheBlackDeath2.Readthetextfastandgetthegeneralideaandbasicinformation(1)Topresentquestion2Readthefollowinggraphicandtrytotellwhichepidemicsaredescribed?(ToseethePPT.)(2)Wewilltrytoknowsomebasicinformationaboutepidemicsinhistory.3.ReadthetextcarefullyandunderstandrelatedsciencetermsInthistext,alotofmedicinewordsareinvolved.(1)Topresentquestion3Whatdoestheword“affect”meaninthe5thparagraph?A影响B效果C感染D死亡(2)Nowreadthetextcarefullyandcompletethesentencesusingmedicinewordsinthetext:1.Bacteriaand__________(病毒)havebeenaroundsincethebeginningoflifeonEarth.2.It’simportanttolookatthe__________(传播)ofdiseasesthroughouthistorytodiscoverthe__________(原因)and__________(影响)ofepidemics.3.Anotherepidemic__________(开始)and__________(传播)insimilarconditionswastheGreatFlu.It__________(侵袭)neartheendofthefirstWorldWarand__________(持续)afterthewar.4.Doctorsweren’tsurehowto__________(治疗)or__________(预防)itandsincemostpeoplehadnonatural__________(防御)againstthedisease,itwasharmfultodoctors.5.Onehalftoonethirdofthepopulationwas__________(死于)totheBlackNameoftheepidemicsTimePlaceJustininian’sPlague(bubonicplague)500-550ADNorthAfrica,theMiddleEast,EuropeTheBlackDeath1330Europe,Asia,Africa,themiddleEastTheGreatFluEpidemic(TheSpanishFlu)1918SimilarastheBlackDeathSARS2002/2003China,Canada,HongKong,---Death.Lesspopulatedareaswerelessseverely__________(感染).6.SARSepidemicquickly__________(扩大)acrosstheglobe.Healthexpertsworkedtogetherto__________(阻止)thevirusinits__________(路径).7.It__________(席卷)NorthAfrica,themiddleEastandEurope.(3)Whiledoingthesekindofexercise,explainsomewordssuchas“track”.4.Trytoknowmorescienceknowledgethroughreadingthetextcarefully(1)Topresentquestion4TheBlackDeathspread...