scientists at work教案2

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1、Scientistsatwork教案2教学示例（二）　　ITeahingais:　　Talabutsieneandsientists　　learnhtgiveinstrutins　　Siilardialguepresentatinithnerdsandexpressinsusedithin　　IITeahingaids:tapererder,pitures,slides　　Step1Pre-reading　　1TasSs:Dunthenaesfsefaussientists?　　hatarethefausfr?　　Tshsepituresandas:Dunthesientists?hatare

2、thefausfr?　　　　　　　AlbertEinstein爱因斯坦GalileGalilei伽利略arieurie居里夫人　　　　　　StephenHaingharlesDarin达尔uanLngping袁隆平　　史蒂芬•威廉姆•霍金　　2Grupr　　letSsrinpairs,andnaesesientistshadeaniprtantdisveriesintheeighteenthandnineteenthenturies(slidesh)　　StepIIReading　　1SiingletSsreadthepassagearefullandansertheq

3、uestin:　　hdidBenainFranlindthisexperientiththeite?　　(Heantedtsh/prvethatlightningandeletriitarethesaething)　　2SippingletSsreadthepassageagain,andfinishthefllingexerises:(slidesh)True(T)rfalse(F)1In172sientistsalreadnehateletriitis(T)2Franlinashelpedbafriendtdtheexperient(F)3Franlinadetheitefsilbeaus

4、eetsildesntnduteletriit(F)4Andenserasusedintheexperienttstreeletriit(T)Theetiedtthestringasputintthedrtstptheitefrflingaa(F)　　3ExtrativereadingletSsreadthepassagearefull,andanserthefllingthequestins:　　ahisitbettertaetheitefsilthanfpaper?　　(Asliiteilllastlngerinbadeatherthanapaperite)　　bDuthinFranlin

5、’sexperientasdangerus?Explain　　(esFranlin’sexperientasverdangerusbeauseifsethingentrngheuldbeilledbthelightning)　　4letSsfinduttheesftheexerisesaftertheirreading(slidesh)Ai:Tshthatlightningandeletriitarethesaeaterials:Sedenstis,apieefsil,serpe,aversharppieefetal,asilribbn,ae,andenser,asallshed,athund

6、erstrithlightningResults:Theeletriitstredinthendenseranbeusedtdtherexperients,hihprvesthatlightningandeletriitarethesae　　4listeningplathetapeandletSsfll,paingattentinttheintnatin　　StepIIIDisussin　　Tsas:Inrdertndutsieneexperients,sientistsustftenfindpratialslutinstvereprbles,aelargesalenaturalphenena

7、anageableandthinabuttheirnsafet　　LetSsringrupanddisusshFranlinusedhisreativittverevariusprblesfrhisexperient　　1eanntgandlfrlightning,sFranlinhastfindaataelightningethi:heattratedlightningusingaite　　2A