2019-2020年高一英语 Unit16《Scientists at work第三课时》精品教案 旧人教版第一册

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1、2019-2020年高一英语Unit16《Scientistsatwork第三课时》精品教案旧人教版第一册TeachingAims:1.Reviewthewordslearntinthelastperiodandlearntheirdifferentmeaningsbyheart.2.Learntoguessthemeaningofpounds.3.Learntodescribethetwopartsofsomepounds.TeachingImportantPoints:1.Learnandmasterthedifferentmeaningsofsomever

2、bs.2.Learntoguessthemeaningofpoundsandlearntodescribesomepounds.TeachingDifficultPoints:1.Howtodescribethetwopartsofsomepounds.2.Howtoguessthemeaningofthepounds.TeachingMethods:1.Reviewmethodtoconsolidatewhatwe'velearnt.2.Practicetomakethestudentslearnthewayofguessingpoundsanddescrib

3、ingthem.3.Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:1.aslideprojector2.aputerformultimediauseTeachingProcedures:StepⅠ.GreetingsGreetthewholeclassasusual.StepⅡ.RevisionT:InthelastperiodwelearntapassageaboutFranklin'sfamouskiteexperiment.NowI'llaskoneortwostu

4、dentstoretelltheexperiment.Who'dliketo?S1:I'lltry.InJune1752,Franklinwantedtoshowthatlightningandelectricitywerethesame.Hedecidedtodoanexperimentusingakite,sohebuiltastrongkiteofsilk.Whenthefirstthunderstormcame,withhisson'shelp,hetookhiscondensertoashedinthefieldsandflewthekitehigh.

5、Itbegantorain,butnothinghappened.whentheywerewaitingintherain,hesawsomehairsonthestringstoodup.Thestringwasgettingcharged.Hebroughthisfingerclosetothekeyandfeltalightbutveryclearelectricshock.Thatexperimentsucceededandprovedthatlightningandelectricitywerethesame.T:Verygood.NowI'llask

6、anotherstudenttodescribeanexperimentdonebefore.Anyvolunteers?S2:LastyearIdidanexperimentaboutthecharacterofrootsgrowingtowardswater.Letmedescribeit.Iwantedtoshowtherootsofplantsgrowtowardsthedirectionoftheplacewithwater.IthoughtmuchandIfoundthebestwaytoproveit.First,Ifoundtwopotswith

7、thesamesoilandplantsineachofthem.ImarkedthemwithNo.1andNo.2oneachpot.TheninNo.2potIdugaholewhichwasacertaindistancefromtheplant.Iputsomewateraroundtheplantinthefirstpotbutsomewaterintotheholeoftheother.Somedayslater,Itookthemoutofthesoil.Tomysurprise,therootsoftheplantinNo.1growasusu

8、al,whilether