高中英语全英教案

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1、高中英语教案I.Teachingfocus1.Realizethedamagecausedtotheworldandfigureoutthereasons.2.Findwaystostoptheearthfrombeingpollutedbydiscussingingroups.II.TeachingapproachesElicitation,MutualInteractionIII.TeachingaidInteractivemultimediateachingIV.TeachingprocessStep1Revision1.Checknote-maki

2、ngEarth:notenoughrain,toomanycattle,cuttingdowntrees,strongwindsAir:smokefromfactories,powerstations,cars,chemicalrain,accidentsatpowerstationsandfactoriesWater:wastefromfactoriesandcitiesStep2Presentation1．Presentaseriesofimagesdepictingthenaturalbeautyoftheearth,thenthepollution

3、.Highlightthesharpcontrastbetweenthem.Guidethestudentstotheconclusion:Theearthusedtobemuchmorebeautifulthannow;theearthisindangerduetotheincreasingpollution.2．Studythemaponthetextbook,thenscanthepassagestofigureoutwhereontheworldatlasthedamagehashappened.Encouragethestudentstogive

4、outtheirpointofviewtowardthepollutionissue.Step3AudiovisualLearningThestudentswatchavideoonthetext,thendothefollowingtrueorfalsequestions.1.Manypartsoftheworldwithlargepopulationandplentyofcropshavebecomedeserts.T2.Landmaybecomepooriffarmersdonotlimitthenumbersoftheircattle.T3.Goo

5、dsoilisgraduallylostthesedaysastreesarebeingcutdown.T4.Airpollutionandwaterpollutionarethetwocausesoftheproblemthatmanypartsoftheworldhavebecomedeserts.F5.Chemicalsinthesmokefrompowerstationscantravelhundredsofmilesinthewindbeforefallingdowntothegroundintherain.F6.Afterabadacciden

6、tatanuclearpowerstation,50%ofthetreesinGermanyweredamaged.F7.ThewritertoexplainhowwaterispollutedusestheexamplesoftheaccidentsinbothIndiaandRussian.F8.Onceoceansarepolluted,theyarenotabletocleanthemselves.FStep4IntensiveReadingReadthepassagesagainforsomedetailedinformation1.Tosays

7、omethingaboutthedamagethatiscausedtotheworldbypollution,usingtheinformationfromthetext.Trytopresentpossiblewaystohelpsolvetheproblems.PhenomenaCausesSuggestionsEARTHTheareaofdesertisgrowingeveryyear.Cattleeatgrass.Limitthenumberofthecattle.Goodsoilisgraduallylost.Treesbeingcutdown

8、;strongwindsblowingthevaluablesoi