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高中英语Unit4Astronomythescienceofstars教案新课标人教版必修3.doc

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用心爱心专心116号编辑Unit4Astronomy:thescienceofstarsTeachingaims:1.Talkaboutthescienceofstars2.PractisegivinginstructionsLearntousenounclausesasthesubjectLearntowriteanessaytoshowyourproblemsandthewaytoovercomethem.Vocabulary:astronomy,atmosphere,violent,explode,surface,disappointed,gradually,cheer,mass,harmful,presence,intime,prevent…from…dependon,nowthat,getthehangof,breakoutThefirstperiodIntensivereadingStepⅠPresentationT:Hello,everyone!TodaywewillcometoUnit4,Astronomy.BeforethatIhaveaquestion:wheredowecomefrom?Orwecansay:Whoareourancestors?S1:Monkeys!S2:BeijingRenwholivedmanyyearsago.S3:dinosaurs…T:Verygood!Doyouknowwhatitwaslikebeforelifeappearedonearth?S4:Fullofwater…Bs:Idon’tknow.T:Doyouwanttogetmoreinformation?Ss:Yes,wedo.T:Todaywewilllearnsomethingabouthowlifebeganonearth.Turntopage25.Let’scometoWarmingupfirst.StepⅡWarmingupReadthethreequestions,whilethestudentslistenandfollow.Givethestudentsseveralminutestodiscussthequestions.Collectanswersfromtheclass.Checkanswerswhilediscussing.StepⅢPre-readingGetthestudentstodiscussthequestionsonpage25withtheirpartners.Thenaskthestudentstotelltheirstories.Encouragethemtotelldifferentstories,Iftheydon’tknowany,tellthemsome.T:Nowdiscussthesequestionswithyourpartners.ThenIwillasksomeofyoutotellusyourstories.Areyouclear?Ss:Yes.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?Giveanexampleifyouknow.Doyouknowwhatascientificideais?Readsomestoriestothestudents.Panguseparatestheskyfromtheearth;TheBiblicalAccount;India;Japan;Europe;…StepⅣReadingScanningGetthestudentstoreadthepassagequicklyandaccuratelyandmeanwhilehelpthestudentstoformagoodhabitofreading.Givethestudentsacoupleofminutestolookthrouththewholepassage.Tellthemtoreadsilentlyandthenasksomedetailedquestionsaboutthetext.Encouragethemtoexpresstheirideas.T:Wearegoingtolearnapassageabouthowlifebeganontheearth.Nowreadthetextquicklyandthenanswermyquestions.Whatwasthereontheearthbeforelifebegan?Whydoscientistthinktherehasneverbeenlifeonthemoon?Whydoanimalsfirst