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1、Unit4Astronomy:thescienceofthestarsPart1TeachingDesign第一部分教学设计Period1Asamplelessonplanforreading(HOWLIFEBEGANONTHEEARTH)IntroductionInthisperiod,afterthewarmingup,studentswillfirstbeguidedtotalkandshare.Thentheywillbehelpedtoreadanexposition(说明文)entitledHOWLIFEBEGANONTHE
2、EARTH.Thenthestudentsmaybeaskedtolistenandreadaloud,readandunderline,readandunderstanddifficultsentences,readandtransferinformation,readandtranslate,readtodecideonthetypeofwritingandsummaryofthetextandfinallyreadtodrawatreediagramofthetextandretellthestorywiththehelpofth
3、ediagram.Theperiodwillendinstudentshavingadiscussion—HowDidtheUniverseBegin?ObjectivesTohelpstudentsunderstandthetext’sformsandcontentsandlearnaboutfestivalAstronomyTohelpstudentscommunicateonthetopicinfocuswiththewords,expressionsandstructureslearnedinthisunitFocusWords
4、dissolve,exist,puzzle,crash,pull,float,exhaustExpressionsintime,layeggs,givebirthto,blockout,cheerup,nowthat,breakout,watchoutPatterns1.Itexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapor,carbondioxide,oxygen,nitrogenandothergases,whichweretomaketheeart
5、h’satmosphere.2.Nobodyknewthatitwasgoingtobedifferentfromotherplanetsgoingroundthesun.3.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.4.Thisencouragedthedevelopmentofearlyshellfishandallsortsoffish.5.Theyproducedyou
6、nggenerallybylayingeggs.6.Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.7.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.AidsMultimediafacilities,tape-recorder,ph
7、otos,diagramsProceduresI.WarmingupbylearningvocabularyGoodmorning,class!Today,wearegoingtotakeUnit4Astronomy:thescienceofthestars.Beforewereadthetext,let’sturntopage99andgetfamiliarizedwiththevocabularyfirst.Payattentiontothemakingoftheword.Studytheprefixes,rootsandsuffi
8、xesinthewords.II.Pre-reading1.LookingandsayingHaveyoueverwonderedhowtheuniversebegan?WellI'msureyoumayh