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1、Unit4Astronomythescienceofthestars教案1(HOWLIFEBEGANONTHEEARTH)IntroductionInthisperiod,afterthewarmingup,studentswillfirstbeguidedtoimagineandsharetheirviewsabouttheevolutionofhuman.TheywillthenbehelpedtoreadatextentitledHOWLIFEBEGAINONTEHEARTH.Examplesof"WarmingUp"designsarepr
2、esentedinthisbookforteachers'reference.Computerandoverheadprojectormaybeusedtoaidtheteachingandlearning.ObjectivesnToTalkaboutthescienceofstarsnTopracticegivinginstructionsnTolearntousenounclausesasthesubjectFocusWordstheory,violent,atmosphere,unlike,fundamental,harmful,multiply,exis
3、tExpressionsintime,givebirthto,inone'sreturnPatternsTheyproducedyounggenerallybylayingeggs.Thustheyhave,intheirreturn,becomethemostimportantanimalsontheplanet.AidsMultimediafacilities,tape-recorder,photos,diagramsProcedureI.WarmingupGoodmorning,class!Today,waregoingtotakeUnit4Astrono
4、my:thescienceofthestars.Beforewereadthetext,let'sturntopage97andgetfamiliarizedwiththevocabularyfirst.Payattentiontothemakingoftheword.Studytheprefixes,rootsandsuffixesinthewords.Playagametolearnthenamesandpositionsoftheplanets:VenusisnexttoMercury.Earthisthethirdplanet.Marsisbetween
5、EarthandJupiter.Neptuneisthefurthestplanetfromthesun.SaturnisbetweenUranusandJupiter.Mercuryisclosesttothesun.II.Pre-reading1.LookingandsayingHaveyoueverwonderedhowtheuniversebegan?WellI'msureyoumayhavemanyanswerstothisquestion,butIhaveonethatperhaps,youmaynothaveheardofyet.Iwillbegi
6、vingyoumytheoryonthissubject.Nowlookatthescreenandlistentometellingyousomethingexciting.科学家透露：宇宙可能有两个我们的宇宙和一个“隐藏的”宇宙共同“镶嵌”在“五维空间”中。在我们的宇宙早期，这两个宇宙发生了一次相撞事故，相撞产生的能量生成了我们宇宙中的物质和能量。 2.TalkingandsharingDoyouknowhowtheuniversebegan?Inthe1920sinCalifornia,astronomerEdwinHubbleobserveddis
7、tantgalaxiesusinganextremelypowerfultelescope.Hemadetwomind-boggling(unbelievable)discoveries.First,HubblefiguredoutthattheMilkyWayisn'ttheonlygalaxy.Herealizedthatfaint,cloud-likeobjectsinthenightskyareactuallyothergalaxiesfar,faraway.TheMilkyWayisjustoneofbillionsofgalaxies.Second,
8、Hubblediscov
