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1、Unit 4 Astronomy: the science of stars教案Teachingaims:1.Talkaboutthescienceofstars2.PractisegivinginstructionsTeachingdifficulties:1.Learntousenounclausesasthesubject2.Learntowriteanessaytoshowyourproblemsandthewaytoovercomethem.3.Vocabulary:astronomy,atmosphe
2、re,violent,explode,surface,disappointed,gradually,cheer,mass,harmful,presence,intime,prevent…from…dependon,nowthat,getthehangof,breakoutTeachingprocedures:ThefirstperiodIntensivereadingStepⅠPresentationT:Hello,everyone!TodaywewillcometoUnit4,Astronomy.Beforet
3、hatIhaveaquestion:wheredowecomefrom?Orwecansay:Whoareourancestors?S1:Monkeys!S2:BeijingRenwholivedmanyyearsago.S3:dinosaurs…T:Verygood!Doyouknowwhatitwaslikebeforelifeappearedonearth?S4:Fullofwater…Bs:Idon’tknow.T:Doyouwanttogetmoreinformation?Ss:Yes,wedo.T:T
4、odaywewilllearnsomethingabouthowlifebeganonearth.Turntopage25.Let’scometoWarmingupfirst.StepⅡWarmingup1.Readthethreequestions,whilethestudentslistenandfollow.2.Givethestudentsseveralminutestodiscussthequestions.3.Collectanswersfromtheclass.4.Checkanswerswhile
5、discussing.StepⅢPre-readingGetthestudentstodiscussthequestionsonpage25withtheirpartners.Thenaskthestudentstotelltheirstories.Encouragethemtotelldifferentstories,Iftheydon’tknowany,tellthemsome.T:Nowdiscussthesequestionswithyourpartners.ThenIwillasksomeofyouto
6、tellusyourstories.Areyouclear?Ss:Yes.a.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?Giveanexampleifyouknow.b.Doyouknowwhatascientificideais?Readsomestoriestothestudents.Panguseparatestheskyfromtheearth;TheBiblicalAccount;India;Ja
7、pan;Europe;…StepⅣReading1.ScanningGetthestudentstoreadthepassagequicklyandaccuratelyandmeanwhilehelpthestudentstoformagoodhabitofreading.Givethestudentsacoupleofminutestolookthrouththewholepassage.Tellthemtoreadsilentlyandthenasksomedetailedquestionsaboutthet
8、ext.Encouragethemtoexpresstheirideas.T:Wearegoingtolearnapassageabouthowlifebeganontheearth.Nowreadthetextquicklyandthenanswermyquestions.a.Whatwasthereontheearthbeforelifebegan?b.Whydosc
