Unit4Astronomy:thescienceofthestarsTeachinggoals教学目标1.Targetlanguage目标语言a重点词汇和短语astronomy,atmosphere,system,violent,solid,explode,carbon,dioxide,oxygen,surface,planet,harmful,development,spread,method,depend,solarsystem,intime,prevent…from,dependonb重点句子1.Whatitwastobecomewasamysteryuntilthedustbegantoslowlycombineintoaballmovingaroundthesun.P252.It’sexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapour,carbondioxide,oxygen,nitrogenandothergases,whichweretomaketheearth’satmosphere.P253.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.P254.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.P262.Abilitygoals能力目标a.EnableSstotalkaboutthescienceofthestars,thedevelopmentoflifeandspacetravelandgravityWheredowecomefrom?Howdidtheuniversebegin?Whyistheuniversethewayitwas?Howwillitend?Howmuchdoyouknowaboutuniverse?Doyouwanttohaveaspacetravel?Doyouknowsomethingaboutgravity?b.Understandthetextandanswerthefollowingquestions:用心爱心专心1.Whatwasthereontheearthbeforelifecouldbegin?2.Whydoscientiststhinktherehasneverbeenlifeonthemoon?3.Whydidanimalsfirstappearintheseas?4.Whydidgreenplantshelplifetodevelop?5.Whyweremammalsdifferentfromotheranimals?c.EnabletheSstounderstandthedetailsaboutthepassage,choosingthecorrectansweraccordingtothetextandputtheorderofdevelopmentoflifeintoatimelineandanswerquestions.d.Retellthepassageusingkeysentences.3.Learningabilitygoals学能目标EnableSslearnhowtotalkaboutthebeginningoflifeontheearth.Teachingimportantpoints教学重点a.Talkaboutthebeginningoflifeontheearth.Whydidanimalsfirstappearintheseas?Whydidgreenplantshelplifetodevelop?b.DiscusstheorderofdevelopmentoflifeTeachingdifficultpoints教学难点a.Understandthebeginningoflifeontheearth.b.Discussthequestions:Whatwillourfuturebeiftheearthmaybecometoohotforthelivesonit?Whyarehumansthecleverestanimalsontheearth?Teachingmethods教学方法a.Skimmingandscanningb.Asking-and-answeringactivitytochecktheSs’understandingofthetext.c.Individual,pairorgroupworktofinisheachtask.d.Discussion.Teachingaids教具准备Arecorder,acomputer,aprojector用心爱心专心Teachingprocedures&ways教学过程与方式StepIPresentationT:Hello,everyone!Todaywe’llcometoUnit4Astronomy.BeforethatIhaveaquestion:Wheredowecomefrom?Orwecansay:Whoareourancestors?S1:Monkeys!S2:BeijingRenwholivedmanyyearsago.S3:Reptiles.S4:Mammals.S5:Amphibians.S6:Dinosaurs.T:Verygood!Canyouputtheminrightorder?S7:Amphibians,Reptiles,Dinosaurs,Mammals,BeijingRenT:Doyouknowwhatitwaslikebeforelifeappearedonearth?S8:Itwasfullofwater,perhaps.T:Beforethat,whatwasitlike?S9:Sorry,Idon’tknow.T:Doyouwanttogetmoreinformation?Todaywe’lllearnsomethingaboutHowLifeBeganontheEarth.TurntoPage25.Let’scometoWarmingupfirst.StepIIWarmingup1.Readthethreequestions,whilethestudentslistenandfollow.2.Givethemsometimetodiscussthequestions.3.Collectanswersfromthewholeclass.4.Checktheanswerswhilediscuss..用心爱心专心T:I’llreadthethreequestionsforyou.Youshouldlistentomecarefully.(Ifstudentsdon’tknowhowtodiscuss,showthemanexample.)Forexample,medicine.Whensomeonegetsveryseriousillness,hewillgotothehospital.Thedoctorwillexaminehim.Hewilltakehistemperature,measurehisbloodpressureandgivehimanX-ray,oraCT.Forthewholeprocessoftheexamination,whatkindofsciencehasbeenused?S1:Bi...
