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高一英语必修3Unit4AstronomyTheScienceOfTheStars.doc

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用心爱心专心 高一英语必修3Unit4Astronomy:TheScienceOfTheStars Teachingaims: 1.Enablestudentstoimprovetheirlisteningskillsandreadingability. 2.Enablestudentstounderstandthedevelopmentofgravityandhowgravityaffectsusindifferenttimesandplaces. 3.Arousestudents’interesttosearchforthemysteryofspace. Emphasis: 1.Wordsandexpressions:gravity,float,cheerup,nowthat,breakout,etc 2.Astronomicknowledgelikegravityandblackhole. Difficulties: 1.Helpthestudentstounderstandthedevelopmentofgravity. 2.Helpthestudentstoknowhowgravityinfluencesus. Teachingmethods:skimming,scanning,discussing. Teachingaids:ataperecorder,aprojectorandacomputer. Teachingprocedures: Thefirstperiodreading StepIPresentation T: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,BeijingRen. T:Doyouknowwhatitwaslikebeforelifeappearedonearth? S8:Itwasfullofwater,perhaps. T:Beforethat,whatwasitlike? S9:Sorry,Idon’tknow. T:Doyouwanttogetmoreinformation?Todaywe’lllearnsomethingaboutHowLifeBeganontheEarth.TurntoPage25.Let’scometoWarmingupfirst. StepIIWarmingup 1.Readthethreequestions,whilethestudentslistenandfollow. 2.GivetheSsseveralminutestodiscussthequestions. 3.Collectanswersfromthewholeclass. 4.Checktheanswerswhilediscussing. T:I’llreadthethreequestionsforyou.Youshouldlistentomecarefully.(Ifstudentsdon’tknowhowtodiscuss,showthemanexample.)Forexample,medicine.Whensomeonegetsseriousillness,hewillgotothehospital.Thedoctorwillexaminehim.Hewilltakehistemperature,measurehisbloodpressureandgivehimanX-ray,oraCT.Forthewholeprocessoftheexamination,whatkindofsciencehasbeenused? S1:Biology. S2:Chemistry. T:Sowecansaymedicinecombinesbiologyandchemistry.Whataboutbiochemistryandgeophysics? S3:Ithinkbiochemistrycombinesbiologyandchemistry. S4:Geophysicscombinesgeologyandphysics. T:Whatabo