Unit4Astronomy:thescienceofthestarsTeachinggoals教学目标1Targetlanguage目标语言a.重点词汇和短语force,gradually,float,mass,cheerup,nowthat,breakoutb.重点句子：Whenwegetclosertothemoon,weshallfeelitsgravitypullingusbutitwillnotbeasstrongapullastheearth’s.P30Walkingdoesneedabitofpracticenowthatgravityhaschanged.P31Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshiptheearth’sgravityincreased.P312Abilitygoals能力目标aDiscussthethreewaysinwhichgravitychangedonthemoon.andsomeinformationaboutblackholes.b.Discussthequestionsaboutthepassage:Howdidgravitychangeonthemoon?Whatdoesablackholelooklike?Whatwillhappenifanobjectisneartheblackhole?TeachtheSstoreadpassageswithfeeling.3Learningabilitygoals学能目标EnabletheSstogettoknowaboutgravityandblackholes.Teachingimportantpoints教学重点Talkaboutgravityandblackholes.Teachingdifficultpoints教学难点a.Discusstheanswerstothequestionsb.TeachtheSstoreadthepassagewithfeeling,payingattentiontopronunciationandintonation.Teachingmethods教学方法a.Fastreadingb.Dealingwithcomprehensionquestionsc.DiscussionTeachingaids教具准备Aprojector,acomputer,arecorder用心爱心专心Teachingprocedures&ways教学过程与方式StepIRevisionCheckhomeworkT:Lastclasswehavelearneddifferentideasaboutgravity,whatqualityanastronautshouldhaveandsomeequipmentonaspacesuit.Nowanswerthequestion:Whatneedstobeanastronaut?S:Anastronautshouldhavegoodhealth,excellentdegree,manyyears’training,rightheightandweight.Theyalsoshouldbecalm,firm,patient,matureandhard-working.Theymustbeabletoadapttotheharshnessoflifeinspace.StepIIReading(Page30)1.Askthestudentstoreadthepassagequicklyandfillintheform.Thenchecktheanswer.T:Inlastlesson,wehavelearnedsomeinformationaboutgravity.Todaywe’llknowgravityindetails.Readthepassageandfillintheform.1lefttheearth2inspace3onthemoonThewaygravitychangedThegravitybecameverystrongThegravitydisappearedItbecameverylight.,TheweightchangedHebecameveryheavy.Hehadnoweightandcouldfloataroundlikeafeather.Hewasaboutone-sixthofhisweightontheearth..2.Listentothetapeandimitatehetape.Thenpracticereadingaloudthedialoguewithfeeling.3.AsktwoorthreepairsofSstoreadthepassagewithfeeling.StepIIIReadingTask(Page66)Thisreadingpassageisaboutblackholes..Afterthefirstreading,lettheSsanswersomequestions.Showthequestionsonthescreen.Then,letthemtalkabouttheformonpage67afterreadingthetextagain.T:Lasttimewe’velearntsomethingaboutblackholesinListening.DoyourememberStephenHawking’sideaaboutit?S:Hethinksthatblackholescanbotheatandspitobjectsout.T:Verygood.Nowwe’llreadthepassageaboutblackholes.TurntoPage66,readitquicklyandtrytofindtheanswerstothequestions.Questions:1.Canablackholebeseen?Howdoyouknowit’sablackhole?2.Whathappenedtothespaceshipfromthebeginningtotheend?Checktheanswerwiththewholeclass.Answers:1.No,itcan’tbeseen.Youcanseethingsdisappearintowhatappearstobeanempty用心爱心专心space.2.Atfirstthelightsonthespaceshipwentoutandthecomputerstoppedworking.Thenthespaceshipjumpedandbegantomovearoundtheedgeoftheoutsideofthehole.Asthespaceshipmovedaroundthehole,itbegantogofasterandfaster.Butthenthespaceshipjumpedagain,anditmovedsidewaysfromtheblackhole.Itbegantoincreaseitsspeeduntilitseemedtobegoingasfastaslight.Atlastthespaceshipsloweddownandthecomputerstartedworkingagain.T:NowtalkabouttheformonPage67withyourpartners.(Afewminuteslater,)T:Allright.We’lltalkabouttheanswers.Askseveralstudentsto...
