高二英语Astronomy上课学习上课学习教案Word下载.docx

1、gravity,float,cheerup,nowthat,breakout,etc2.Astronomicknowledgelikegravityandblackhole.Difficulties:.Helpthestudentstounderstandthedevelopmentofgravity.2.Helpthestudentstoknowhowgravityinfluencesus.Teachingmethods:skimming,scanning,discussing.Teachingaids:ataperecorder,aprojectorandacomputer.Teachin

2、gprocedures:ThefirstperiodreadingStepIPresentationT:Hello,everyone!TodaywellcometoUnit4Astronomy.BeforethatIhaveaquestion:wheredowecomefrom?orwecansay:whoareourancestors?S1:monkeys!S2:BeijingRenwholivedmanyyearsago.S3:Reptiles.S4:mammals.S5:Amphibians.S6:Dinosaurs.Verygood!canyouputtheminrightorder?

3、S7:Amphibians,Reptiles,Dinosaurs,mammals,BeijingRen.Doyouknowwhatitwaslikebeforelifeappearedonearth?S8:Itwasfullofwater,perhaps.Beforethat,whatwasitlike?S9:Sorry,Idontknow.Doyouwanttogetmoreinformation?TodaywelllearnsomethingaboutHowLifeBeganontheEarth.TurntoPage25.Letscometowarmingupfirst.StepIIwar

4、mingup.Readthethreequestions,whilethestudentslistenandfollow.2.GivetheSsseveralminutestodiscussthequestions.3.collectanswersfromthewholeclass.4.checktheanswerswhilediscussing.Illreadthethreequestionsforyou.youshouldlistentomecarefully.Forexample,medicine.whensomeonegetsseriousillness,hewillgototheho

5、spital.Thedoctorwillexaminehim.Hewilltakehistemperature,measurehisbloodpressureandgivehimanX-ray,oracT.Forthewholeprocessoftheexamination,whatkindofsciencehasbeenused?Biology.chemistry.Sowecansaymedicinecombinesbiologyandchemistry.whataboutbiochemistryandgeophysics?Ithinkbiochemistrycombinesbiologya

6、ndchemistry.Geophysicscombinesgeologyandphysics.whataboutastronomy?Physics.mathematics.Verygood.weshouldknowthatastronomyisamultidisciplinarysubjectandifwewanttodosomeresearchonit,weshouldknowmanysciencesubjectsrelatedtoit.Nowdiscussthesecondquestion:whatdowemeanwhenwesaywearestudyingasubjectscienti

7、fically?orwhatsthecorrectattitudetowardsscience?weshouldbeobjective,notsuperstitious.whatsthecorrectwaytoproveascientificidea?weshoulddesignexperimentstotestitforseveraltimes.Thenwecananalyzetheresultsanddrawaconclusionatlast.Letssumuptheanswers.Tostudyasubjectscientifically,wemusttrytobeobjective.I

8、nordertotestouridea,weshoulddesignexperiments,thenanalyzetheresultsanddrawaconclusion.Nowletstalkaboutthethirdquestion.whatarethemostimportantskillsweneedtoberealscientists?S10:weshouldbeverycareful.S11:Beobjectiveandlogical.S12:weshouldbewiseenoughtodesignanexperimentandwritethereportsclearly.S13:w

9、eshouldbeabletodrawconclusionsfromtheexperimentsandnotimposeconclusionsonthedata.Ithinkyouhavedonegreatwork.Fromthediscussionweknowthatitsnoteasytobeascientist.Soyoushouldworkharderifyouwanttobeascientist.StepPre-readingGettheSstodiscussthequestionsonPage25withtheirpartners.ThenasktheSstotelltheirst

10、ories.EncouragetheSstotelldifferentstories.Iftheydontknowany,tellthemsome.Nowpleaselookattheslideshow.Anddiscussthesequestionswithyourpartners.ThenIllasksomestudentstotellustheirstories.Areyouclear?Ss:yes,Sir/madam.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?Pleasegive

11、anexampleifyouknow.2.Doyouknowwhatascientificideais?AftertheSsdiscussion,teachersaysthefollowing.Nowwhodliketotellusastory?Volunteer!Letmetry.Inchina,weallknowthatPanguseparatestheskyfromtheearth.canyoudescribethestoryindetails?Sorry,Icantrememberclearly.whocan?Nobody?NowIlltellyou.Lookatthescreen.S

12、tepReadingScanningGettheSstoreadthepassagequicklyandaccuratelyandmeanwhilehelptheSstoformagoodhabitofreading.TeachergivestheSsacoupleofminutestolookthroughthewholepassage.TelltheSstoreadthetextsilentlyandthenasksomedetailedquestionsaboutthetextontheslideshowwiththeirpartners.Teachershouldencourageth

13、eSstoexpresstheirideas.weregoingtolearnapassageabouthowlifebeganontheearth.Nowletslookattheslideshow.Readthetextquicklyandfindanswerstothefollowingquestions.Showthequestionsonthescreen.whatwasthereontheearthbeforelifecouldbegin?2.whydoscientiststhinktherehasneverbeenlifeonthemoon?3.whydidanimalsfirs

14、tappearintheseas?4.whydidgreenplantshelplifetodevelop?5.whyweremammalsdifferentfromotheranimals?Nowwhocananswerthefirstone?watervapour,carbondioxide,oxygen,nitrogenandothergases.whataboutthesecondone?Becausethereisnowateronthemoon.whataboutthethirdone?Becausewaterallowedtheearthtodissolveharmfulgasesintotheoceansandseas