高二英语Astronomy上课学习上课学习教案Word下载.docx

高二英语Astronomy上课学习上课学习教案Word下载.docx

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gravity,float,cheerup,nowthat,breakout,etc

　　2.Astronomicknowledgelikegravityandblackhole.

　　Difficulties:

　　.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.

Verygood!

canyouputtheminrightorder?

　　S7:

Amphibians,Reptiles,Dinosaurs,mammals,BeijingRen.

Doyouknowwhatitwaslikebeforelifeappearedonearth?

　　S8:

Itwasfullofwater,perhaps.

Beforethat,whatwasitlike?

　　S9:

Sorry,Idon’tknow.

Doyouwanttogetmoreinformation?

Todaywe’lllearnsomethingaboutHowLifeBeganontheEarth.TurntoPage25.Let’scometowarmingupfirst.

　　StepIIwarmingup

　　.Readthethreequestions,whilethestudentslistenandfollow.

　　2.GivetheSsseveralminutestodiscussthequestions.

　　3.collectanswersfromthewholeclass.

　　4.checktheanswerswhilediscussing.

I’llreadthethreequestionsforyou.youshouldlistentomecarefully.Forexample,medicine.whensomeonegetsseriousillness,hewillgotothehospital.Thedoctorwillexaminehim.Hewilltakehistemperature,measurehisbloodpressureandgivehimanX-ray,oracT.Forthewholeprocessoftheexamination,whatkindofsciencehasbeenused?

Biology.

chemistry.

Sowecansaymedicinecombinesbiologyandchemistry.whataboutbiochemistryandgeophysics?

Ithinkbiochemistrycombinesbiologyandchemistry.

Geophysicscombinesgeologyandphysics.

whataboutastronomy?

Physics.

mathematics.

Verygood.weshouldknowthatastronomyisamultidisciplinarysubjectandifwewanttodosomeresearchonit,weshouldknowmanysciencesubjectsrelatedtoit.Nowdiscussthesecondquestion:

　　whatdowemeanwhenwesaywearestudyingasubjectscientifically?

orwhat’sthecorrectattitudetowardsscience?

weshouldbeobjective,notsuperstitious.

what’sthecorrectwaytoproveascientificidea?

weshoulddesignexperimentstotestitforseveraltimes.

Thenwecananalyzetheresultsanddrawaconclusionatlast.

Let’ssumuptheanswers.Tostudyasubjectscientifically,wemusttrytobeobjective.Inordertotestouridea,weshoulddesignexperiments,thenanalyzetheresultsanddrawaconclusion.Nowlet’stalkaboutthethirdquestion.

　　whatarethemostimportantskillsweneedtoberealscientists?

　　S10:

weshouldbeverycareful.

　　S11:

Beobjectiveandlogical.

　　S12:

weshouldbewiseenoughtodesignanexperimentandwritethereportsclearly.

　　S13:

weshouldbeabletodrawconclusionsfromtheexperimentsandnotimposeconclusionsonthedata.

Ithinkyouhavedonegreatwork.Fromthediscussionweknowthatit’snoteasytobeascientist.Soyoushouldworkharderifyouwanttobeascientist.

　　StepⅢPre-reading

　　GettheSstodiscussthequestionsonPage25withtheirpartners.ThenasktheSstotelltheirstories.EncouragetheSstotelldifferentstories.Iftheydon’tknowany,tellthemsome.

Nowpleaselookattheslideshow.Anddiscussthesequestionswithyourpartners.ThenI’llasksomestudentstotellustheirstories.Areyouclear?

　　Ss:

yes,Sir/madam.

　　.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?

Pleasegiveanexampleifyouknow.

　　2.Doyouknowwhatascientificideais?

　　AftertheSs’discussion,teachersaysthefollowing.

Nowwho’dliketotellusastory?

Volunteer!

Letmetry.Inchina,weallknowthatPanguseparatestheskyfromtheearth.

canyoudescribethestoryindetails?

Sorry,Ican’trememberclearly.

whocan?

Nobody?

NowI’lltellyou.Lookatthescreen.

　　StepⅣReading

　　Scanning

　　GettheSstoreadthepassagequicklyandaccuratelyandmeanwhilehelptheSstoformagoodhabitofreading.TeachergivestheSsacoupleofminutestolookthroughthewholepassage.TelltheSstoreadthetextsilentlyandthenasksomedetailedquestionsaboutthetextontheslideshowwiththeirpartners.TeachershouldencouragetheSstoexpresstheirideas.

we’regoingtolearnapassageabouthowlifebeganontheearth.Nowlet’slookattheslideshow.Readthetextquicklyandfindanswerstothefollowingquestions.

　　Showthequestionsonthescreen.

　　.whatwasthereontheearthbeforelifecouldbegin?

　　2.whydoscientiststhinktherehasneverbeenlifeonthemoon?

　　3.whydidanimalsfirstappearintheseas?

　　4.whydidgreenplantshelplifetodevelop?

　　5.whyweremammalsdifferentfromotheranimals?

Nowwhocananswerthefirstone?

watervapour,carbondioxide,oxygen,nitrogenandothergases.

whataboutthesecondone?

Becausethereisnowateronthemoon.

whataboutthethirdone?

Becausewaterallowedtheearthtodissolveharmfulgasesintotheoceansandseas