Unit 4 Astronomy教案.docx

Unit 4 Astronomy教案.docx

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Unit4Astronomy教案

Unit4Astronomy:

thescienceofthestars

Ｉ．单元教学目标

技能目标SkillGoals

Talkaboutthescienceofthestars,thedevelopmentoflifeandspacetravelandgravity.

Practicegivinginstructions.

Practicetalkingabutproblemsinstudyorlife.

LearntouseNounClausesasthesubject.

Learntowriteanessaytoshowyourproblemsandthewaytoovercomethem.

词汇

1四会词汇

astronomy,system,religiontheoryatombillionglobeviolentcarbonatmosphereunlikefundamentalharmfulacidchainmultiplyoxygenexistthusdioxidepuzzlebiologybiologistgravitysatellitegentlephysicistclimatecrashspaceshippullfloatmass

2认读词汇

astronomer,biochemistry,geophysics,solar,BigBang,vapor,nitrogen,dissolve,amphibian,reptile,generally,mammal,global,comet,IssacNewton,AlbertEinstein,StephenHawking,lessen,weightlessly,cabin,exhaust,exclaim

3词组

solarsystem,intime,layeggs,givebirthto,inone’sturn,carbondioxide,prevent…from,blockout,cheerup,nowthat,breakout,watchout

语法

NounClausesasthesubject

NounClausesasthesubjectisalsocalledtheSubjectClause.ThatmeansaNounClauseservesasSubjectinthesentence.ThewordswhichareusedinthisNounClauseare:

that,whether,who,what,which,when,where,how,why,etc.

TheFirstPeriodIntensiveReading

Teachinggoals教学目标

1.Targetlanguage目标语言

重点词语：

theory,atom,billion,globe,violent,carbon,atmosphere,fundamental,harmful,acid,multiply,oxygen,exist,prevent,dioxide

2.Abilitygoals能力目标

a.EnableSstotalkaboutthescienceofthestars,thedevelopmentoflifeandspacetravelandgravity.

b.Understandthetextandanswerthefollowingquestions:

c.EnabletheSstounderstandthedetailsaboutthepassage,choosingthecorrectansweraccordingtothetextandputtheorderofdevelopmentoflifeintoatimelineandanswerquestions.

d.Retellthepassageusingkeysentences.

3.Learningabilitygoals学能目标

EnableSstolearnhowtotalkaboutthebeginningoflifeontheearth.

Teachingimportantpoints教学重点

a.Talkaboutthebeginningoflifeontheearth.

b.Discusstheorderofdevelopmentoflife.

Teachingdifficultpoints教学难点

a.Understandthebeginningoflifeontheearth.

b.Discussthequestions:

Whatwillourfuturebeiftheearthmaybecometoohotforthelivesonit?

Whyarehumansthecleverestanimalsontheearth?

Teachingmethods教学方法

a.Skimmingandscanning.

b.Asking-and-answeringactivitytochecktheSs’understandingofthetext.

c.Individual,pairorgroupworktofinisheachtask.

d.Discussion.

Teachingaids教具准备

Arecorder,acomputerandaprojector.

Teachingprocedures&ways教学过程与方式

StepIPresentation

T:

Hello,everyone!

Todaywe’llcometoUnit4Astronomy.BeforethatIhaveaquestion:

Wheredowecomefrom?

Orwecansay:

Whoareourancestors?

Student:

.……

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:

Whataboutastronomy?

S5:

Physics.

S6:

Mathematics.

T:

Verygood.Weshouldknowthatastronomyisamultidisciplinarysubjectandifwewanttodosomeresearchonit,weshouldknowmanysciencesubjectsrelatedtoit.Nowdiscussthesecondquestion:

Whatdowemeanwhenwesaywearestudyingasubjectscientifically?

Orwhat’sthecorrectattitudetowardsscience?

S7:

Weshouldbeobjective,notsuperstitious.

T:

What’sthecorrectwaytoproveascientificidea?

S8:

Weshoulddesignexperimentstotestitforseveraltimes.

S9:

Thenwecananalyzetheresultsanddrawaconclusionatlast.

T:

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

Whatarethemostimportantskillsweneedtoberealscientists?

S10:

Weshouldbeverycareful.

S11:

Beobjectiveandlogical.

S12:

Weshouldbewiseenoughtodesignanexperimentandwritethereportsclearly.

S13:

Weshouldbeabletodrawconclusionsfromtheexperimentsandnotimposeconclusionsonthedata.

T:

Ithinkyouhavedonegreatwork.Fromthediscussionweknowthatit’snoteasytobeascientist.Soyoushouldworkharderifyouwanttobeascientist.

StepⅢPre-reading

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

T:

Nowpleaselookattheslideshow.Anddiscussthesequestionswithyourpartners.ThenI’llasksomestudentstotellustheirstories.Areyouclear?

Ss:

Yes,Sir/Madam.

1.Doyouknoweachreligionorculturehasitsownideasaboutthebeginningoftheuniverse?

Pleasegiveanexampleifyouknow.

2.Doyouknowwhatascientificideais?

AftertheSs’discussion,teachersaysthefollowing.

T:

Nowwho’dliketotellusastory?

Volunteer!

S1:

Letmetry.InChina,weallknowthatPanguseparatestheskyfromtheearth.

T:

Canyoudescribethestoryindetails?

S1:

Sorry,Ican’trememberclearly.

T:

Whocan?

Nobody?

NowI’lltellyou.Lookatthescreen.

Panguseparatestheskyfromtheearth

Theskyandtheearthwereatfirstoneblurredentitylikeanegg.Panguwasbornintoit.Theseparationoftheskyandtheearthtook18,000years-theYangwhichwaslightandpurerosetobecomethesky,andtheYinwhichwasheavyandmurkysanktoformtheearth.BetweenthemwasPangu,whowentthroughninechangeseveryday,hiswisdom,greaterthanthatoftheskyandhisabilitygreaterthanthatoftheearth.Everydaytheskyrosetenfeethigher,theearthbecametenfeetthicker,andPangugrewtenfeettaller.Another18,000yearspassed,andtherewasanextremelyhighsky,anextremelythickearth,andanextremelytallPangu.ThencametheThreeEmperors（theEmperoroftheSky,theEmperoroftheEarth,andtheEmperoroftheMen.）

Sothesenumberscameintoexistenceandevolvelikethis.Thenumberbeginswithone,becomesestablishedatthree,iscompletedatfive,prospersatseven,andendsinnine.Sotheskyisninetythousandlifromtheearth.

Otherlegendsaboutthebeginningofuniverse

TheBiblicalAccount

“InthebeginningGodcreatedtheheavensandtheearth.Theearthwasformlessandempty,darknesswasoverthesurfaceofthedeep,andthespiritofGodwashoveringoverthewaters.AndGodsaid....”

Day1:

GodspokeandseparatedlightfromdarknesscreatingDayandNight

Day2:

Godspokeandseparatedthewatercreatingskyandocean

Day3:

Godspokeandcreateddryland

Day4:

Godspokeandcreatedthesun,moonandstars

Day5:

Godspokeandcreatedlivingcreaturesintheairandsea

Day6:

Godspokeandcreatedthelandanimalsandman

Day7:

GodrestedandblessedthisdaycallingitHoly

StepⅣReading

Readthepassagecarefullyandanalyzeitsstructure.Writedownthemainideaforeachparagraph.

Para.1:

Awidelyacceptedtheoryabouttheformationoftheuniverse

Para2:

Theformationoftheearth

Para.3:

Theimportanceofwaterforlife

Para.4:

Thedevelopmentofplantsandanimalsontheearth

Para.5:

Thearrivalofhumansandtheirimpactontheearth

Readingandanswerthequestions.

1.Whywastheearthdifferentfromotherplanets?

Thewaterremained.

2.Whywaslifeabletodevelopontheearthbutnotonotherplanets?

Thewaterstayedontheearthbutnotonotherplanets.

3.Whywasitnecessaryforplantstogrowbeforeanimals?

Plantsprovidedoxygenforanimalstobreathe.

4.Whatproblemiscausedbyhumanbeings?

Theycauseglobalwarming.

5.Whyisitwronginfilmsandstoriestoshowdinosaursandpeopletogether?

Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.

6.Whydoyouthinkthathumansarethecleverestanimalsontheearth?

Theyarethecleverestanimalsbecausetheyhavelargerbrainsthananyothercreatureontheearthsofar.

7.Whyisitwronginfilmsandstoriestoshowdinosaursandpeopletogether?

Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.

8.Thereusedtobenineplanetsinthesolarsystem.Recentlyscientistshavedecidedthatoneofthemcannolongerbeconsideredaplanet.Doyouknowthenameofthatplanet?

Doyouknowwhytheyremovedit?

Pluto.Scientistsnowthinkitistoosmalltobecalledaplanet.

Analyzehowlifebeganonearth.

Listening

Listentothetapeforthestudentstofollowandhavefurtherunderstandingofthepassage.

T:

Readafterthetape,thenanswermesomequestionswithyourbookclosed.

Pl