[推荐精选]Unit 4 Astronomy- the science of stars上课学习上课学习教案

Unit 4 Astronomy: the science of

stars教案

Unit

4

Astronomy:

the

science

of

stars教案Teachingaims:

.Talkaboutthescienceofstars

2.PractisegivinginstructionsTeachingdifficulties:1. Learntousenounclausesasthesubject

2.Learntowriteanessaytoshowyourproblemsandthewaytoo vercomethem.

3.Vocabulary:astronomy,atmosphere,violent,explode,s urface,disappointed,gradually,cheer,mass,harmful,pr esence,intime,prevent…from…dependon,nowthat,getthehangof,breakout

Teachingprocedures:ThefirstperiodIntensivereading StepⅠPresentation

T:Hello,everyone!TodaywewillcometoUnit4,Astronomy.B eforethatIhaveaquestion:wheredowecomefrom?orwecansa y:whoareourancestors?

S1:monkeys!

S2:BeijingRenwholivedmanyyearsago.

S3:dinosaurs

…

T:Verygood!Doyouknowwhatitwaslikebeforelifeappeared onearth?

S4:Fullofwater…

Bs:Idon’tknow.

T:Doyouwanttogetmoreinformation?

Ss:yes,wedo.

T:Todaywewilllearnsomethingabouthowlifebeganonearth .Turntopage25.Let’scometowarmingupfirst.

StepⅡwarmingup

.Readthethreequestions,whilethestudentslistenan

dfollow.

2.Givethestudentsseveralminutestodiscussthequestion s.

3.collectanswersfromtheclass.

4.checkanswerswhilediscussing.

StepⅢPre-reading

Getthestudentstodiscussthequestionsonpage25withthei rpartners.Thenaskthestudentstotelltheirstories.Enco uragethemtotelldifferentstories,Iftheydon’tknowany,tellthemsome.

T:Nowdiscussthesequestionswithyourpartners.ThenIwil lasksomeofyoutotellusyourstories.Areyouclear?

Ss:yes.

a.Doyouknoweachreligionorculturehasitsownideasabout thebeginningoftheuniverse?Giveanexampleifyouknow.

b.Doyouknowwhatascientificideais?

Readsomestoriestothestudents.

Panguseparatestheskyfromtheearth;

TheBiblicalAccount;

India;

japan;

Europe;

…

StepⅣReading

.Scanning

Getthestudentstoreadthepassagequicklyandaccuratelya ndmeanwhilehelpthestudentstoformagoodhabitofreading .Givethestudentsacoupleofminutestolookthrouththewho lepassage.Tellthemtoreadsilentlyandthenasksomedetai ledquestionsaboutthetext.Encouragethemtoexpressthei rideas.

T:wearegoingtolearnapassageabouthowlifebeganontheea rth.Nowreadthetextquicklyandthenanswermyquestions.

a.whatwasthereontheearthbeforelifebegan?

b.whydoscientistthinktherehasneverbeenlifeonthemoon?

c.whydoanimalsfirstappearinthesea?

d.whydogreenplantshelplifetodevelop?

e.whyweremammalsdifferentfromotheranimals?

Discusstheanswerswiththewholeclass.

2.Skimming

Inthispart,studentswillreadthetextagainandfinishpar t1,2,3

T:Nowskimthepassagefasttofinishpart1,2,3,4Thenwewil lchecktheanswerstogether.

keytopart1:DBIGEHAcFj

Discusstherestwiththestudents.

StepⅤListening

Listentothetapeforthestudentstofollowandhavefurther understandingofthepassage.

T:Readafterthetape,thenanswermesomequestionswithyou rbookclosed.

a.Howdidwatercomeintobeingontheearth?

b.whyiswaterimportantonearth?

StepⅥLanguagepoints

T:Turntopage25.Let’slookatthesentences: