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2019-2020年高中英语《Unit4Astronomythescienceofthestars》reading教案
(1)新人教版必修3教案背景1,课时1课时2,学生课前准备尽可能多的搜集有关天文学的知识
二、教学重点Developstudents’readingandspeakingskills.
三、教学难点Enablestudentstolearntousereadingstrategiessuchasskimmingscanningandsoon.
四、三维目标技能目标
1.Getstudentstolearnsomeusefulnewwordsandexpressionsinthispart.
2.Getstudentstoreadthetext...方法目标Developstudents’readingskillsandenablethemtolearnhowtousedifferentreadingstrategiestoreaddifferentreadingmaterials.情感目标
1.Stimulatestudents’interestsoflearningEnglishbyreadingthetext.
2.Developstudents’senseofgroupcooperationandteamwork.
3.letstudentslearnabouthowlifebeganonearthandtheimportanceofprotectingtheearth.教学方法小组合作探究教具多媒体教学过程Warming-upandreadingStep1Revision
1.Checkthehomeworkexercises.
2.AsksomestudentstoreadthewordsofU
4.Step
2.Scanning
1.matchthemainideawitheachparagraph.Para.1formation形成oftheearth.Para.2Theimportanceofwaterforlife.Para.3Awidelyacceptedtheoryabouttheformationoftheuniverse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.
2.Dividethetextinto2partsStage1:Thedevelopmentoftheearthpara___—___Stage2:Thedevelopmentoflifepara___—___Step
3.Carefullyreading
1.Finishthefollowingtasks.Stage1:Thedevelopmentoftheearth1AftertheBigBangwhatwastheearthlikeIt’sstilljust________________.Thedustsettledintoa___________.2WhathappenednextIt________withfireandrockandproduced__________________________andother______.3Whatdidthewatervapourandgasesform______________________.4Whatappearedastheearthcooleddown_______appearedWhyiswatersoimportantforthebeginningoflife__________________________________________________________________________________________________________________________________________Stage2Thedevelopmentoflife1Whatlifedevelopedafterwaterappeared___________appearsinwater2Whatlifedevelopedinwaternext_________andallsortsof___3Whataboutthelifeonland_______and__________appeared
4.WhatlifedevelopednextonlandTheplantsgrewinto_____________appearedand_________developed.5Whatlifedevelopedafterdinosaurs_________onland6Whatlifedevelopedaftermammals___________animals
①Whoarethesmallcleveranimalswithhandsandfeet_________
②AretheytakingcareoftheearthwellWhy__________________________________________________________________________________________________________________________________________
2.Canyouputtheorderofdevelopmentoflifeintoatimeline1Insectsandamphibiansappeared.2Dinosaursappeared.3Theearthbecameasolidball.4Smallplantsgrewonthewater.5Reptilesappeared.6Plantsbegantogrowondryland.7Theearthwasacloudofdust8Waterappearedontheearth9Shellfishandotherfishappeared.10Theuniversebeganwitha“BigBang”.11Cleveranimalswithhandsandfeetappeared12Mammalsappeared.
3.Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandcombinetocreatestarsandotherbodies.Between
4.5and
3.8billionyearsago●Dustsettledintoasolidand______globe.●Theearthexplodedtoproduceits___________.●Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.Manymillionsofyearslater●Thefirstsmallplantsonthesurfaceofthewaterproduced_______.●Early_______andallsortsoffishappeared.●Greenplantsbegantogrowonland.●Insectsand___________appeared.Manymillionsofyearslater●________appearedandtheylaideggs.●Dinosaursdevelopedlaideggsand_______formorethan140millionyears.●Mammalsroseand____________babies.About
2.6millionyearsago●Somesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______makingtheearthtoohot.
4.TrueTorFalseF.1TheearthappearedbeforetheBigBanghappened.2Theoriginalatmosphereconsistedofnitrogenandoxygen.3Oxygenwasimportanttothedevelopmentoffish4Lifebeganinwaterandthenonland.5Thedisappearanceofdinosaursmadethepossibletheriseofmammalsontheearth.6Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7Humanbeingsproducetoomuchcarbondioxidewhichcausestheglobalwarmingontheearth.8Accordingtothetexthumanbeingswoulddisappearintheend.Step
4.PhrasesandUsefulExpressions
1.accordingto…______________
2.awidelyacceptedtheory______________
3.beginwith_____________
4.inalldirections____________________
5.severalbillionyears______________
6.whether…ornot…_____________-
7.intime____________
8.cooldown_____________
9.befundamentalto…______________
10.achainaction______________
11.makeitpossiblefor…todo…_______________________
12.fillup…with…______________
13.forthefirsttime______________
14.bedifferentfrom…_____________
15.escapefromtheearthintospace______________________________
16.asaresultof…______________
17.too…to…_______________
18.millionsofyearstocome___________
19.depend/relyon…________________。