人教版高中英语必修四《Unit 2 Working the land》教案（3）.doc

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1、Period3UsingLanguageTeachinggoals教学目标1.EnableSstomasterthemainideaofthetextandknowthewaysoforganizingarticles.2.HelpSslearnhowtoenlargethewordsandstructuresofthesametopic.Teachingimportantanddifficultpoints教学重难点1.Howtograspthemainideaofthepassage.2.Howtograspthewordsandphrasesandbeabletousethemfre

2、ely.Teachingprocedures&ways教学过程与方法StepⅠLookatthepictures.Whatisthesubstanceweputonthesoilwhichmakescropsgrow?Howmanykindsoffertilizersdofarmersuse?Whichkinddofarmersusewhentheyaredoingorganicfarming?Doyouknowaboutorganicfarming?StepⅡReading1.Scanthepassageandgetthemainidea.Chemicalfertilizerscanca

3、usemanyproblems,soorganicfarmingisbecomingmorepopular.2.Answerthefollowingquestionsafterreadthepassage.1.Whyarechemicalfertilizerssopopularinfarmingtoday?2.Whatproblemscanbecausedbyusingchemicalfertilizers?3.Whatisorganicfarming?4.Whatisthemainreasonforusingorganicfarmingmethods?Keys:1.Theyareagre

4、atwaytostopcropdiseaseandincreaseproduction.2.Theycandamagethelandbykillinghelpfulbacteriaandpestsandbystayinginthegroundandundergroundwaterforalongtime.Theydamagepeople’shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses.3.Organicfarmingmeansgrowingcropswithoutusinganychemicals.4.T

5、hemainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.3.Readthepassagecarefullyandfillintheblanks.ChemicalFarmingAdvantagesStoppingcropdiseaseandincrease__________ChemicalFarmingDisadvantagesDamagingtheland:Killingthehelpful______Damagingpeople’s

6、health:◆Manychemicalsinthefoodsupplycanleadtocancerorotherillnesses.◆Foodgrowstoofasttobefullofmuch________.Organicfarming____Togrowgoodfoodandavoiddamagingtheenvironmentorpeople’shealthOrganicfarmingMethods◆Using______wastefromanimalsasfertilizer◆Changing_________ineachfieldeveryfewyears◆Using___

7、______ofsoiltoplantcrops◆Planting_____betweencropsStepⅢProjectPersuadefarmerstogrowthecropsbyorganicfarmingwiththeknowledgelearnt.Whatisorganicfarming?Whatfertilizershouldtheyuse?Why?Howtoplantthedifferentcrops?.