高中英语《unit2 working the land》教案（3）新人教版必修4

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

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

3、Chemicalfertilizerscancausemanyproblems,soorganicfarmingisbecomingmorepopular.2.Answerthefollowingquestionsafterreadthepassage.1.Whyarechemicalfertilizerssopopularinfarmingtoday?2.Whatproblemscanbecausedbyusingchemicalfertilizers?3.Whatisorganicfarming?4.Whatisthemainreasonforusingorga

4、nicfarmingmethods?Keys:1.Theyareagreatwaytostopcropdiseaseandincreaseproduction.2.Theycandamagethelandbykillinghelpfulbacteriaandpestsandbystayinginthegroundandundergroundwaterforalongtime.Theydamagepeople’shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses.3.Organicfarm

5、ingmeansgrowingcropswithoutusinganychemicals.4.Themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.3.Readthepassagecarefullyandfillintheblanks.ChemicalFarmingAdvantagesStoppingcropdiseaseandincrease__________ChemicalFarmingDisadvan

6、tagesDamagingtheland:Killingthehelpful______Damagingpeople’shealth:◆Manychemicalsinthefoodsupplycanleadtocancerorotherillnesses.◆Foodgrowstoofasttobefullofmuch________.Organicfarming____Togrowgoodfoodandavoiddamagingtheenvironmentorpeople’shealthOrganicfarmingMethods◆Using______wastefr

7、omanimalsasfertilizer◆Changing_________ineachfieldeveryfewyears◆Using_________ofsoiltoplantcrops◆Planting_____betweencropsStepⅢProjectPersuadefarmerstogrowthecropsbyorganicfarmingwiththeknowledgelearnt.Whatisorganicfarming?Whatfertilizershouldtheyuse?Why?Howtoplantthedifferentcrops?.