英语人教版九年级全册教案补充.doc

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1、Unit6Whenwasitinvented?SectionB(3a-3b)教案锦石乡碧泉中学龚健Teachingaims:1.Tomakethestudentsbeabilitytousethesesentencepatterns.2.Tomakethestudentsknowhowtowriteadescriptionofaninvention.3.Toopenthestudents’mindstobeaninventor.4.Tomakethestudentsbepositivetothedifficultiesintheirl

2、ives.Teachingdifficulties:1.Tomakethestudentsbeabilitytousethesesentencepatterns.2.Tomakethestudentsknowhowtowriteadescriptionofaninvention.3.Toopenthestudentsmindstobeaninventor.Teachingimportance:1.Tomakethestudentsbeabilitytousethesesentencepatterns.2.Tomakethestuden

3、tsknowhowtowriteadescriptionofaninvention.TeachingProcedures:Step1:Review1.Theteachershowsapictureofpotatochipsandasksthestudents:Doyoulikeit?/Doyourememberthehistoryofchips?2.Showingthehistoryofchipsonthescreensentencebysentencebyaskingthefollowingquestions:Whenwerethe

4、potatochipsinvented?/Whoinventedthem?/Howdidthechefcookthem?/Howdotheytaste?3.Theteacherdiscusseswiththestudentsaboutthedifficultiestomakepotatochipsbyourselves.Step2:Lead-in1.It’sdifficultformostofustocutthepotatoesintoslices(薄片).Sotheteachergothelpfroma“ShenQi”.Thensh

5、owingthepictureofitwithaquestion,“Whataretheyusedfor?”2.ShowingtheinformationoftheknifeonTaobao.3.Showingthemakingproceduresofthepotatoeschips.Step3:Showinganinvention1.Theteachershowssomepicturesofapples,andtalkswiththestudentsaboutdicing(切块)theapples.2.Showingtheinfor

6、mationofthefruitdicingknifeonAmazon.3.Markingthename,priceanddescriptionofitonthepicture.Helpingthestudentsunderstandthedescription.4.Theteachertakestherealknifeandanappleout,thenshowshowtousetheknife.Step4:Writingadescriptionoftheinvention1.Askingthestudentsdiscusswith

7、theirpartnerstohelptheteachertofinishadiagramoftheknife.Includingtheinventor,price,material,usageandadvantagesoftheknife.2.Makingtheinformationinthediagramintosentences.Writingthedescriptionoftheknifesentencebysentence.Step5:BrainStorm1.Discussingthefollowingquestionswi

8、ththestudents:Doyouhaveanyprobleminyourdailylife?Haveyoueverthoughtaboutanewinventiontosolvethem?2.Showingthep