《电子技术专业英语》单元设计02

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1、广州城建职业学院课程单元设计（首页）课题（项目）ElectricalComponents授课时间年月日星期第节课类/课序理论/第2次课授课地点班级/小组10移动通信单元学时2能力（技能）目标：能用英语表达常用的电子元器件知识目标：Letstudentsknow:1）Whatisaresistor?2）WhatisOhmlaw?3）Whatisacapacitorandwhatisainductor?4)variouslowvoltageapparatus能力训练任务及案例：英语朗读以及回答问题。案例：电阻说明书教学重

2、点、难点与解决办法：重点：学习电子技术中一些元件的表达难点：学生的阅读能力解决方法：图示法教学过程设计思路：1、介绍本次课的知识目标与能力目标2、提出要求学生回答的问题3、听力训练回答问题4、讲解重点内容，学生朗读5、完成课后作业6、总结优化程序参考资料与设备、工具和材料的配置：Multimediateaching课程单元设计（续页）教学内容（训练项目）设计教学方法与手段设计学生活动（训练任务）设计时间分配（分钟）ReviewKnowledgegoalandAbilitygoalCurriculumcontentLi

3、steningandanswerquestion1Resistors2CapacitorsMultimediateach+demonstrate+discussionAnswerquestionListeningListeningandAnswerquestionListeningandAnswerquestionReadingAresistorisanelectricalcomponentthatresiststheflowofelectricalcurrent.Theamountofcurrent(I)flowi

4、nginacircuitisdirectlyproportionaltothevoltageacrossitandinverselyproportionaltotheresistanceofthecircuit.ThisisOhmlawandcanbeexpressedasaformula:.Theresistorisgenerallyalineardeviceanditscharacteristicsformastraightlinewhenplottedonagraph.ListeningandAnswerque

5、stion531520203Inductors4summaryAcapacitorisanelectricaldevicethatcantemporarilystoreelectricalenergy.Basically,acapacitorconsistsoftwoconductors(metalplates)separatedbyadielectricinsulatingmaterial(Fig2.3(a)),whichincreasestheabilitytostoreacharge.Thedielectric

6、canbepaper,plasticfilm,mica,ceramic,airoravacuum.Theplatescanbealuminumdiscs,aluminumfoilorathinfilmofmetalappliedtooppositesidesofasoliddielectric.ListeningandAnswerquestionAninductorisanelectricaldevice,whichcantemporarilystoreelectromagneticenergyinthefielda

7、boutitaslongascurrentisflowingthroughit.Theinductorisacoilofwirethatmayhaveanaircoreoranironcoretoincreaseitsinductance.Listening、discussionandAnswerquestion125课后作业布置：Translation:Aresistorisanelectricalcomponentthatresiststheflowofelectricalcurrent.Theamountofc

8、urrent(I)flowinginacircuitisdirectlyproportionaltothevoltageacrossitandinverselyproportionaltotheresistanceofthecircuit.Resistorsareusedtolimitcurrentflowingtoadevice,thereb