计算机专业英语教案253页.doc

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1、教材名称：《计算机专业英语》主　　编：来永春出版时间：电子教案第25次课学时2授课题目（章，节）ProjectFiveBeautifyingtheOnlineStorePagePartATheoreticalLearningSkillOneAShortIntroductiontoMultimedia授课类型（请打√）理论课□√研讨课□习题课□复习课□其他□教学目的：1Inthispart,ourtargetistoimprovethespeedofreadingprofessionalarticlesandthecomprehensionabilityofthereader.2.Wehave

2、markedspecializedvocabularykeywordsinsomeparagraphssothatthereadercanquicklygraspthemainideaofthesentencesandparagraphs.教学方法、手段：1.Bythecomputer,projectorandblackboard-writing2.Bythestudent-centeredlearning,usingClassroomTeachingMethod,CommunicativeTeachingMethod,Task-basedTeachingMethodandAudio-vis

3、ualTeachingMethod教学重点、难点：1.Masterthekeywordsandphrasesinthetext.2.Cananalyzethestructureofthecomplexsentencesinthetext.3.CantranslatethetextintoChinesewiththehelpofthereferencematerials.3.CandescribeAShortIntrodutiontoMultimedia教学内容及过程设计补充内容和时间分配教学设计Step1.Learningkeywordsandphrasesaudion.音频animatio

4、nn.动画videon.视频compressionn.压缩framen.帧algorithmn.算法pixeln.像素JPEG(JointPhotographicExpertsGroup)abbr.联合图像专家组MPEG(MotionPictureExpertsGroup)abbr.运动图像专家组rectangularadj.矩形的gridn.网格Step2.Introductionoftrainingtarget1Inthispart,ourtargetistoimprovethespeedofreadingprofessionalarticlesandthecomprehensionab

5、ilityofthereader.2.Wehavemarkedspecializedvocabularykeywordsinsomeparagraphssothatthereadercanquicklygraspthemainideaofthesentencesand20分钟5分钟paragraphs.Step3.LeadinginashortintroductiontoMultimediaInfact,multimediaisjusttwomedia:soundandpictures.Itismadefromamixofhardwareandsoftware,ormachineandide

6、as.Itpresentsinformation,sharesideasandevokesemotions.Itenablesyoutosee,hear,andunderstandthethoughtsofothers.Step4.Analyzingthestructureofthecomplexsentences1.Multimediaisakindofcomputertechnologythatcombinestext,audio,staticgraphicimages,animations,andfull-motionvideo.2.Audioreferstosoundortothin

7、gswhichcanbeheard.Usually,thehumanearcanheararangeoffrequenciesbetweenaround20Hz~20KHz.3.AmajorgoaloftheMPEG-2videostandardistodefinetheformatofthevideodatawhichistobetransmitted.Step5.Memorizingandmasterin