牛津译林Book3Unit1 Book3unit1第3课时

Book3Unit1NatureinthebalanceTheAmazonrainforest:anaturaltreasureReading(PeriodII)安徽省歙县中学潘颖单元第3课时Reading1.教材分析WhatThisisadocumentarytranscript,thetopicofwhichistheAmazonrainforest:anaturaltreasure.ItintroducesthebasicinformationabouttheAmazonrainforest,aswellastherichplantbiodiversityandanimaldiversityinthearea.Studentswillalsogettoknowitsimportancetothewholeworldandthedangersfacingtherainforestnowadays.WhyByreadingthedocumentarytranscript,studentswillknowthesignificantroletheAmazonrainforestplaysinmaintainingthefinebalanceoftheEarth’secosystem.Inthesecondperiod,studentswillreadanothertranscript,whosetopicisdeforestation.Afterreadingthetwomaterials,studentswillknowmoreabouttheseriousproblemsfacingnatureanditistimeforthemtoraiseawarenessofenvironmentalprotection.HowThedocumentarytranscriptisintheformofanexposition,whichisclearlyandlogicallyorganized.Soitisnecessaryforthestudentstounderstandthefeaturesofanexpositorytext.Severalmethodsofdevelopinganexpositionareusedinthescript.Forexample,studentswillbeguidedtolearnhowtomakecomparisons.2.学情分析Whatstudentshaveknown:Studentsareawareoftheimportanceofnature.Afterthefirstperiod,studentsarefamiliarwiththebasicinformationoftheAmazonrainforestanditssignificancefortheenvironment.Whatstudentsneedtolearn:Theyneedtoknowaboutthewritingtechniquesofadocumentarytranscript.Asforevaluatingtheirclassmates’svocalrecording,theycanbeabletogivetheirownassessmentundertheguidanceoftheteacher.Andtheyneedtoaccumulatemoreinputtoexpressproperlyaboutenvironmentalproblemsandsolutionstothem.3.教学目标Bytheendofthislesson,studentswillbeableto:presentfiguresbymakingcomparisonswithfamiliarplacesorobjects;thinkcriticallyandevaluatethevocalrecordingofothergroupsproperly;knowtheimportanceofenvironmentalprotectionandsomeapproachestopreservingnature.4.教学重点Studentswillbeguidedtoanalyseandsummarizethestructureofanexposition.Itisimportantforthestudentstolearnhowtopresentfigureseffectivelybymakingcomparisons.5.教学难点Howtohelpthestudentstothinkcriticallyandexpresstheiropinionsfreely.6.教学过程教学目标教学活动与步骤评价要点时间与互动模式在评价表格的指导下，学生能够通过小组讨论有针对性地进行互评，指出优缺点。Step1SharingStudentswatchtwovideoclipsdubbedbytheirclassmates,givetheirstarratingandmakebriefcomments.Sharetwodubbingworksandguidestudentstomakecommentsontheirclassmates’works.Classwork14’设计意图：分享两个学生的配音作品，简单对比语音语调，并引导学生从结构、语法和用词三个方面进行分析，学会更加全面地批判性地进行点评。学生了解说明文中地一些写作手法，如：作比较。Step2AnalysisofthescriptTeachermakesabriefevaluationandhighlightsoneofthesentencesinStella’sarticle.Guidethestudentstolearnhowtopresentlargefiguresbymakingcomparisonswithfamiliarplacesorobjects.Studentswillknowhowtoevaluateapassageaftertheteacher’scomments.Individualwork5’设计意图：从学生创作的纪录片脚本入手，引导学生关注说明文的重要说明方法之一——作比较，复习倍数表达法。学生观看视频，并从不同角度分析视频文本所抒发的情感和表达的语气，辩证思考人与自然的关系。Step3AppreciationWatchtheoriginalversionofthevideoandanalysethe“feelings”oftherainforestfromitstone.Introducethetopicofthisunit---Natureinthebalance.Studentscanthinkcriticallyaboutthequestion---DoesNaturereallyregardhumanascleverbeings?Individualwork8’设计意图：观看原视频，分析其与学生创作视频的不同角度和意义，引出本单元的主题。通过拓展阅读，学生了解更多相关知识，尤其是关于森林砍伐的话题，了解说明文的结构。Step4FurtherreadingStudentsreadanarticleaboutdeforestation,andanswerthefollowingquestions:Whydoesdeforestationhappen?Whataretheconsequencesofdeforestation?Accordingtothelastsentence,whatwillbetalkedaboutinthefollowingparagraph?Studentswilllearnthatthetranscriptaboutdeforestationisorganizedintheorderof“causes-consequences-control”.Individualwork&Pairwork10’设计意图：联文阅读的文本也取自于纪录片。学生阅读文本回答相关问题，根据本文最后一句预测接下来会讨论什么话题。并就相关话题进行讨论,给出建议。激活第一课时已有储备知识，回归标题，回归单元话题。Step5SummaryRemindthestudentsofwhattheyhavelearnedintheReadingpart,andtrytoconcludewhytheAmazonrainforestisanaturaltreasure.Studentspayspecialattentiontotheclearstructureofthetwoexpositions.Teacherraisesstudents’awarenessofprotectingtherainforestaswellasourmothernature.Studentscanhavethechancetoreviewwhattheyhavelearnedinthereadingmaterial,andrealizetheimportanceofprotectingtheAmazonrainforestaswellasourmothernature.Individualwork&Groupwork3’设计意图：回归阅读标题TheAmazonrainforest:anaturaltreasure,思考为什么亚马孙热带雨林是自然宝藏，激活第一课时已有的知识储备。结合两篇阅读的内容，关注说明文的结构。总结所学，我们要保护被称为“地球之肺”的亚马孙热带雨林，也要保护大自然。7.板书设计8.作业布置Workinpairstocollectinformationaboutoneoftheenvironmentalproblems(airpollution,noisepollution,waterpollution...)9.教学反思在阅读第一课时后，学生对于亚马孙热带雨林相关内容有了一定的了解。因此在上周末，我布置了学生观看一个无字幕的视频，并根据上节课所学的知识给视频配音。学生的作品给了我很大的惊喜，也确实反应出他们进行了有效的团队合作。另外学生在本堂课上也