人教课标版必修3unit4howlifebeganontheearth教学设计

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1、人教课标版必修3Unit4Howlifebeganontheearth教学设计文/宋永平雷宇一、教学内容及学生情况分析：Howlifebeganontheearth讲述丫地球上生命的起源，文章最后讲述的现象发人深省：Theearthmaybecometoohottoliveon.它关系到地球上主.命的未来。授课对象是高一“神州班”的学生，全班学生英语基础较好，有较好的听说能力和极强的表演欲。英语课上他们很积极主动，善于思考，对许多问题都有自己独到的见解，并且善于表达自己的思想。本课的话题他们还是比较感

2、兴趣。二、教学目标：1.Getthestudentstoperformthedevelopmentoflifeontheearth.2.Letthestudentsknowtheimportantofprotectingourearth.3.Enablethestudentstotalkabouthowtoprotecttheearth.三、教学重点和难点：1.Improvethestudents?漠readingskillslikeskimming,scanning&summarizing.

3、2.Getthestudentstothinkcreativelyandactively.3.Helpthestudentstounderstandtheorderofdevelopmentoflife.四、教学策略：1.教学安排：(1)本节课由英语教师及3位学生老师(杨卓、杨宇霞、韩月)引导全班学生学习。(2)每位(学生)老师负责不同的环节。环节一：课文理解。环节二：表演。环节三：竞赛。环'^四：欣赏世博会主题曲Bettercity,Betterlife。1.课前预要求：(1)熟读生单词，预习课文。

4、(2)分组查阅有关全球变暖的资料。(3)部分学生排演地球上生命的发展历程。五、教学过程：StepIlead?鄄inGreetthestudentswiththeother3studentteachers,andintroducethefirststudentteachertothereststudents.(问候并介绍第一位学生老师)StepIIReading1.整体理解(杨卓负责)Thefirststudentteacherasksthestudentstoskimthepassageandcrea

5、tequestionsparagraphbyparagraph.Thenletthestudentsracetobethefirsttoanswerthequestions.例如：Ql:Whoknowshowlifebeganontheearthexactly?(Paragraph1)Q2:Whichgasisthemostimportantforhumans?(Paragraph2)Q3:Whatdoes"smallcleveranimals"referto?(Paragraph5)【设计说明】训练

6、学生通过快速阅读捕捉信息的能力。抢答方式充分调动了学生的学习积极性，使学生主动参与课堂活动，积极思考。1.篇章理解(Englishteacher负责)Theteacherdividesthestudentsinto5groups(10studentsagroup)andaskeachgrouptoreadthetextquicklytosummarizethemainideaofeachparagraph.Paragraph1:AWidelyacceptedtheoryabouttheinformat

7、ionoftheuniverse.Paragraph2:Theinformationoftheearth.Paragraph3:Theimportanceofwaterforlife.Paragraph4:Thedevelopmentofplantsandanimalsontheearth.Paragraph5:Thearrivalofhumansandtheirimpactontheearth.每一组推选一名代表带领组员讨论并发言。【设计说明】通过快速阅读加深学生对课文的理解，培养学生归纳文章大意的

8、能力。（介绍第二位学生老师。）2.细节理解（杨宇霞负责）Thesecondstudentteacherasksthestudentstoreadparagraph3and4andputtheorderofthedevelopmentoflifeintoatimeline.①smallplantsinwater②greenplantsonland③shellfishandallsortsoffish④humanbeings⑤amphibians（onlan