高中英语必修3 Unit 4第二课时教学设计演示文稿1

Welcometotheclass2011年4月20日会宁二中童毅Uranus天王星Venus金星Earth地球Mars火星Mercury水星Neptune海王星Saturn土星Jupiter木星Quiz:InoursolarsystemeightplanetscirclearoundtheSun.Whatarethey?Canyoumatchthenameswiththeplanets?TheuniverseoursolarsystemBig-BangTheblackholeThelifeontheearth◇Themaintopicofthereadingpassage★HowlifebeganontheearthWhendidthe“BigBang”happen?Whatformwastheearththe“BigBang”?Carbon,nitrogen,watervaporandothergases.Howdidwatercomeintobeingontheearth?Whatwasimportanttothedevelopmentoffish?Whatmadepossibletheriseofmammalsontheearth?Whyaremammalsdifferentfromalllifeformsinthepast?Questionsandanswers:Solongago.Itthrewmattersinalldirections.Whatmadeuptheearth’satmosphereaftertheearthexploded?Astheearthcooleddown,waterbegantoappearonitssurface.Thecontinuepresenceofwater.Thedisappearanceofdinosaurs.Theygavebirthtoyoungbabyanimalsandproducedmilktofeedthem.Readthereadingpassagereadingpassageagainmorecarefullyandfindthemainideaofeachparagraph.ItemsMainideaPara1AwidelyacceptedtheoryabouttheinformationoftheuniversePara2TheinformationoftheearthPara3TheimportanceofwaterforlifePara4ThedevelopmentofplantsandanimalsPara5ThearrivalofhumansandtheirimpactontheearthListentothetapeaboutreadingandlearnthefollowingUsefulwordsandexpressionsBigBangbreakoutintimeblockupgivebirthtocheerupinone’sturnwatchoutexistnowthatasaresultlayeggsprevent…frompuzzleFillinthechartabouttheorderofdevelopmentoflife1.Smallplantsinwater2.Shellfishandsortsoffish3.Greenplantsonland6.Forests4.Insects(onland)5.Amphibians(onlandandinwater)7.Reptiles(onland)8.Dinosaurs(onland)9.Mammals(onland)10.LhumanbeingsAccordingtothereading,studentsdiscussthefollowingquestionsinyourgroups.1.Whywastheearthdifferentfromtheotherplanets?2.Whydidtheplantsgrowbeforetheanimalscame?3.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?4.Whatproblemiscausedbyhumanbeings?一、小组课堂评价表（课后完成）非测试性评价：小组互评，了解学生的学习情感、策略，由组长负责，组织小组反思，填写下表（以5分制计），并存入学习档案。姓名小组合作工作量组内活动创意查找资料量班级活动参与情况提出问题个数参与活动进步情况二、课后作业1、Discussingroupsandgiveareporttotheclass.2、《创新设计》P41-42阅读理解知识领会。3、找出课文中重要的知识点和语言点。