杠杆及其平衡条件光的折射1出示目标1．了解光的折射规律2．能用光的折射规律解释光的折射现象2【学习指导】1光的折射规律2光的折射现象3【学习指导一】光的折射规律4自主预习•阅读教材第81面及图4.4－1、图4.4－2,完成下列填空：•1．光从一种介质斜射入另一种介质时,传播方向发生偏折,这种现象叫做。•2．折射光线和入射光线、法线在；折射光线和入射光线分居在法线的；当光线从空气斜射入水或其他透明物体中时,折射光线将法...
1.水中的倒影是塔桥所形成的像。是由形成的。光的反射虚光的反射是光在同一种介质中传播的现象。1我们是怎样看到水中的鱼的？有光从水中传到我们的眼睛。光从一种介质进入另一种介质传播路线会发生什么变化呢？23第4节光的折射41.了解光的折射现象。2.了解光从空气射入水中或其他介质中时的偏折规律。3.了解光在发生折射时,光路的可逆性。4.4光的折射5光从一种介质斜射入另一种介质时,传播方向发生偏折,这种现象叫光的折射。一...
义务教育教科书（人教版）八年级物理上册123456789101112131415学而不思则惘,思而不学则殆。学而不思则惘,思而不学则殆。16
12Whataretheydoing?Theyare____________atable.hidingunder3Whataretheydoing?They___________thebuildingquicklywhenthegroundstopsshaking.areleaving4Whataretheydoing?Theyare______________fromtheseaandmovequicklytohigherground.runningaway51.That______beharmful!2.Betty,you______know!3.__________fromwindowsandheavyfurniture.4._________________streetlightsorunderpowerlines.StayawaymustcouldDon’tstandne...
义务教育教科书（教科版）八年级物理上册1234567891011121314151617不以无过为贤,而以改过为美。18
整体感知实例分析1本模块围绕“习俗与规则”这一话题展开,介绍了不同国家有不同的风俗习惯和风土人情。Unit2向学生介绍了英国的风土人情和传统生活习俗,凸显了理解文化差异的重要性。通过本模块的学习,使学生了解不同国家和地区的风俗习惯,拓宽视野,培养学生的文化包容心,促进学生的跨文化交际意识的发展。模块主题写作十一整体感知话题分析21．InChina,weopenagiftlater.2．InChina,weacceptagiftwithbothhands.3．Youmustntdo...
Lesson36CleanCars?1Icantransportgoods!Leadin2Gotravelling!3Icanflyinthesky!4Icanfloatinthesea!5FlyingDonuts6Learningaims:•1.Masterythenewwords:pedal,than,energy;•2.Learntousetheexpressions:•asksb.todosth.(asksb.nottodosth.)•thinkabout.•3.Sound,voiceandnoise区别.•4.Themainideaofthisletter.•5.Learntoprotecttheenvironment.7Newwordssoundv.听起来n.声音pedalv.踏的踏板；骑自行车n.踏板thanconj....
义务教育教科书（人教版）八年级物理上册123456789101112131415161718192021书中横卧着整个过去的灵魂。22
义务教育教科书（人教版）八年级物理上册12345678910111213141516171819不要慨叹生活的痛苦！慨叹是弱者。不要慨叹生活的痛苦！慨叹是弱者。20
Unit7Lesson42TheNewClub1TodayIwanttowritealettertomygrandpaaboutit!Pleasehelpme!Iforgethowtowritealetter!2Answerthequestions:•Whowritestheletter?•WhatdidBrianaskhisgrandpatodo?•WhatdidBrianandhisclassmatesdothismorning?•WhatisDanny’shobby?•WhatisJenny’shobby?•WhatisJenny’sidea?31.Pleasesenditbacktomeformycollection.send“寄,送”;①sendsth.tosb./sendsb.sth.给某人寄某物Eg:Myparentssendap...
第1节质量义务教育教科书（RJ）八年级物理上册1我们的讲台、课桌是由什么组成的？讲台和课桌哪个含有的木材多？铁锤、铁钉呢？想想议议铁锤铁钉讲台课桌2讲台、课桌、铁锤、铁钉物理学中称为物体,组成这些物体的木材、铁叫做“物质”。由上面的观察得出：讲台、课桌含有木材的多少不同；铁锤、铁钉含铁的多少也不同。一、质量31．定义：物体所含物质的多少2．物理量符号：m3．单位：（1）国际单位：千克（kg）（2）常用单位：吨...
Unit6BirdwatchersReadingⅡ1Location:Landtype:Importance:Rarebirds:Dangers:Actions:Hope:north-eastChinawetlandprovidesfoodandcovercraneslessandlessspaceforwildlifenofoodtoeatMorepeopleunderstandtheimportanceofthewetlands.TheChinesegovernmentmakeslawstoprotectZhalongTheBirdwatchingSocietyarestudyingthebirdsinZhalong.Summary:Zhalong-aspecialplace2We’resomerarebirds.Welikelivingin________.Welivein...
义务教育教科书（沪科版）八年级物理上册123456789101112131415161718192021一寸光阴一寸金,寸金难买寸光阴。22
义务教育教科书（沪科版）八年级物理上册123456789101112131415161718192021时危见臣节,世乱识忠良。22
Lesson42TheNewClub1IamBrian.MyfriendsandIshowedourhobbiestotheclassyesterday.TodayIwanttowritealettertomygrandpaaboutit!2Doyouknowhowtowritealetter?Pleasehelpme!Iforgethowtowritealetter!Canyouhelpme?3Thankyou!NowIcanwritealettertomygrandpa!Listen!Myletteriscoming!!!4Answerthequestions:•Whowritestheletter?•WhatdidBrianaskhisgrandpatodo?•WhosehobbydidBrianenjoymost?5♠WhydidBrianaskhisgrandpat...
Unit1Lesson6Jenny’sWeek1Talkaboutthefollowingquestions.1.Doyoulikewritingdiaries?2.Whatdoyouusuallydoafterschooloronweekends?3.Doyouhaveanyfunnythingsinyourfirsttwoweeksofschool?Leadin2afterschooltodaylastSaturdayinEnglishclassthismorninglaternextSundayafterthemovieReadandanswerquestions:playbasketballbuysomeclothestalktoeachotherhavelunchgotothemovieshavesupper3LanguagePointseg:Ihavetwosister...
