八年级英语上册 Module 2 Amazing things Unit 4 Numbers Reading课件 （新版）牛津上海版.ppt

2 4 amazingthings numbers reading cartoontalk puzzletime whatdoyouknowabout beforeyouread whileyouread afteryouread cartoontalk 2 1 1 2 cananimalscount hi mycatcan howdoyouknow hi iaskeditwhat6minus6wasanditsaidnothing 1 2 2 2 answerthefollowingquestions what sinlo shand what sinhi shands whichquestiondidloask whatdidhithink doyouthinkthatanimalscancount it sanabacus it sacat heasked cananimalscount hethoughthiscatcouldcount 1 2 2 1 puzzletime inthesetwopictures grandadishelpingbillywithhishomework billyisusingacalculatorandgrandadisusinganabacus mumanddadarewatching canyoufind15differencesbetweenthepictures sayandwriteasentenceabouteachofthedifferences 2 2 1 2 a b example inpictureatherearefoursweets butinpicturebtherearefivesweets 1 2 8 1 whatdoyouknowabout a1wearegoingtoreadaboutaninternationallanguage numbers doyourememberwhat international means 3 4 5 internationalbetweendifferentnationsorcountries 6 7 8 a2doyouknowwhat language means 8 2 1 2 3 4 5 language n wordsthatacertaingroupofpeoplesayandwrite l w doyouknowanyinternationallanguages 6 7 8 a3theworddigithastwomeanings anumber 1 2 3 etc andafinger thewordscalculatorandcalculatecamefromawordthatmeantastone guesstheconnectionsbetweennumberandfingerandbetweenstoneandcalculator 8 3 1 2 3 4 5 beforenumberswereinvented peoplecountedwiththeirfingersorwithstones digit 10 10 6 7 8 8 4 1 2 3 4 5 calculate v findtheanswerbyusingmaths k lkjule t canyoucalculatehowmuchtheholidaywillcost calculator n anelectronicmachinethatadds subtracts multipliesanddivides k lkjule t r add subtract multiply divide s b tr kt m lt pla d va d 6 7 8 8 5 1 2 3 4 5 a4canyougivethelargestnumberthatexists infact thereisn tone everynumbercanalwaysbemadebiggerbyadding1toit a5thinkofthejobsthatusenumbersalotandthejobsthatdonotusenumbersoften 6 7 8 8 6 1 2 3 4 5 b1useyourdictionarytolookupthesewordsandphrases 6 7 8 8 7 1 2 3 4 5 b2weallusenumbersinourdailylife numbersareaninternationallanguage whatdoyouknowaboutthelanguageofnumbers trythisquiz matchthewordswiththesignsandnumbers 6 7 8 1adecimalnumber7add plus2equals8subtract minus3apairofoddnumbers9multiply4apairofevennumbers10divide5afraction11anumbershowingdegrees6zero12apercentage 8 8 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 d ri p sent 6 7 8 1 2 3 1 beforeyouread abeforeyoureadthepassage lookatthefollowingpicturesfirst putthemintheorderofthehistoryofnumbers thenlookattheheadingsonpage57andcheckyouranswers 3 0 3 2 1 2 3 thishistoryofnumbers 0 ancientnumbers zero calculatingmachines brainagainstcomputer bnow lookatthetitle theintroduction theheadingsandthepictures thenonthelistbelow tick thethingsyouthinkthearticlemaytellyou 3 3 1 2 3 longago thereweredifferentwaysofwritingnumbers zeroisnotanumber zeroisanespeciallyimportantnumber machinesmakeiteasierforustocalculate yourbrainmaycalculatebetterthanacomputer yourbrainisanimportantpartofyourbody whileyouread 16 1 1 2 3 4 5 a1readthewholepassageonpage57forthefirsttime findthefollowingwordsorphrasesinthepassage workouttheirmeaningsbyyourself 6 7 8 9 10 11 12 13 14 15 16 16 2 a2choosetherightmeaningsforthesewords nearlyamostbalmostinventedadidnotlikebmadeforthefirsttimeaccurateacorrectbeasy 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 inaflashainalongtimebinashorttimelifetimeatimethatsomebodyworksbtimethatsomebodyliveslikelightningaveryquicklybveryslowly 18 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 a3matchthewordsincolumnawiththemeaningsincolumnb 16 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 a4writethewordsthatgowiththedescriptions 1 anancientcalculatingmachinethatisstillusetoday 2 alivingcomputer 3 asmallmachinethatuseselectronicpowertodocalculations 4 averypowerfulmachinefordoingcalculations an the a a abacus brain calculator computer 16 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 breadthepassage howmanylanguagesdoyouknow everyoneknowsatleasttwo hisorherownlanguageandtheinternationallanguageofnumbers 16 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 inancienttimes peoplewrotenumbersinmanydifferentways asthesepicturesofthenumber6show however theynearlyallcountedinthesameway intens ancientnumbers 16 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 zero mostofususethesystemofnumberswithnumbersfrom1to9and0 zero withthesetennumbers wecanwriteanynumberfromthebiggesttothesmallest theindiansfirstinventedanddevelopedthe1to9systemofnumbers theytheninventedthezero thiswasaveryimportantinventionbecauseitmadeiteasiertowritebignumbersandtocalculate 16 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 calculatingmachines oneofthefirstcalculatingmachineswasanabacus abacusesaresofastandaccuratethatpeoplestillusethemtoday amodernelectroniccalculatorcanadd subtract multiplyanddivide itcanalsocalculatepercentagesandsquareroots computersareverypowerfulcalculatingmachines inaflash acomputercandoacalculationthatyoucouldnotdoinyourwholelifetime findthenumberthat whenitismultiplied23timesbyitself givesthisanswer 916748676920039158098660927585380162483106680144308622407126516427934657040867096593279205767480806790022783016354924852380335745316935111903596577547340075681688305620821016129132845546805780158806771 16 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 brainagainstcomputer somepeoplecallthebrainalivingcomputer isahumanbrainamorepowerfulcalculatorthanacomputer thefollowingstorymaygiveananswer shakuntaladeviisaladyfromindiawithanamazingbrain shakuntalaandaverypowerfulcomputerweregiventhisproblemtosolve 16 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 shakuntala sbraintookfiftysecondstofindtheanswer likelightning thecomputertookaminute however someonehadtofirstprogramthecomputerwithinstructions andthattookmanyhours noonehadtoprogramshakuntala useyourownlivingcomputertosolvetheproblemabove ifitisnotpowerfulenough youwillfindtheansweronpage67 answer 546 372 891 passage 16 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 cmayisaskingmrli thewriter somequestionsabouthisarticleonnumbers hisanswersarenotquiteclear readthearticleagainandmakehisanswersclearer thefirstonehasbeendoneforyou 18 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 language numbers numbers intens zero abacuses calculatingmachines humanbrain computer 16 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 dcompleteanswerstothesequestionsaboutmrli sarticle workaloneorinpairs 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 canyouexplainwhywecountintens wecountintensbecausewehave fingers whichdidtheindiansinventfirst the1to9numbersystemorthezero theyinventedthe first ten 1to9numbersystem 16 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 canyoucompletethissentencewiththreewordstotellusthatacomputerworksveryfast acomputercandoacalculation canyouusetwowordstotellusthatshakuntala sbrainworksveryfast itcandoacalculation isahumanbrainamorepowerfulcalculatorthanacomputer why inaflash likelightning youcanwriteyourownanswerhere afteryouread 3 1 aworkinpairs askandanswerquestionaboutmrli sarticleonnumbers s1asksthequestionsands2triestoanswerhisorherquestions 1 2 3 bcompletethesummary 3 2 1 2 3 ancientnumbers inancienttimes peoplewrotenumbers buttheyarenearlycounted zero everyoneusesthe 1to9plus0 zero the inventedthem makesit towritebignumbersandtocalculate calculatingmachines thethreecalculatingmachines the the andthe makeourlifeeasier brainagainstcomputer therewasonceacompetitionbetweenanindian anda inwhichthe won computerscannotdoanythingbythemselves mustprogramthemfirst in differentways intens numbersystem indians zero easier abacuses calculators computers lady computer lady humanbeings csaysomethingaboutthehistoryofnumbersaccordingtothepicturesbelow 3 3 1 2 3 consolidation workbook8a pages31 37and38 spe l especiallyadv very morethanusualormorethanothers hehasbeenespeciallybusythisweek mini dictionary bre n brainn thepartinsidetheheadofapersonorananimalthatthinksandfeels thatmanhasafinebrain brainsaremorethanjusteducation mini dictionary p t partn some butnotallofsomething oneofthepiecesofsomething wespentpartofthetimeinthemuseum thenovelisgoodinparts mini dictionary n l nearlyadv almost notquite mini dictionary i mnearly16 it smybirthdaynextweek s st m systemn agroupofthingsorpartsthatworktogether mini dictionary ipreferthissystemofteachingenglish theyaredevisingaroadsystem inventv mini dictionary whoinventedthebicycle thomasedisoninventedelectriclight nvent makeorthinkofsomethingforthefirsttime d vel p developv becomebiggerormorecomplete makesomethingbiggerormorecomplete mini dictionary somechildrendevelopmoreslowlythanothers ourcountryisdevelopingveryquickly n ven n inventionn athingthatsomebodyhasmadeforthefirsttime mini dictionary doyouknowthefourgreatinventionsinchinesehistory b k s abacusn mini dictionary kj r t accurateadj exactlyright withnomistakes mini dictionary hegaveanaccuratedescriptionofthethief lek tr n k electronicadj thingslikecomputers calculatorsandradiosareallelectronic mini dictionary thisdictionaryisavailableinelectronicversion thefirmisbritain smainproducerofelectronicequipment swe ru t squareroot mini dictionary thesquarerootof4is2 pa fl powerfuladj verystrong withalotofpower mini dictionary thecarhasaverypowerfulengine thepresidentisverypowerful inaflash veryquickly mini dictionary inaflash thecardisappeared k lkj le n calculationn theactorresultofcalculating mini dictionary perhapsyouhavemadeamistakeinyourcalculation allthesecalculationsarebasedonthedatayouhaveprovided h l wholeadj complete withnopartsmissing mini dictionary sheatethewholecake wearegoingtospainforawholemonth la fta m lifetimen allthetimeyouarealive mini dictionary inmyfather slifetimetherehavebeenmanychangesinthevillage enst againstprep usedwhenyoucomparetwothings mini dictionary what stherateof