teacher’s guide for: wind chill factor - rock-it...

Contents:

Quick Reference Sheets:Intro:• . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page2Experiment1:• Hand Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .page3Experiment2:• Pinwheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page3EquipmentList:• Wind Chill Factor . . . . . . . . . . . . . . . . . . . . . . . . . . .page4Story,Part1:• The Minion Snakes . . . . . . . . . . . . . . . . . . . . . . . . . . . .page5Story,Endin• g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page6

Video Transcript:Introduction:• . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page7Story,Part1:• The Minion Snakes . . . . . . . . . . . . . . . . . . . . . . . . . . . .page8Experiment1:• Hand Temperature . . . . . . . . . . . . . . . . . . . . . . . . . .page10Experiment2:• Pinwheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page11StoryEndin• g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page14

Teacher’s Guide for:

Wind Chill FactorNote: All activities in this document should be performed with adult supervision. Likewise, common sense and care are essential to the conduct of any and all activities, whether described in this document or otherwise. Parents or guardians should supervise children. Rock-it Science assumes no responsibility for any injuries or damages arising from any activities.

Note: All activities in this document should be performed with adult supervision. Likewise, common sense and care are essential to the conduct of any and all activities, whether described in this document or otherwise. Parents or guardians should supervise children. Rock-it Science assumes no responsibility for any injuries or damages arising from any activities.

WindChillFactorARock-itScienceLessonFilmedJuly,2009

Title Page of Video

NOTE: This is the transcript of a lesson that was videotaped during an actual Rock-it Science class with real students, not actors. The students’ brainstorming comments are included on the video, but are not transcribed here because they’re not part of the lesson presentation.

Rock-it Science2110 Walsh Ave, Unit FSanta Clara, CA 95050www.rockitscience.org

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http://www.rockitscience.com/

Rock-it Science Teacher’s Guide Wind Chill Factor --

Quick Recap

Lesson Intro: Evaporation

Therewasapuddlethatkeptgettingsmallerandsmaller .Adogdranksomeofit,asnakeslith-•eredthroughandgotwet,andabigtruckdrovethroughandsplashedsomewaterout .Howmanyotherwayscouldapuddlegoaway?•Twomainways:itcouldevaporate,oritcouldsoakintotheground .•Whenapuddlegoesaway,doesitgethotterorcolder?•IfIpouredwateronyourheadsandyoustoodoutsideinthewind,wouldyougethotteror•colder?Whenthingsevaporate,itmakesthepuddlecolder .Whenitgoesupintothecloudsandcondens-•esintotheclouds,thecloudsgetwarmer .Warmthingsgoup .


Experiment RecapExperiment 1: Hand Temperature

Yourhandshavebuilt-inthermometers .•Setupalargefanandletthestudentsapproachitwith•theirpalmsfacingittoseeifitfeelshotorcold .Theycanalsostickouttheirtongues .Spraystudents’palmswithwaterandhavethemwalk•bythefanagaintoseehowhotorcolditfeels .Repeatwithrubbingalcohol .Inorderforevaporationtotakeplace,youneedwind .•Atairports,theyuseapolewithcupsonittomeasurewindspeed .Abetterwaytomeasureslowwindspeedsistocutabarrelinhalfand•putapolethroughthecenter,andsetitonabigwheelonthegroundsoitcanspinaround .Ifyouwereinsideit,you’dgetreallydizzy .Youcanalsomakeelectricitywithit .We’regoingtomakesomethingthatspinsevenbetterthanthat .

Experiment 2: PinwheelsDemonstratehowtomakeapinwheel(youngerstudentsneedalotof•helpwiththis):Layoutmaterial(clearplasticormirrormylar),placethesquarecard-•boardpatternonit,andtracearoundtheedges .Cutoutthesquare .Folditdiagonallyandcreaseit .Thenfolditontheoppositediagonalandcreaseit .•Drawacircleinthecenteranddrawlinesalongthefourcreasesfromthecornerstothecircle .•Drawadotinthecenterandadotneareachcorner,justtotherightoftheline .•Cutalongthecreasesfromthecornerjusttotheedgeofthecircle .•Useathumbtacktopunchaholeineachofthefivedots .•Pokeastraightpinthroughoneofthecorners,then•bendeachoftheothercornersinsequencedowntothepinandthreadthemontoitthroughtheirholes .Thenputthepinthroughthecenterhole .Pushthepinonlypartwayintoapencileraser,in•ordernottobendthepin .Writenameonpinwheelwithapermanentmarker .•

Whenstudentsfinishtheirconstruction,letthemwalk•aroundmovingtheirarmstomakethepinwheelspin,thenturnonthefanandletthemstandinfrontofitwiththeirpinwheels .

Equipment List: “Wind Chill Factor”


Items needed for Instructor:

LargeFan•SprayBottleofWater•SprayBottleofRubbingAlcohol•

Items needed for Students:

Consumables (per student):

MirrorMylarorClearPlasticSheet(about1sqft)•Pencil(unsharpened)witheraser•PushpinorThumbtack•Round-headedstraightpin•

Other:

PinwheelPatterns•Scissors•ColoredPermanentMarkers•

Prep Work:

Makeseveralpinwheel•patternsoncardboard:Patternisabout1foot•square .Drawdiagonallines•fromcornertocornerandacircleabout3inchesindiameterinthecenter .(DONOTextendthelinesintothecircle .Ifyoudo,thestudentswilltendtocutintoit .)Drawahole-punchdot•ateachcorner,totherightofthediagonalline .Drawahole-punchdot•inthecenter .

Pinwheel Pattern

Story Quick Recap: “The Minion Snakes”


Part 1:

EvilMisterFredboughtasausagemakerandleftitsittingnearhiscastlewhilehewenttothe•storetobuysomemeat .Helefta“DoNotTouch”signonit .•Theminionscouldn’treadit,andsomethoughttheyweresupposedtohitthemachinewiththeir•baseballbats .Othersthoughttheyweresupposedtojumpintothetopofit .TheyaccidentallyhittheONswitchwhiletheywerefightingandwrestling,andsomeofthe•minionsfellintothemachineandcameoutaslongsnakeswithmustaches,holdingbaseballbats .Nearby,JackandJillweregrowingtoiletsontheirtoilettree .Oncetheybecomeripe,Jackand•Jillwouldtakethemdownandsellthemtohardwarestores .EvilMisterFredsendsoneofhisminionsnakestosneakuponJackandJillandfindoutwhat•they’redoing .Thesnakedidn’tunderstandwhatJackandJillweretalkingabout,sohetoldEvilMisterFred•thattheywereraisinganarmyofrobotsintheirtreeinordertokillEvilMisterFredandtheminions .EvilMisterFredsentanarmyofminionstodestroytherobotsonthetree .Butwhentheystarted•hittingthetreewiththeirbaseballbats,theripetoiletsfellontheirheads,sotheminionsranoff .TheytoldEvilMisterFredtheyhaddefeatedtherobotarmy,buthelookedthroughhistelescope•andsawthattheywerestillinthetree .ThenEvilMisterFredsenthisarmyofsnakeswiththeirbaseballbatstobeatupJackandJill•andbreakalltheirtoilets .

Story Quick Recap


Ending:

JackandJillsawthearmyofsnakescominganddidn’tknowwhattodo .Jacksaid,“Itcouldbe•worse--therecouldbeatornado .”Andatornadoappeared,andheadedstraightforthetoilettree .•Italmostmissedthetreeandjusttookafewtoiletsofftheedge .•Thenitwentacrossthefieldandsuckedupallthesnakes,whichmadethemdizzyandangry .•ThetornadokeptgoingovertoEvilMisterFred’scastle .•Thesnakesgotallwrappedaroundhishead,andatoiletlandedontopofhishat .•

Transcript: Introduction


Onceuponatimetherewasapuddle .There’sourpuddle .Itwasaperfect,nicepuddle .Everybodyenjoyedthatpuddle .Andthepuddlekeptgettingsmaller,andsmaller,andsmaller .Oneday,adogcamealonganddranksomeofthepuddle .An-otherday,asnakeslitheredthroughandgotallwetandtooksomeofthewaterthatway .Andthenabigtruckcamealongandranrightthroughthepuddleandsplashedthepuddleallovertheplace .Beforelong,thatgreatbignicepuddlewasjustalittletinypuddleofabigmess .Howmanywayscouldthatpuddlegoawayiftherewerenodogs,snakes,ortrucks?[Students make suggestions, including evaporation and soak-ing into the ground.]Well,thosearethetwomainways .Thepuddlecanevaporateintotheair,oritcansoakintotheground .Thegroundisalwaysthirsty,likethat .

Now,whenapuddlegoesaway,doesthepuddlegethotterorcolderorstaythesame?[Students guess both hotter and colder.]Well,there’satestwecando .Whatwecoulddois,Ihaveabucketofwaterhere .Icouldpouritoverallyourheadsandthenyoucouldstandoutinthewindandseeifyougethotterorcolder .Colder?Okay,colder .We’llkindoftestthatoutlater .Usuallywhenthingsevaporate,itmakesthepuddlecolder,likethat .Whentheygoupintothecloudsanditcon-densesintheclouds,thecloudsgetwarmer .Isn’tthatweird?Remember,warmthingsgoup?Soallthewaterthatmadethepuddlecoldermakesthecloudwarmer,andawarmercloudwantstogoupandcreateswindandthingsupthere .Sotodaywe’regoingtobegoofingaroundwithwarmerandcolderthings .

Puddle with Dog, Snake, and Truck.

Water can evaporate or soak into the ground.

It gets warmer when it’s in a cloud.


Story: “The Minion Snakes”Well,EvilMisterFredwasbrowsingaroundthroughacatalogoneday .Hefoundasausagemaker .It’samachinethatyouputmeatin,andamotorturns--rrrrr,rrrr,rrrr--grindsthemeatup,andsquirtsitoutinalongtube .Hehadthatsittingoverathiscastle .Sohe’sgothiscastlethere,likethat .Andit’sgotadoor,andwe’llgiveitamustache,too .Andweneedahorizon .Thereyougo .Andhe’sgotthesausagemaker .It’saprettybigmachine .Ithasanopeninginthetoptodrawinmeatandstuff,it’sgotabigoldgrinderthingthatgrindsitallup,andit’sgotanozzlethatcomesout,withaholeinit .Andyouthrowthestuffinthereandoutherecomessausage,likethat .AndEvilMisterFredputabigsignonitthatsaid,“DoNotTouch .”Andhewentawaytogobuysomemeat .

Andtheminionscamearoundandtheysawthesignthatsaid,“DoNotTouch .”Now,theminionslookedatthisandtheysaid,“Oh,look,asign--withwords .Wecanreadwords .We’renotasdumbaspeoplethink .Iknowwhatthatsays .”Andoneminionsaid,“Yeah,thatsays,“Hititwithyourbase-ballbat .’”Sotheystartedhittingitwiththeirbaseballbats .Andanotherminionsaid,“No,that’snotwhatitsays .You’retotallywrong!Itsays,‘Jumpintheboxonthetop .’”Andsooneofthemjumpedintheboxonthetop,andthey’reallfight-ingandwrestlingandeverything,andwhiletheyweregoof-ingaroundfightingandwrestling,somebodypushedtheONbutton .Andheturnedawholebunchofminionsintosausage .Theypoppedoutofthere,andnowhe’sgotminionsnakeswiththeirmustaches,carryingbaseballbats .

WhenEvilMisterFredcamebackhesaid,“Waitaminute .Wheredidallmyminionsgo?”Andtheysaid,“Idon’tknow,boss .Wedidn’tdoanything .We’regood .Wedidn’tputtheminthatmachineyoubought .No,sir,notus .We’vebeengood .”AndEvilMisterFredlookedatthemandhesaid,“Youwhat?Youputminionsinmysausagemaker?Where’dtheygo?”Andtheotherminionssaid,“Idon’tknow,”andtheytriedtogetaway .AndEvilMisterFredsawallthesesnakesrunningaroundwithmustachesandbaseballbats .Hesaid,“Oh,no .Youturnedmyminionsintosnakes .Oh,well,IguessI’llkeepthem .Youneverknowwhenyou’regoingtoneedagoodsnake .”

Now,notfaraway,JackandJillareplayingaroundwith . . .WhatwouldbeagoodoccupationforJackandJill?[Student: Cleaning toilets.]Ah,JackandJillarecleaningawholefieldfulloftoiletbushes .There’stoiletbushesoutthere .Andtheygetnastysmellingandeverything .Sothere’stoiletseverywhereoutthere .Wheredoyouthinktoiletscomefrom?They’vegottogrow,right?[Student: Maybe there are toilet trees.]Maybetheygrowontoilettrees .Thatwouldbebetter .Here’satreewithtoiletsgrowingonit .Likethat .AndJackandJillaretendingtothemtoseeifthey’reripeornot .Andoncethey’reripe,

Evil Mister Fred’s sausage maker.

Minions turned into snakes.

theyshouldtakethemdownandselltheminthehardwarestores .Somebody’sgottobuythem .Howdoyougetatoiletinyourhouse?Dotheyjustgrowinyourhouse,too?

Andtheyweremindingtheirownbusiness,andEvilMisterFredsaid,“Whatarethosetwodoingdownthere?They’vegottreeswithtoiletsgrowingonthem .That’sthestrangestthingI’veeverseen .Ineedsomeonetogoovertheretosneakupandseewhetherthey’retryingtodosomethinginsecretornot .”Andsohetoldoneofhissnakes,“Gooverthereandslitheraroundinsecret .Don’tletanybodyseeyou .AndfindoutwhatJackandJillaredoing .”Sothesnakewentoverthere,andhelistened,andhewatched,andhedoesn’tevergetanythingquiteright .HeheardwhatJackandJillsaid .Andthenhecamebackandsaid,“Boss!Iheardeverything .It’ster-rible!They’reraisingtheserobotsonthattree .Andtherobotsaregoingtomarchacrossthisfield,they’regoingtoattackthecastleandkillallofus .”AndEvilMisterFredsaid,“JackandJillareraisinganarmytokillus?Withrobots?Oooooh,thatmakesmemad!”AndsoEvilMisterFredsaid,“We’llshowthem!”

Sohetrainedhisminionstoformlinesandhowtomarch .Andhetookalltheminionsthatweren’tsnakesandhesaid,“Okay,youguys,you’regoingtogoacrossthatfieldandyou’regoingtodestroyallthoserobotsthey’vegotgrowingonthattree .”Andsotheminionscamemarchingacrossthefield--dum,dum,dum,dum--withtheirbats .Theycametothetoilettreeandtheystartedhammeringonthetoilettree .Well,someofthetoiletswereripe .Andwhenyoubangonatoilettreeandthere’sripetoilets,thetoiletsfalloff,andtheywerehittingtheminionsontheheadandknockingthemdown .Andtheminionssaid,“Aaaaaaa,attackoftherobots!”Andtheyranaway,becausetheywereafraid .

AndtheycamebackandEvilMisterFredsaid,“Well,didyoudefeatthem?Didyoukillallthosero-bots?”Andtheminionssaid,“Uh,yeah,Boss .Wedid .Wekilledthem .Everyoneofthem .Yeah,that’sright,wekilledthemall .”AndEvilMisterFredsaid,“Uh,Idon’tthinkso .”Hegotouthistelescopeandhelookedacrossthefield,andsureenough,therewasstillabunchoftoiletsonthetree .Hesaid,“Oh,man,youguyscan’tdoanythingright .I’mgoingtosendmysnakesoverthere .They’llthinkofsome-thing .”

Sohehadthousandsofsnakesbythistime,withtheirbaseballbats .Andhe’sgoingtosendthemacrosstobeatupJackandJill,breakalltheirtoilets--canyouimaginelifewithnotoilets?--andcreatehavocandmayhem .AndJackandJillhappenedtoglanceacrossthefield,andnowthere’sanentirearmyofsnakescomingtogetthem .IfyouwereJackandJill,whatwouldyoudo?


Jack and Jill’s Toilet Tree

Evil Mister Fred with telescope and army of minions & snakes.


Experiment 1: “Hand Temperature”

Imagination and Brainstorming Time

[Students make suggestions](THEREARENOWRONGANSWERS!Whatevertheysay,youshouldreply:“That’sagoodidea,”“Theymightdothat,”etc .Afterbrainstorming,proceedwiththeexperi-ments,thenfinishthestory .)

We’llleavethisToBeContinued . . .

[Instructor has a large fan and points it toward the students.]Youcanprobablyfeelsomewind .Doesmyvoicesoundthesameouthereasitdoesfrombackhere?[Moves behind the fan as he speaks.] [Students: No.]Thesamehere?[Students: No.]No?[Student: Your voice vibrates.]Myvoicevibrates?Well,wewanttoseeifthiswindchangesthewayyourhandsfeel .I’mgoingtoputitbackhere .Bytheway,thisisagyroscope .IfImoveitupordown,orleftorright,itdoesn’tdoanything .However,ifIgo[tries to turn sideways and the fan makes a grating noise],ittalks .Itdoesn’tlikethat[places the fan on a stand].

Sowhatwe’regoingtodois . . .Doeseverybodyherehavetwohands?[Students: Yes.]Youknowyourhandshavether-mometersbuiltin?[Students: Yes.]Yep .Yournervesinyourfingers .You’regoingtoapproachthefanwithyourhandsandfeelthemandthenwalkaroundthiswayandseewhatitfeelslike .Youcanstickyourtongueout,too,whenyoucome .Seeifyourtonguefeelshotorcold .Don’tlickthefan .Soevery-bodylineup .You’regoingtowalkuphere,feelthefan,andthengoaroundandgetattheendoftheline .[Students take turns walking up to the fan with their palms forward to feel the

wind.]

Now,beforeyougooverthere,I’mgoingtospraywateronyourhands .Andthenyouholdyourhandsupthesamewayandseeiftheyfeelwarmerorcolder .Whenyoucometome,putyourhandsdownlikethissoIdon’tsprayyourfacetoomuch .[Students take turns getting water sprayed on their palms and then going up to the fan again.]

Thistimewe’regoingtouserubbingalcohol .PutyourhandsdownflatlikethissoIdon’tsprayitinyoureyes .[Students take turns getting rub-bing alcohol sprayed on their palms and then going up to the fan again.]Okay,youcansitdownwhereyouwerebecauseeverybody’sgottheiralcoholandwaterandtheirregularhands .

Students feel the wind from the fan.

Spraying water on hands.


Experiment 2: “Pinwheel” Now,inorderforevaporationtotakeplacereallywell,youneedsomewind .Windworksterrificallygoodforthat .Andscientistsliketomeasurewindspeed .Usu-ally,theyhave--haveyoueverbeentoanairport?There’sapoletherewithsomecupsonit .There’salittlethingtherewithawheel,andit’sgotsomelegs,andjustlittleroundcups .Whenthewindblows--see,there’skindofathingbehindtheseguys,likethat .Whenthewindblows,itmakesthethingsspinroundandroundincircles .Andtheyhookittoalittlemachinethatmonitorshowfastthewindblows .Well,somebodyinventedamuchbetterwaytomeasureslowwindspeeds .Andifyouwantedtogetenergyfromthewindtoproduceelectricity,thiswouldbeagoodwaytodoit .

Onewaythat’sprettycloseisyoutakeagreatbigbarrel .Haveyoueverseenabigbarrelthatlookslikethat?[Student: Does it have toxic in it?]Sometimes,yes,that’sthekindofbarrel .Ifyoucutoneinhalflongways,andthentaketheotherhalfandmoveitoverhere,nowyouhavetwobarrels--twohalf-barrels .Youcouldgetinsideofit .Thiscouldbehalfofyourheadwithoneofyoureyesandpartofyoursmile,andhere’spartofyourshoulder,andhere’soneofyourlegsandyourfoot .There’syouinside .Now,let’sputapolethroughthecenterofthisthing .[Student: What about the other half?]There’ssomebodyelsehidingintheotherhalf,ontheotherside .Youcan’tseethembecausethey’rehidden .Andputsomethingthat’llletitspinontheground,likeabigwheel .Nowyou’vegottwopeopleinsomethingthat’llspin .Andyoucangofwoo,fwoo,fwoo,fwoo,fwoo,fwoo,spinningaround,andtheygetreallydizzy .Iftheygetoutofit,andthewindblows,thatthingwillspinreallywell,andyoucanmakeelectricitywithit .

Thethingyou’regoingtomaketodayactuallyspinsbetterthanthatdoes .I’mgoingtoshowyouhowtomakeone .Youcaneithermakeitoutofclearmaterialandcolorit,oroutofsilverymaterialandcolorthat .Yougetyourchoiceofclearorsilvery .You’regoingtoneedalongpinaspartofit,andathumbtack,andsomescissors .We’llshowyouhowtomakeit .We’llputthisstuffhere .[Places materi-als on table.]Todothis,youdecidewhatyou’regoingtouse .

Let’ssupposeIdecidetomakeitoutofclearstuffbecauseI’mhereandyouguysproba-blywanttousethesilverstuff .

I’llputmypieceofcardboardonitanddrawaroundthecardboard,likethat .AndthenI’mgoingtocutarounditwithscissorsandmakeasquare,moreorlessasquare .Whenyou’vegotasquare,thenyou’rego-ingtofolditintoatriangle,creaseit,anditmakeslikealineonit .

Wind Speed Machine.

Half-barrel wind speed machine.

Cardboard pattern for pinwheel.

Creasing the diagonals.


Andthenyoufolditanotherwayandgo[creases it],andyou’vegotaplussign,likethat .Oritcouldbeahat .Thenyou’regoingtouseyourmarkerpen,whatevercoloryoulike,andyou’regoingtodrawonitapatternlikethatone[holds up cardboard pattern].That’snottoohardtodo .Anddrawacircleinit--doesn’thavetobeaperfectcircle .Thenyoudrawalineonthefoldmarks,outtotheedges .Youputadotinthemiddle,andthenyouholditupandyouputadotontherightsidehere,andyouputadotontherightside

there,andyouputadotontherightsidethere,andyouputadotontherightsidethere,andyoukeepputtingdotsontherightsidesuntilyoucomedowntoaspotwherethere’salreadyadot .Andthenyoutakeyourscissorsandcutalongthefoldsuntilyoureachthecircleandstop .Ifyoukeepgoing,youendupwithfourtriangleandsay,“MisterMaaaac,Imadeamistake .Igotfourtrianglesinsteadofathing .”[Cuts along the fold lines.]There .Nowyou’vegotaweird-lookingthing .

Thenwe’lltakesomethumbtacks .Trytopickonethatstillhasapointonit .Andthenyoupokeaholewhereverthereweredots .Therewasadotinthecenter,soI’llpokeaholethere .Therewasadotontherightsideofthatone,soI’llpokeaholethere .Therewasadotontherightsideofthatone,soI’llpokeaholethere .Therewasadotontherightsideofthatone,soI’llpokeaholethere .Therewasadotontherightsideofthatone,soI’llpokeaholethere .AndthenIranoutofdots .Canyoutellwhatitisyet?[Student: A pinwheel.]

Thenyou’regoingtotakeapinandstickitthroughoneoftheholes .Nowyou’vegotapinstickingoutthere .Andifyoubendthisoverandpointittowardthecenter,it’sreadytostabaholeinyourbellybutton .Youwanttobestandingup,youwantthepinpointingatyourbellybutton,andtrynottobumpintoyourneighbors .Thenyoutakethenextoneandbenditoverandputthepinthroughthatone .Andthenyoutakethenextoneandbenditoverandputthepinthroughthatone .Andthenyoutakethenextoneandbenditoverandputthepinthroughthatone .Nowyou’vegotsomethingthatlookskindoflikeapropeller .Youhave

togothroughthatlastone--thereitgoes,throughthelasthole .

Drawing the dots.

Cut only up to the circle.

Punching the holes with a tack.

Bending the corners to pin them.

Put pin through center hole.


Now,you’reonlygoingtostickitalittlewaysintotheeraser .Usuallyinaclassoftwentypeople,Itellthem,“Stickitalittlewaysintotheeraser .”Tenofthemsay,“Notme!Un-uh!I’mgonnastickitallthewaythroughthateraser!”Sotheyputthatinthere,theyjustshoveashardastheycan,anddiscoverattheendoftheeraserthere’swood .Andtheykeeppressing,andpressing,andpressing,untiltheybendthatpoorlittlepinintoanSshape .Andthelittleguycomplainsandhollers .

Nowyou’vegotapinwheel .It’skindofafrictionyonebecauseit’srub-bingagainsttherubbereraser,butwe’lltryitanyway .Ifyouleaveitlikeanairplaneandcanturnyourselfincirclesitshouldpinwheelize .

So,putyoursquarerightnexttotheirsquare,tracehis,thentraceyours,sowedon’twastealotofmaterial .Ifyou’redoingmylar,there’ssomepatternsonsomeofit,youcanchoosewhateveryoulike .Tryandfitasmanysquaresasyourcanontothemylar,traceitout,andcutit .Sofirstwe’llpassoutthecardboardpiecesandsomemarkerpens .We’llspreadoutsomemylarandsomeclearstuffwhereveryouguysare,andyoucan

traceyoursandcutitoutandthengobacktowhereyoucandotherestofit .Ifyouneedhelpwithanypartofit,allyouneedtodoissay,“Chirp,chirp,chirp!”

[Students start tracing and cutting out their patterns, then fold, mark, and cut them and use the thumb-tack to punch the holes. The younger ones need help folding and creasing and drawing the circle and

the dots. Many of the students also need help punching the holes and getting the straight pin put through the holes properly. They tend to bend the corners in the wrong direction and/or in the wrong order. Then they put the straight pin into the eraser to complete the pinwheel. After the pinwheels are made, students walk around moving their arms to make the pinwheels spin. Then the Instructor turns on the fan so students can come up and see how the wind turns their pinwheel. Then they write their names on them.]

Finished pinwheel on pencil.

End of Lesson

If y0u have questions about this lesson, please ask them through the online Teacher Support Forum on our web site.


End of Story * DO NOT * present this part of the lesson until after the experiments!JackandJillsaid,“Wehavenowaytodefendourselves .Lookatthosevicioussnakes .They’regoingtocomehereandbiteus,andwe’llhavetorunaway .We’llprobablygetpoisoned .Thisisterrible .”AndJillsaid,“Jack,whatshouldwedo?”AndJacksaid,“Idon’tknow .Couldbeworse .”AndJillwent[puts hand over mouth],“Jack,don’tsayany-thing!Wheneveryousaysomethingcouldbeworse,thenithappens .”Jacksaid[mumbling],“Therecouldbeatornado .”Jillsaid,“Ohhhh,no,Jack!Yousaidtornado!Ohh,whatarewegoingtodonow?”

Sureenough,alongcameatornado .AndJilllookedupandshesaid,“Ohhhhh!”Andthetornadozoomedby,headingstraightforthetoilettree .Anditjustmissedit,tookafewtoiletsofftheedge,wentacrossthefield,andsuckedupallthesnakes .Nowyou’vegotafewtoiletsfloatingaroundandawholebunchofsnakesinthetornado .Andthesnakesarereallydizzyandangry .Anditkeptgoing,rightovertoEvilMisterFred’scastle .AndthesnakesgotallwrappedaroundEvilMisterFred’shead,andatoiletlandedrightontopofhishat .Andeverybodylivedhappilyeverafter,exceptEvilMisterFred .Andsomeofhissnakeminions The tornado picked up

the snakes and toilets.

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teacher’s guide for: wind chill factor - rock-it...

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