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RelayProgrammingLessontime:20MinutesBasiclessontimeincludesactivityonly.IntroductoryandWrap-Upsuggestionscanbeusedtodelvedeeperwhentimeallows.

LESSONOVERVIEWThisactivitywillbeginwithashortreviewofGraphPaperProgramming,thenwillquicklymovetoaraceagainsttheclock,asstudentsbreakintoteamsandworktogethertocreateaprogram,oneinstructionatatime.

TEACHINGSUMMARY

GettingStarted-15minutes1)Review2)Vocabulary3)RefreshGraphPaperProgramming

Activity:RelayProgramming-20minutes4)RelayProgramming

Wrap-up-10minutes5)FlashChat:Whatdidwelearn?6)VocabShmocab

Assessment-10minutes7)RelayProgrammingAssessment:Debugging

LESSONOBJECTIVESStudentswill:

PracticecommunicatingideasthroughcodesandsymbolsUseteamworktocompleteataskVerifytheworkoftheirteammatestoensureasuccessfuloutcome

TEACHINGGUIDEMATERIALS,RESOURCESANDPREPFortheStudent

BlankPaperorIndexCardsforprogramsSheetsof4x4papergridsforthestudentstouseaspractice(TheseareprovidedaspartoftheRelayProgrammingActivityPacket,butifyouhavethestudentscreatetheirown,youcanincludeCommonCoreMathstandard2.G.2.)Markers,pens,orpencils

RelayProgrammingAssessmentFortheTeacher

LessonVideoLocateawideopenspaceforthisactivity,suchasthegymoroutdoorfieldPrintoutoneRelayProgrammingActivityPacketforeachgroupPrintoneRelayProgrammingAssessmentforeachstudentSupplyeachgroupwithplentyofpaperandpens/pencils

GETTINGSTARTED(15MIN)1)ReviewThisisagreattimetoreviewthelastlessonthatyouwentthroughwithyourclass.Youcandothisasonelargegrouporhavestudentsdiscusswithanelbowpartner.Herearesomequestionsthatyoucanaskinreview:

Whatdidwedolasttime?Whatdoyouwishwehadhadachancetodo?Didyouthinkofanyquestionsafterthelessonthatyouwanttoask?Whatwasyourfavoritepartofthelastlesson?

2)VocabularyThislessonhasonenewandimportantword:

Debugging-Sayitwithme:De-bugg-ingFindingandfixingproblemsinyouralgorithmorprogram

3)RefreshGraphPaperProgramming

LESSONTIP Finishingthereviewbyaskingaboutthestudents'favoritethingshelpstoleaveapositiveimpressionofthepreviousexercise,increasingexcitementfortheactivitythatyouareabouttointroduce.

Recallthatin"GraphPaperProgramming"weguidedourteammates'AutomaticRealizationMachine(ARM)usingarrows.TakeamomenttodoarefresherGraphPaperProgrammingimage--eitheronethatyouhavealreadycoveredoranentirelynewone.Wearegoingtodothesamekindofthingtoday,butinsteadofcontrollingeachother,wearegoingtoworktogethertocreateaprogramonesymbolatatime.

ACTIVITY:RELAYPROGRAMMING(20MIN)4)RelayProgrammingThepracticelessonwaseasyenough;let'saddsomeaction!We'regoingtodothesametypeofthing(createaprogramdescribinganimage)butnowwe'regoingtodoitinrelayteams,onesymbolatatime.Therulesofthisgamearesimple:

1. Dividestudentsintogroupsof3-5.2. Haveeachgroupqueueuprelay-style.3. Placeanidenticalimageattheothersideoftheroom/gym/fieldfromeachteam.4. Havethefirststudentinlinedashovertotheimage,reviewit,andwritedownthefirstsymbolintheprogram

toreproducethatimage.5. Thefirststudentthenrunsbackandtagsthenextpersoninline,thengoestothebackofthequeue.6. Thenextpersoninlinedashestotheimage,reviewstheimage,reviewstheprogramthathasalreadybeen

written,theneitherdebugstheprogrambycrossingoutanincorrectsymbol,oraddsanewone.7. Thatstudentthendashesbacktotagthenextperson,andtheprocesscontinuesuntilonegrouphas

finishedtheirprogram.8. Firstgrouptofinishisthewinner!

Playthroughthisseveraltimes,withimagesofincreasingdifficulty.

WRAP-UP(10MIN)5)FlashChat:Whatdidwelearn?

Whatdidwelearntoday?Whatifwewereeachabletodofivearrowsatatime?

Howimportantwoulditbetodebugourownworkandtheworkoftheprogrammerbeforeus?Howaboutwith10arrows?10,000?Woulditbemoreorlessimportant?

Isiteasierorhardertohavemultiplepeopleworkingonthesameprogram?Doyouthinkpeoplemakemoreorfewermistakeswhenthey'reinahurry?Ifyoufindamistake,doyouhavetothrowouttheentireprogramandstartover?

6)VocabShmocabYoucanchoosetodotheseasaclass,orhavethestudentsdiscusswithanelbowpartnerandshare.

CLARIFICATIONS Herearesomeclarificationsthatneedtobesharedfromtimetotime:Onlyonepersonfromeachgroupcanbeattheimageatonetime.Itisokaytodiscussalgorithmswiththerestofthegroupinline,evenuptothepointofplanningwhoisgoingtowritewhatwhentheygettotheimage.Whenastudentdebugsaprogrambycrossingoutanincorrectinstruction,theymustalsocrossouttherestoftheprogramafterthat.Thiscountsastheirentireturn.Thenextplayerisallowedtocontinuefromthelastcorrectinstruction.

Whichoneofthesedefinitionsdidwelearnawordfortoday?"Toruborscrapeoutlettersorcharacters""Doingsomethingrepeatedlyinasimilarway""Findingandfixingproblemsinyouralgorithmorprogram"

...andwhatisthewordthatwelearned?Whichofthesethingscouldyoudebug?

*Thewronganswertoamathproblem*Atunafishsandwich*Twobasketsofpinecones

Explainwhyyouchoseyouranswer.

ASSESSMENT(10MIN)7)RelayProgrammingAssessment:Debugging

EXTENDEDLEARNINGUsetheseactivitiestoenhancestudentlearning.Theycanbeusedasoutsideofclassactivitiesorotherenrichment.Passthepaper

Ifyoudon'thavethetimeorroomforarelay,youcanhavestudentspassthepaperaroundtheirdeskgrouping,eachwritingonearrowbeforetheymovethepaperalong.

FillIt,MoveItAstheteacher,drawanimagewithasmanyfilledsquaresaschildrenineachgroup.Havethestudentswriteasmanyarrowsintheprogramasittakestogettoafilled-insquare(includingactuallyfillingthatsquarein)beforepassingtothenextperson.

DebuggingTogetherAstheteacher,drawanimageontheboard.Haveeachstudentcreateaprogramfortheimage.Askstudentstotradewiththeirelbowpartneranddebugeachother'scode.

Circlethefirstincorrectstep,thenpassitback.Givethestudentsanotherchancetoreviewanddebugtheirownwork.Askforavolunteertosharetheirprogram.

Howmanystudentshadthesameprogram?Anyonehavesomethingdifferent?