STEMInnovator! Hello, STEMInnovator! STEM Innovator!STEM Innovator!
Welcometoyourbook! Welcometoyourbook!
Youarea YouareaSTEMInnovator STEMInnovator..AnInnovatorisaDesignerandan AnInnovatorisaDesignerandan Engineerwhousesdigitalprecisiontosolvetheworld'smost Engineerwhousesdigitalprecisiontosolvetheworld'smost complexchallenges! complexchallenges!
MeetYour MeetYour3DFabricationLab 3DFabricationLab..Insideyouhave: Insideyouhave:
TheWorkspace: TheWorkspace:Onshape,aprofessionalcloud-basedCADplatformto Onshape,aprofessionalcloud-basedCADplatformto buildyourideasina3Ddigitalworld. buildyourideasina3Ddigitalworld.
TheCreator: TheCreator:TheCrealityEnder-3V3 TheCrealityEnder-3V3SE,ahigh-performance3Dprinter SE,ahigh-performance3Dprinter tthatturnsyourdigitalfilesintophysicalobjects. hatturnsyourdigitalfilesintophysicalobjects.
TheMaterial: TheMaterial:PLAFilament,thebio-plasticthatlayerstogethertoform PLAFilament,thebio-plasticthatlayerstogethertoform yourinventions. yourinventions.
IInthisbook,youwill: nthisbook,youwill:
ModeltheScienceofLife ModeltheScienceofLifeby3DprintingaccurateDNA by3DprintingaccurateDNAandCellmodels andCellmodels ttovisualizehowb ovisualizehowbiologyiologyworks. works.
EngineerforSpace EngineerforSpacebydesigningandtestingcomponentsforMultibydesigningandtestingcomponentsforMultistageRockets. stageRockets.
Designfo DesignforSustainability rSustainabilitybycreatingWaterCollectorsandCompost bycreatingWaterCollectorsandCompost Binstoprotectourenvironmentmountofwater Binstoprotectourenvironmentmountofwater.
EarnYour EarnYourRewards! Rewards!
Asyoumastertheartof3Dmodelingandhardwarecalibration,youwillearn Asyoumastertheartof3Dmodelingandhardwarecalibration,youwillearn yourAdvancedInnovatorStickers yourAdvancedInnovatorStickers.
Attheendofthisjourney,youwillreceiveyour Attheendofthisjourney,youwillreceiveyourCertificateofInnovationof3D CertificateofInnovationof3D Design Designttoshowtheworldthatyouarea oshowtheworldthatyouareaMasterofModernEngineering! MasterofModernEngineering!
Let’sdesignandprintthefuturetogether! Let’sdesignandprintthefuturetogether!
UtilizingOnshape’scloud-basedparametricmodeling,youwillmastercomplex assembliesandmulti-partstudios.Thislevelbridgesthegapbetweendigital precisionandphysicalreality,leveragingthehigh-speedcapabilitiesofthe CrealityEnder-3V3SEtoprototypefunctionalsolutionsforreal-world engineeringchallenges.
KITCOMPONENTS KITCOMPONENTS
LEARNINGOBJECTIVES LEARNINGOBJECTIVES
Attheendofthislesson,learnerswillbeableto:
CreateandverifyanOnshapeeducationaccount
Startasketchonaplaneanddrawaclosedshape
UsetheDimensiontooltocontrolasketch
UseExtrudetocreatea3Dobject
Viewyourmodelfromdifferentangles
VOCABULARY VOCABULARY
MATERIALS MATERIALS
A2Ddrawingmadeonaflatplane
Atoolthatgivesthicknesstoa2Dsketch
ComputerwithInternet
Onshapeisa3Dmodellingsoftwareweusetodesign objectsfor3Dprintingandlasercutting.InOnshape: WHATISONSHAPE? WHATISONSHAPE?
IIMPORTANTIDEA
Every3DmodelinOnshapestartsthesameway:
Iftheshapeisnotclosed,itcannotbecome3D. Sketch Extrude Inspect Dimension
CreateYourOnshapeAccount
1.Goto:
https://www.onshape.com/en/education/sign-up GETTINGSTARTED GETTINGSTARTED
2.Createafreeeducationaccount.
3.VerifyyouremailandlogintoOnshape.
CreateaNewDocument
1.ClickCreate → Document.
2.Nameyourdocument:Lesson1–Box.
Youarenowreadytomakeyourfirstmodel.
Plane(Choosewheretodraw)
1.ClickSketch.
2.SelecttheFrontPlane.
3.PressNtolookatthesketchstraighton
Youcannotdrawinemptyspace. Aplaneisyourdrawingsurface.
Sketch(Drawtheshape)
1.SelecttheRectangletool.
2.Drawarectangleontheplane.
Lookcarefully
Theinsideturnsblue.Thismeansthe shapeisclosedandcanbecome3D Thismeanstheshapeisclosed.
Dimension(Controlthesize)
PressDforDimension. Clickthebottomline → type40mm → Enter. Clickasideline → type30mm → Enter.
Thelinesturnblack.Blacklinesmeanyoursketchisfully definedandcannotmovebyaccident.
ConfirmtheSketch
Clickthegreencheckmark. Youhavefinishedapropersketch.
Extrude(Makeit3D)
Onlyfullydefined(black)sketchesshouldbeturnedinto3Dobjects
1.ClickExtrude.
2.Selecttherectangle.
3.Setdepthto10mm.
4.Clickthegreencheckmark.
Inspect(Checkyourwork)
Checkthattheboxlookscorrectfromallsidesbeforeprinting
Rotatethemodelwithyourmouse. Usetheorientationcubeinthetopright LookattheTop,Front,andRightviews.
TRYITYOURSELF TRYITYOURSELF
Changethesizeofyourbox:
Makethelength60mm.Whatchanges?Whatstaysthesame?
Maketheheight50mm.Whatchanges?Whatstaysthesame?
Makethedepth20mm Whatchanges?Whatstaysthesame?
IINTRODUCTION NTRODUCTION
Plantandanimalcellshavedifferent partsthathelpthemdodifferentjobs.In thisproject,youwilluseOnshapeto build3Dmodelsofbothcells.By comparingtheirstructures,youwill understandhoweachpartsupportsthe cell’sfunction.
AccessibleEducation forEveryLearner
Over250millionpeople globallylivewithvisual impairment
DesigningCellsYou CanTouch BuildingScience, BuildingBelonging
DEFINETHEPROBLEM
Avisuallyimpairedstudentneedsa betterwaytolearnplantandanimal cellstructures,butflatimagesarehard tounderstand.
Youwillbeengineers!
Youwilldesign3Dcellmodelsthatcan beexploredbytouchtomakelearning clearandinclusive.
Forvisuallyimpaired learners,touchreplaces sight,makingSTEMtruly accessible
MATERIALS MATERIALS
BUILDTHEMODEL
Step1.Insertan imageofthecell modelintoa separatesketch forreference.You canhideand unhidethis sketchas neededforbetter visibility.
Step2. Createanew sketchona planeand drawthe outlineofthe cellbody usingthe "Spline"tool.
Step3. Extrudethe baseofthe cell.
Step4.Createa newsketchon thefaceofthe cellanddrawthe internalparts. Notethat rounded componentsare drawnashalfa curveorhalfa circlebecause “Revolve”toolwill beusedtomodel them.
Step5.Create anoffsetplane abovethetop planetosketch thenucleus. Drawahalfcircleanda straightlineto serveastheaxis fortherevolve operation.
Step6.Usethe"Revolve"tool toformtheNucleus.Select thehalf-circleastheprofile andthestraightlineasthe axis.
Step7.Drawthe remainingorganellesas showninthesample solution.Usethe "Transform"tooltocopy andpositionrepetitive shapesintheirrequired locations.
Toplantheanimalcelldiagram,completethetablebelowtohighlightthe differencesbetweenanimalandplantcells:
Now,applyyourmodelingknowledgefromPart1tocreateamodelofthe animalcellnexttoyourplantcellmodel.
THISISWHEREYOUUSEYOUROWNTHINKING! THIS IS WHERE YOU USE YOUR OWN THINKING! AIConnection: ManyAImodelscanprovidebasicOnshapeinstructions.ConsiderusingAI toassistindesigningyouranimalcellmodelwithproperlyscaled componentsrelativetoyourplantcellmodel
TEST
Gobacktothe'MeasureYourSuccess'sectionandcheckthe boxes.Doesyourprojectmeetallthecriteriaandconstraints?
SHAREANDIMPROVE
Taketurnspresentingsolutionswithanotherteam.Recordthefeedbackyou receive.
PartnerFeedback
Design
Strengths
Suggested Improvements
MATHANDSCIENCECONNECTION
Astudentiscreating3DCADmodelsofaplantcellandananimalcellfortheir biologyproject.Theywanttocomparethesurfaceareatovolumeratioofthe twomodels.
Theplantcellmodelisacubewithasidelengthl=8centimeters,andtheanimal cellmodelisaspherewitharadiusr=6centimeters.
1.Writeexpressionstocalculatethesurfacearea(SA)andvolume(V)ofeach cellmodel.
2.Calculatethesurfaceareaandvolumeofbothmodels.
3.Determinethesurfaceareatovolumeratioforeachcellmodel.
4.Comparethesurfaceareatovolumeratiosoftheplantandanimalcell models.Whatcanthestudentconcludeabouttherelativeproportionsof surfaceareatovolumeforthetwotypesofcells?
5.Giventhefollowingsets:{r,SA},{l,r},{SA,V}
a.Whichsetcontainsonlynaturalnumbers?
b.Whichsetcontainsnonaturalnumbers?
SUSTAINABILITYINFOCUS
QualityEducation(SDG4)aimstoensurethatalllearnershaveaccessto effective,engaging,andinclusivelearningexperiencesthatbuildreal understanding Thisincludes:
1.Howdoesaneclipsemodelhelpyourschool?Circlethecorrect answer.
FEEDBACK FEEDBACK
Completethefollowingsentenceandpracticesayingtoyourfriends:
Showyourprojectto3friendsandcollectstickers!
1.Ibuilta
Trymodelingandprintingthesolutionyourself Ifyouhavetrouble,referto theimagesbelowforguidance.
SAMPLESOLUTION
Themodelrepresentsacellwithlysosomes,mitochondria,andotherorganelles.
Plantcellmodel
Animalcellmodel
HEARTMODELKEYCHAIN
INTRODUCTION
Theheartispartofthecirculatorysystem, pumpingbloodtodeliveroxygenandnutrients throughoutthebody.ItworkswithArteries,Veins, andCapillariestotransportbloodefficiently, ensuringcellsgetwhattheyneed.
Therightsidepumpsoxygen-poorbloodtothe lungsforoxygenation,whiletheleftsidesends oxygen-richbloodthroughoutthebody,delivering nutrientsandremovingwaste.
Doctorsuseheartmodelstoexplainprocedureslikecoronarybypasssurgery, whichcreatesanewrouteforbloodwhenarteriesareblocked Theseblockages areoftencausedbyplaquebuildupfromhighcholesterol,smoking,andpoor dietchoices,includingtoomuchfat,salt,andsugar.Physicalmodelshelp patientsunderstandtherisksandbenefits,supportinginformeddecisions.
Heartmodelsalsoassistbioengineersinstudyingheartstructuretodevelop organoids lab-grown(putitinonelinebecauseitisoneword)hearttissues fromstemcells.Asmallheartmodelonakeychaincanserveasadailyreminder toeathealthilyandexerciseforhearthealth.
DEFINETHEPROBLEM
Adoctorwantstocreate akeychainmodelofthe humanhearttogiveto herpatientsasa remindertoeathealthily andexercise.Canyou help?
MEASUREYOURSUCCESS
VOCABULARY
Reviewthefollowingvocabularytermsanddefinitionsthatyouwillencounter throughoutthischallenge.
DXF
Themajorbloodvesselthatcarriesoxygenatedblood fromthehearttotherestofthebody. Bloodvesselsthatcarrydeoxygenatedbloodfromthe bodybacktotheheart.
A2DvectorfilecommonlyusedinCAD. Atoolusedtoscale,rotate,andmoveasketch.
Aorta
Transform Veins
GETTINGSTARTED
Step1.LogintoyourOnshape account.
Step2.ClickCreate->Document
Step3.Namethefile”Project2: HeartModelKeychain”
BUILDTHEMODEL
Step4.Clickonthe“Top” planeuntilitturnsyellow, thenselect“Sketch”inthe upperleftcornertocreate anewsketchonthatplane.
Step5.Import theDXFfilefor theanatomical heartoutlineby searchingfor “InsertDXFor DWG”.
Then,Click"Import", uploadthe Heart _ outline.dxf file.Clickthefile, thenselectitand clickthegreen checkmarktoadd ittothesketch.
Step6.Zoomout usingatwo-finger scrolltoviewthe fulloutline.
Step7.Extrudetheheartoutlinetoa12.5"thickness.Thiswillbeadjustedwhen scaling.
Step8. Usethe"Transform"tooltoscaletheheartdownto0.02x.Ifthe Transformtoolisnotvisibleinthetoolbar,searchforitusing"Searchtools..." inthetoprightcorner.
Step9. ApplyanotherTransformtomovethe hearttotheoriginusingthe“TranslatebyXYZ” arrows.
Step10. Createanew sketchonthetop planeanddrawa4”by 3”ellipsearoundthe heartdesign.Usethe Dimensiontooltoset thesizebyselecting theellipse'srightand topedges
Step11. Extrudethe ellipsetoa0.3” thickness,ensuringit makesconnectswith theheartdesign.This ensurethe3Dprint willbeasinglepiece. Whenreadytoprint, exportthemodelas anSTLfile.
THISISWHEREYOUUSEYOUROWNTHINKING! THIS IS WHERE YOU USE YOUR OWN THINKING!
Createaholethroughtheaortaloopsforakeychainring.Checkyour keychainfrommultipleanglestoensureitturnedoutasintended.
TEST
Gobacktothe'MeasureYourSuccess'sectionandcheckthe boxes Doesyourprojectmeetallthecriteriaandconstraints?
SHAREANDIMPROVE
Taketurnspresentingsolutionswithanotherteam.Recordthefeedbackyou receive.
PartnerFeedback
Design Strengths Suggested Improvements
MATHANDSCIENCECONNECTION
1.Biomedicalengineerswanttocreateatableofmodelscalevaluesfordifferent heartmodelsizes.Helpthemfillinthevaluesusingfractions,decimals,and percentages.
2.Thevolumeintheleftandrightheartchambersincreasesbyapproximately 10%duringdiastole,whenthechambersfillwithblood,intheheartbeatcycle The volumeofanellipsoidcanbefoundwithusingequation:V=πab ,whereaisthe majoraxisandbistheminoraxis,assumingtheellipsoidissymmetric.
a.Findthenewvolumeoftheellipsoidswitha10%increase.
b.Ifthemajoraxis(a)remainsconstant,solvefortheminoraxis(b)thatwill yieldthenewvolume.
REFLECT
SUSTAINABILITYINFOCUS
GoodHealthandWell-Being(SDG3)aimstomakesurepeoplecanlive healthylivesandunderstandhowtotakecareoftheirbodies,bothphysically andmentally.Thisincludes:
Trymodelingandprintingthesolutionyourself.Ifyouhavetrouble,referto theimagebelowforguidance.
SAMPLESOLUTION
Theheartmodelkeychaindisplaystheanatomicalfeaturesofaheartand includesaholeforakeyring.
C E R T I F I C A T E O F I N N O V A T I O N C E R T I F I C A T E O F I N N O V A T I O N C E R T I F I C A T E O F I N N O V A T I O N C E R T I F I C A T E O F I N N O V A T I O N
I c a n B u i l d . I c a n C o d e . I c a n S h a r e . I a m a n I n n o v a t o r !
