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1、AbstractTheinclusionoftopicsrelatingtotheexplorationofplanetswithinandoutsideoursolarsysteminhighschoolscienceclasseswillincreasestudents’interestinSTEMdisciplines.Thesetopicscanprovideacontextforlearningaboutterrestrialprocesseswhileatthesametimeinstillingasenseofaweinthestudentsas
2、aresultoftheirexposuretotheendlesspossibilitiesthatliewithintheuniverse.Oneofthemostexcitingpossibilitiesforhumankindisthatlifeexistsbeyondourownplanet.Thelevelofstudentinterestthatthistopicgeneratesprovidesanopportunitytoengagestudentsinclassactivitiesthathelpthemunderstandstellara
3、ndplanetbasedprocessesthatguidecurrentextraterrestriallifeseekingresearch.Starsprovidetheenergytofuellifeonourplanet,alongwiththeelementsusedtobuildthemoleculesthatarefundamentaltoalllivingthings.Thefirstactivityhasbeendesignedtohelpstudentsrelatestellarcharacteristicstothedevelopme
4、ntoflifeonaplanet.Inthisactivitytheconceptofa“HabitableZone”surroundingastarisintroduced.ScientistsestimatethatMarslieswithintheHabitableZoneofoursunbutdoesnotharborthediversityofcomplexlifeformsfoundonEarth.Inthesecondactivitystudentsareaskedtoresearchsomeofthephysicalcharacteristi
5、csofeachplanetalongwithsomeofthegeologicalandmeteorologicalprocessesthatoccuroneachplanetandidentifyhowthosedifferencesimpactthedevelopmentoflifeoneachplanet.Inthethirdactivitystudentswillresearchdifferentgroupsofterrestrialextremophiles.Thiswillhelpstudentstobetterunderstandhowtheb
6、oundariesoftherangeoftoleranceforlifehavebeenexpandedandhowthathasprovidednewhopethatlifecanbefoundonMars.Thefinalactivityhasbeendesignedtoconnectalltheconceptspresentedinthepreviousthreeactivities.Inthisactivitystudentswillbegivenasampleof“MartianWater”andperformaseriesofexperiment
7、stodetectthepresenceoflivingorganisms.TheactivityisdesignedtouseMarsasacontexttohelpstudentsimprovetheirunderstandingofthefunctionaldefinitionoflifeaswellasdesigningandperformingcontrolledscientificexperiments.BackgroundInformationTheactivitieshavebeendesignedtoreinforceconceptsthat
8、arenormallyincluded