Ia Student Guide

7/27/2019 Ia Student Guide

1/24

IBHL

&

AP

CHEMISTRY

InternalAssessment

STUDENTGUIDE


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2 | P a g e | IB (IA) Student Guided

INTERNALASSESSMENT(IA)

IntroductionTheInternalAssessment(IA)consistsofaninterdisciplinaryproject,amixtureofshort andlongterminvestigations(suchaspracticalsandsubjectspecific

projects).StudentworkisinternallyassessedbytheteacherandexternallymoderatedbytheIBO.TheperformanceinIAisjudgedagainstassessmentcriteria

eachconsistingofachievementlevels03.

IATimeAllocationHigherlevelstudentsarerequiredtospend60hours,onpracticalactivities(excludingtimespentwritingupwork).Thesetimesinclude10to15hoursforthe

group4project.Only23hoursofinvestigativeworkcanbecarriedoutafterthedeadlineforsubmissionofworktothemoderatorandstillbecountedinthe

totalhoursforthepracticalschemeofwork.

CriteriaandAspectsTherearefiveassessmentcriteriathatareusedtoassesstheworkofbothSLandHLstudents.

DesignD

DatacollectionandprocessingDCP

ConclusionandevaluationCE

ManipulativeskillsMS

PersonalskillsPS

Thefirstthreecriteriadesign(D),datacollectionandprocessing(DCP)andconclusionandevaluation(CE)areeachassessedtwice.Manipulativeskills(MS)

areassessed

summatively

over

the

whole

course

and

the

assessment

should

be

based

on

awide

range

of

manipulative

skills.

Personal

skills

(PS)

are

assessed

onceonlyandthisshouldbeduringthegroup4project.Eachoftheassessmentcriteriacanbeseparatedintothreeaspectsasshowninthefollowingsections.

Descriptionsareprovidedtoindicatewhatisexpectedinordertomeettherequirementsofagivenaspectcompletely(c)andpartially(p).Adescriptionisalso

givenforcircumstancesinwhichtherequirementsarenotsatisfied,notatall(n).Acompleteisawarded2marks,apartial1markandanotatall0

marks.Themaximummarkforeachcriterionis6(representingthreecompletes).

D2= 12

DCP2=12

CE2= 12

MS1= 6

PS1= 6

Thismakesatotalmarkoutof48.

Themarksforeachofthecriteriaareaddedtogethertodeterminethefinalmarkoutof48fortheIAcomponent.ThisisthenscaledatIBCAtogiveatotaloutof24%.


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LaboratoryExperimentGradingRubric

Name__________________________________________________ Block_______________Date:__________________Hours:_______________

Titleof

Experiment:

_________________________________________________________

Topic

____________________________________________

AssessmentCriteriatobeGraded

MS DCP CE D

X

ManipulativeSkills

Complete/2 Partial/1 Notatall/0 Earned

Following

instructions

Followsinstructionsaccurately,

adaptingtonewcircumstances

(seekingassistancewhenrequired).

Followsinstructionsbutrequires

assistance.

Rarelyfollowsinstructionsorrequires

constantsupervision.

Carryingout

techniques

Competentandmethodicalinthe

useofarangeoftechniquesand

equipment.

Usuallycompetentandmethodicalin

theuseofarangeoftechniquesand

equipment.

Rarelycompetentandmethodicalin

theuseofarangeoftechniquesand

equipment.

Workingsafely Paysattentiontosafetyissues. Usuallypaysattention

tosafetyissues.

Rarelypaysattentiontosafetyissues.

Suggested

Improvements


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DataCollectionandProcessing


Recordingraw

data

Recordsappropriatequantitative

andassociatedqualitativerawdata,

includingunits

and

uncertainties

whererelevant.

Recordsappropriatequantitativeand

associatedqualitativerawdata,but

withsome

mistakes

or

omissions.

Doesnotrecordanyappropriate

quantitativerawdataorrawdatais

incomprehensible.

Processingraw

data

Processesthequantitativerawdata

correctly.

Processesquantitativerawdata,but

withsomemistakesand/oromissions.

Noprocessingofquantitativerawdata

iscarriedoutormajormistakesare

madeinprocessing.

Presenting

processed

data

Presentsprocesseddata

appropriatelyand,whererelevant,

includeserrors

and

uncertainties.

Presentsprocesseddataappropriately,

butwithsomemistakesand/or

omissions.

Presentsprocesseddata

inappropriatelyorincomprehensibly.

Suggested

Improvements

ConclusionandEvaluation


Concluding Statesaconclusion,withjustification,

basedon

areasonable

interpretation

ofthedata.

Statesaconclusionbasedona

reasonableinterpretation

of

the

data.

Statesnoconclusionortheconclusion

isbased

on

an

unreasonable

interpretationofthedata.

Evaluating

procedure(s)

Evaluatesweaknessesand

limitations.

Identifiessomeweaknessesand

limitations,buttheevaluationisweak

ormissing.

Identifiesirrelevantweaknessesand

limitations.

Improvingthe

investigation

Suggestsrealisticimprovementsin

respectofidentifiedweaknessesand

limitations.

Suggestsonlysuperficial

improvements.

Suggestsunrealisticimprovements.

Suggested

Improvements


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5 |P a g e

| IB (IA) Student Guided

Design


Definingthe

problem

andselecting

variables

Formulatesafocused

problem/researchquestionand

identifiesthe

relevant

variables.

Formulatesaproblem/research

questionthatisincompleteor

identifiesonly

some

relevant

variables.

Doesnotidentifyaproblem/research

questionanddoesnotidentifyany

relevantvariables.

Controlling

variables

Designsamethodfortheeffective

controlofthevariables.

Designsamethodthatmakessome

attempttocontrolthevariables.

Designsamethodthatdoesnotcontrol

thevariables.

Developinga

method

for

collection

of

data

Developsamethodthatallowsfor

thecollectionofsufficientrelevant

data.

Developsamethodthatallowsforthe

collectionofinsufficientrelevant

data.

Developsamethodthatdoesnotallow

foranyrelevantdatatobecollected.

Suggested

Improvements

earned points 20 = points

total possible points =____________ assessmentcriteriapoints

NeatandCorrectFormat=5points

LaboratoryNotes=5points

DataCollection&Processing=10points

ConclusionandEvaluation=10points

AssessmentCriteria=20points

TOTAL


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6 |P a g e

| IB (IA) Student Guided

TypedLaboratoryReportFormat

TypedReportessentials

(Top

left)

Name Topic

(Top

right)

Date(month/day/year) NumberofHours

(

Title

Centeronlineafterheading Descriptiveandoriginal

I. Introduction

ResearchQuestion/Problemstatement Hypothesis Variables

II.Procedures&Materials

Materials/Apparatus Procedure Diagramofsetup

III.DataCollectionandPresentation

Observations DataTable

IV.DataProcessingandPresentation

Calculations Graphs Diagrams

V.Conclusion

and

Evaluation

Conclusion Compareresultstotheliterature Evaluationofprocedure Weaknessesandrealisticsuggestiontoimproveexperiment

Jane Smith February 2, 2008Stoichiometry 2 hours

HYDRATESI. IntroductionII. Procedure and MaterialsIII. Data CollectionIV. Data Processing:V. Conclusion and Evaluation:

TitlethesectionsIthroughVinyourreport.


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DATACOLLECTION

Aspects Comments

Recordsappropriaterawdata(qualitativeand/orquantitative),includingunitsanduncertaintieswherenecessary.

RecordALLrelevantdataandobservations Includequantitativedata(e.g.,measurementsoftemperature,mass,volume,absorbance,pressureall

withtheappropriateunits)

Includequalitativeobservations(e.g.thefinalcolorattheendpointwasafaintpink,duringthereaction,thebrominewaterchangedfrombeingabrightyellowtosolutionofnocolor).

Reportanychangesinprocedureorunusualconditions. Alldatarecordedshouldbetothegreatestpossiblenumberofsignificantfiguresthattheaccuracyofthe

equipmentallows.

Consideruncertaintiesanderrorsinyourmeasurementsanddealwithitproperly(SeeAppendixA)Presentsrawdataclearly,allowingforeasyinterpretation Makesurethatsomeoneelsecouldunderstandexactlywhatyourdatameans. Do not include deductions/ interpretations/inferences, although you may find it easier to present

deductionsandinterpretationsalongsidetheobservations.

Yourpresentationshouldbemethodicalandlogical. Alltablesandgraphsshouldbeclearlyidentifiedandlabeled.


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Comparedirectionandmagnitudeofpossibleerrorswiththeobservederror. Sourcesoferrorsuchasspillsshouldhavebeennotedinobservations.

Limitationsofconclusions

Aretestsconclusive?Areotherinterpretationspossible? Takeaccountofmagnitudesoferrorsanduncertaintiesinconsideringthereliabilitiesandlimitationsofconclusions.

SuggestionsforImprovement

Suggestimprovementsorfixesfortheweaknessesyouidentifiedintheprevioussection. Thesesuggestionsshouldberealistic,keepinginmindthetypeof

equipmentnormallyfoundinhighschoolorcollegegeneralchemistrylabs. Suggestionsshouldfocusonspecificpiecesofequipmentortechniquesyouused.

(VaguecommentssuchasWeshouldhaveworkedmorecarefullyorIshouldhavebeengivenabettercalorimeterwon'tcutit!Foridentifiedweaknesses,

suggestimprovements

Suggestionsshouldberealistic,notinvolvingunavailableequipment Suggestionsshouldbespecific(notmorecarefulwork) Proposedchangesmaydoanyorallofthefollowing Eliminateorreduceerrors Improvecontrolofvariables Reduceapproximations Provideotherproceduresforbettermeasurements. Stateifmodificationsareunnecessaryorimpossible(standardproceduresused)


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DESIGN:Aspects Comments

Formulatesafocused

problem/research

questionandidentifies

therelevant

variables.

Expectanopenendedproblemfromtheteacher

Usethetitle"researchquestion Donotjustrepeattheteacherstitle Indicatewhatspecificaspectofthe

generalproblemyouwillbe

investigating

Hypothesisisatestablestatementthatpredictstherelationshipofthe

independent

and

dependent

variables.

Itshouldbespecificanddetailedusingscientificknowledge.

Thisshouldbequantitativeifyou'rehypothesiscallsforit.(Forhigherlevel,youmaybeexpectedtogointoquantitativedetails)

Usuallyintheformifyisdone,thenzwill

occur

Itshouldbeaslongasisneeded.Designsamethodforthe

effectivecontrolofthe

variables. Independentvariable isthevariable

thatyouchange

Dependentvariable isthevariablethatrespondstowhatyouhave

alreadychanged

Controlledvariables arethevariablesthatremainthesame,thethingsthat

youfixinordertomaintainafairtest.


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DESIGN

Aspects Comments

Controllingvariables

Develops

amethod

that

allowsforthecollectionofsufficientrelevant

data.

Includeacomprehensivelistofeverythingthatyouuse apparatus,chemicals,reagentsetc. Yourlistmustincludeunits,uncertainty,sizesandaccurateconcentrations Drawadetaileddiagramofanysetup

Writethedetailsofaprocedureinchronologicalordernumberlistorparagraphform. Statepreciselyhowyouwillvarytheindependentvariable Statehowyouaregoingtomeasureorobservethedependentvariable Indicatehowmanyreplicateswillbemade. Itisalsoimportanttooutlinewhyoneapproachistakenversusanother,ifappropriate Stateclearlyandexactlywhatyouwilldosothatanyotherstudentcouldfollowyourplan Statewhatnumberandrangeofmeasurementsyouwilluse Includehowmanydifferentandsuitablereadingsyouneed Takeintoaccountthefactthatyouaretryingtocollectpreciseandreliabledata


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TreatmentofErrorandUncertaintyinChemistryMeasurements/HowtodoErrorAnalysisaselfteachingguide

1. Inscience,wearealwaysseekingtobetterunderstandtheworldaroundus. Wedothisbydesigningandcarryingoutexperimentsaccordingtothescientific

method. Andintheseexperiments,weareoftenconcernedwithmeasuringsomethingcomingupwithanumericalvalueforsomepropertyorbehaviorwe

observe. Eventually,ifwecaninterpretandmakesenseofallthesemeasurements,wemightproposeascientificlawthatallowsustopredictthevaluesin

futurecases

without

actually

having

to

conduct

the

experiment

each

time.

2. Butittakesworkandeffort,oftentrialanderror,todesigngoodexperiments. Andeveninawelldesignedexperiment,itisimpossibletomakeabsolutely

perfectmeasurements. Therearetwotypesoferrororuncertaintythatwillalwayslimittheprecisionandtheaccuracyofourresults. Thetwotypesarecalled

randomerrorandsystematicerror.

1. Randomerrors relatedintakingmeasurementsonimperfecttools(balances,cylinders,etc) canbeestimatedandthedegreeoferrorcanbecalculated. arerelatedtoinsufficientlycontrolledvariationsinexperimental

conditions

Affectprecision,butnotaccuracy Cannotbeeliminated

2. Systematicerror Usuallyarerelatedtoimproperexperimentaldesignoradjustmentofexperimentalapparatus. Sometimerelatedtoaparticularmethod. Theseerrorssystematicallydistorttheobservations. donotaffectprecision,andcan,intheory,beeliminated.

Examples:

Stickingorleakinggassyringes. CalibrationerrorsinpHmeters. Stopclockrunninglow. Changesinexternalinfluencessuchastemperatureandatmosphericpressureaffectthemeasurementofgasvolumes,etc. Personalerrorssuchasreadingscalesincorrectly. Unaccountedheatloss. Liquidsevaporating.


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USINGSIGNIFICANTFIGURES

Thenumberofsignificantfiguresinanumericalresultisanindicationoftheacceptederrorinanumber.Incountingthenumberofsignificantfiguresthe

problemisthedigitzero(0).Therearefiverulesusedincountingthenumberofsignificantfiguresinanumber:

1.Allnonzerodigitsaresignificant,

e.g.,12.3hasthreesignificantfiguresand549hasthreesignificantfigures.

2.Zeros

between

non

zero

digits

are

significant,

e.g.,1.03hasthreesignificantfiguresand4023hasfoursignificantfigures.

3.Zerosattheendofanumberaresignificant,

Fornumberswithdecimalpoints,zerostotherightofanon zerodigitaresignificant.E.g.,2.00hasthreesignificantfigures,but0.050hastwo(the5&

0inthesecondandthirddecimalplaces).

4.Zerostotheleftofthefirstnonzerodigitarenotsignificant,e.g.,0.84hastwosignificantfigures:eightandfour.Thezeroistermedaplaceholder,

meaningthezeroisnotpartofthemeasurement,i.e.,itisnotsignificant.

5.Zerosattheendofanumberwithoutadecimalpointareambiguous,

e.g.,80

may

have

two

significant

figures

or

it

may

have

one

the

eight

with

the

zero

being

aplace

holder.

Only

the

person

who

carried

out

the

measurementwouldknow.Theambiguitycanberemovedbyreportingsuchnumbersinscientificorstandardnotation.Writing80as8101meansthat

onlyonesignificantfigureispresent,whilewritingitas8.0101

meansthattwosignificantfiguresarepresent.

6.Manyphysicalconstants,haveaverylargenumberofdigits,e.g.,thespeedoflightinavacuum,c(299792458ms1).(assumeinfinite)

7.Mathematicalconstants,e.g.,anumbersuchaspi( )hasaninfinitenumberofdigits

8.Logarithmscanonlyretainintheirmantissathesamenumberofsignificantfiguresasthereareinthenumberwhoselogarithmyouaretaking.

ROUNDINGOFF

Sometimesit

is

necessary

to

round

off,

to

give

the

correct

number

of

significant

figures.

1.Adigitof5orlargerroundsup.

2.Adigitsmallerthan5roundsdown.

Forexample,rounding13.654tothreesignificantfiguresgives13.7(the4isignored,the5roundsup). Forexample,rounding13.246tothreesignificantfiguresgives13.2(the6isignored,the4roundsdown).


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WORKEDEXAMPLE

Inanexperimenttomeasuretheenthalpychangeofreactionthefollowingmeasurementsweremade:

massofwater=58.0000.0005g

temperaturechangeofwater=12.50.05C

Heatreleased

=mass

of

water

specific

heat

capacity

of

water

change

in

temperature

=58.000g4.184Jg1C112.5C=3033.4J

Thetemperaturechangewastheleastprecisemeasurement(threesignificantfigures)sotheresultcannotbeexpressedashavingmorethanthreesignificant

figures.Thereforetheansweris3030Jor,betterstill,3.03103Jandnot3033.4J.

Itisunacceptabletoreportvalueswithmoresignificantfiguresthanindicatedbytheassociateduncertainty. Forexample,in8.370.2cmthesevenhasno

meaningandthelengthshouldbereportedas8.30.2cm.

TREATMENTOFUNCERTAINTIESINCALCULATIONS

Duringan

experiment

there

will

be

anumber

of

uncertainties

which

will

have

to

be

considered

to

give

the

overall

uncertainty.

This

is

known

as

the

propagation

ofuncertainties.

1. ADDINGORSUBTRACTINGMEASUREDQUANTITIESWITHASSOCIATEDUNCERTAINTIES

Themaximumabsoluteuncertaintyisthesumoftheindividualuncertainties

Dealingwithuncertaintieswhenonevalueisbeingsubtractedfromanother

WORKEDEXAMPLE

Ifthevaluesoftwotemperaturesare36.30.1Cand56.30.1C,findthedifference.

Wefirst

subtract

the

nominal

values

(56.3

36.3)

=20.0

C.

Then,theabsoluteuncertaintiesare0.1and0.1,soweaddthese,(0.1+0.1)=0.2.

Thefinalansweris20.00.2C.

Dealingwithuncertaintieswhenonevalueisbeingaddedtoanother

WORKEDEXAMPLE

Ifthevaluesoftwotemperaturesare36.30.1Cand56.30.3C,findthesum.

Wefirstaddthenominalvalues(56.3+36.3)=92.6C.

Theabsolute

uncertainties

are

0.3

and

0.1,

so

we

add

these,

0.3

+0.1

=0.4.

Thefinalansweris92.60.4C.

Theruleforbothexamplesaboveistoaddabsoluteuncertainties.


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2. MULTIPLYINGORDIVIDINGMEASUREDQUANTITIESWITHASSOCIATEDUNCERTAINTIES

Ifuncertaintiesaretobemultipliedordividedthenpercentageuncertaintieshavetobeused(totakeintoaccountthatthephysicalquantitieswillhave

differentunits).Themaximumpercentageuncertaintyisthesumofthepercentageuncertaintiesforeachoftheindividualquantities.

WORKEDEXAMPLE

Ifwe

want

to

calculate

the

power

developed

during

an

energy

change

of

44.01

0.05

J,

and

the

time

over

which

it

occurred,

namely

2.10

0.05

s,

we

:1.takeeachoftheuncertainties,

2.divideitbythegivenvalue,andthen,

3.multiplyby100toobtainapercentage.

Inthiscase,for44.010.05Jwehave:0.05

100 = 0.11%44.01

For2.10

0.05

swe

have:

0.05

100 = 2.38%2.10 Thetwopercentageuncertaintiesarethenadded:(0.11%+2.38%)=2.49%

So,-1(44.01 0.05) J 44.01= 2.49% = 20.96 Js 2.49

(2.10 0.05) s 2.10

Now,wedetermine2.49%of20.96:2.49

20.96 = 0.52100

So,ourfinalansweris,20.960.52Js1or(20.960.52)Js1.

Notethat

the

relative

uncertainty

must

be

converted

back

into

an

absolute

uncertainty:

i.e.,21Js12.5%=0.52,buttoonesignificantdigiti.e.0.5sinceuncertaintiesarethemselvesapproximateandarenotgiventomorethanonesignificant

figure.

Therefore.1(44.01 0.05) J = 21.0 0.5Js

(2.10 0.05) s

Theruleistoconverttheabsoluteuncertaintiestopercentageuncertainties,thenconvertthem

backtoanabsoluteuncertaintyafterthecalculation.


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WORKEDEXAMPLE(THERMOCHEMISTRY)

Theheatcapacityofacoppercanis501JK1andinanexperimentatemperatureriseof4.00.2Cisobtained.

Theuncertaintyintheheatcapacityis1JK1,inpercentageterms=.1

100 = 2 %50

Thepercentage

uncertainty

in

the

temperature

reading

is

0.2

100 = 5 %4.0 So,themaximumpercentageuncertaintyis(2%+5%)=7%

Now,heatenergyreleased =heatcapacityofcoppercantemperaturerise

=(504.0)J7%=2007%=(20014)J

(Note,7%of200is14.)

Theanswerisbestexpressedinscientificnotation:(2.00.14)102J=(2.00.1)102J

BASICRULESFORPROPAGATIONOFUNCERTAINTIES

Rule Example1 Whenaddingorsubtractinguncertainvalues,addtheabsolute

uncertainties

Initialtemp.=34.50C(0.05)FinalTemp.=45.21C(0.05)

T=45.21 34.5=10.71C

(0.05+0.05=0.1C)

Tshouldbereportedas

10.70.1C

2

Whenmultiplying

or

dividing

add

the

percentage

uncertainties

Mass

=9.24

g(0.005g)

Volume=14.1cm3(0.05cm3)

a Makecalculations Density=9.24/14.1=0.655g/cm3

bConvertabsoluteuncertaintiestopercentage/fractional/

relativeuncertainties

Mass:0.005/9.24x100=0.054%

Vol:0.05/14.1x100=0.35%

c Addpercentageuncertainties0.054+0.35=0.40%

Density=0.655g/cm3(0.40%)

d Converttotaluncertaintybacktoabsoluteuncertainty0.655*0.4/100=0.00262

Density=0.6550.003g/cm3

3 Multiplyingordividingbyapure(whole)number:

multiplyordividetheuncertaintybythatnumber. 4.950.05x10=49.50.5


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4 Powers:

Whenraisingtothenthpower,multiplythe%uncertaintybyn.

Whenextractingthenthroot,dividethe%uncertaintybyn.

(4.3.5cm)3=4.33(.5/4.3)*3

=79.5cm3(0.349%)

=79.50.3cm3

5 Graphing

Graphingis

an

excellent

way

to

average

arange

of

values.

When

arange

of

values

is

plotted

each

point

should

have

error

bars

drawn

on

it.

The

size

ofthebariscalculatedfromtheuncertaintyduetorandomerrors.Anylinethatisdrawnshouldbewithintheerrorbarsofeachpoint.

Ifitisnotpossibletodrawalineofbestfitwithintheerrorbarsthenthesystematicerrorsaregreaterthantherandomerrors.

Rate of Reaction

0

2

4

6

8

10

12

14

16

0 1 2 3 4 5 6

time (seconds)

concentration(Molarity)


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PrecisionandUncertaintiesforCommonLabEquipment

Whenyourecordascientificmeasurement,thelastdigitthatyourecordisunderstoodtohavesomeuncertainty,andtobeyourbestestimate. Whenreading

nonelectronicdevicessuchasrulers,thermometers,andglassware,thegeneralruleofthumbisto"readbetweenthelines"! Thismeansthatyoucanestimateonemoredigitordecimalplacethanthedeviceismarked. ButthisruledoesNOTAPPLYtoelectronicequipment(suchasabalanceorelectronicthermometer)whichgivesyouadirectdigitalreadout. Forthesedigitaldevices,yourteacherwillprovideyoutheprecisionoftheinstrument.

Thefollowing

uncertainties

apply

to

careful

measurements

made

by

atrained

observer:

Length(commonmetricrulers): +/ 0.01cm(or0.1mm)

Mass(electronicbalances): always+/ oneunitinthelastdigit. Thismeansthatacommoncentigrambalanceis+/ 0.01grams;amilligrambalance+/ 0.001

grams.

VolumetricGlassware

10mLgraduatedcylinder: +/ 0.02mL(alwaysrecordto2decimalplaces) 25mLgraduatedcylinder: +/ 0.1mL(alwaysrecordto1decimalplaces) 100mLgraduatedcylinder: +/ 0.5mL(alwaysrecordto1decimalplace) 500mLgraduatedcylinder: +/ 5mL 50mLburet: +/ 0.02mL(alwaysrecordto2decimalplaces) 10mLgraduatedpipet:+/ 0.01mL (alwaysrecordto2decimalplaces) Fixedvolumepipets(glass): +/ 0.2%ofthecapacity (Ex: 25mL=+/ 0.05mL)

BeakersandFlasks: Approximately5%ofthecapacity. (Butofcourse,youwouldneveruseoneofthesetomeasureapreciseamountofliquid,wouldyou?)

Thermometer

(alcoholormercury): +/ 0.2oC TICBLtemperatureprobe: +/ 0.1oC

pHMeasurements

pHpaper: +/ 1pHunit (pHpapergivesa"quickanddirty"estimate) TICBLpHprobe: +/ 0.1pHunits(eventhoughitreadsoutto0.01).

pressure

TICBLpressureprobe: +/ 2kPa(eventhoughitmayreadouttodecimalplaces)


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GROUP4PROJECT

TheGroupIVProjectistoemphasizeinterdisciplinarycooperationandtheprocessesinvolvedinscientificinvestigationratherthantheproductsofsuchinvestigation.Ascientificinvestigationrequiresthataproblemshouldbeidentified.Ananswer(hypothesis)isproposedandresearchtakesplacetotest

thevalidityofthehypothesis.Scientificresearchshouldbemethodicalandlogical.

INTERDISCIPLINARY

Allthesciencesareinvolved(i.e.alltheIBstudents)

Allwillbeworkingonthesametheme.

Allwillbeinvestigatingthesameproblemfromdifferentperspectives.

TEAMWORK

Youwillbeworkingaspartofateamof3to4students.Thismeansthatyourpersonalskillswillbetested.

PersonalSkillsGroup4Project

Complete/2

Partial/1

Notat

all/0

Earned

Selfmotivation

and

perseverance

Approachestheprojectwithself

motivationandfollowsitthrough

tocompletion.

Completestheprojectbutsometimes

lacksselfmotivation.

Lacksperseveranceandmotivation.

Workingwithina

team

Collaboratesandcommunicatesina

groupsituationandintegratesthe

views

of

others.

Exchangessomeviewsbutrequires

guidancetocollaboratewithothers.

Makeslittleornoattemptto

collaborateinagroupsituation.

Selfreflection Showsathoroughawarenessof

theirownstrengthsandweaknesses

andgivesthoughtfulconsideration

totheirlearningexperience.

Showslimitedawarenessoftheir

ownstrengthsandweaknessesand

givessomeconsiderationtotheir

learningexperience.

Showsnoawarenessoftheirown

strengthsandweaknessesandgivesno

considerationtotheirlearning

experience.

WHATKINDOFPROBLEM?

Thechoiceofproblemtoinvestigateshouldhavemoral,ethical,social,economicorenvironmentalimplications. Itshouldbeaproblemwhichprovidesenough

scopeforallthedifferentsciencegroups.

WHATKINDOFPROJECT?

Theprojectwillbeselectedbythestudents.Itisyouridea.

Needlesstosaytheteacherswillbeonhandtogiveadviceconcerningfeasibilityintermsoftimeandmaterials,safetyandethics.

Theprojectmayhaveahandsonpracticalactionphaseoroneinvolvingpurelytheoreticalaspects.Itcouldbeundertakeninawiderangeofways.


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Sources:

http://occ.ibo.org ChemistryGuide,InternalAssessment

http://occ.ibo.org ChemistryResourcebyRuthSanderson

http://occ.ibo.org ChemistryResourcebyJulieSykes

http://home.comcast.net/~christylthomas/aplaberrors.pdf#search='types%20of%20errors%20chemistry'

http://dbhs.wvusd.k12.ca.us/webdocs/SigFigs/SigFigRules.html

http://www.colby.edu/chemistry/PChem/scripts/error.html

http://www.mwiseman.com/courses/chem_ib/units/unit01.jsp;APChemistryLabManualPalmHarbor

UniversityHS,Florida;Chem%20Lab%20Manual%20Sample%20Pages;t

teacherweb.capousd.org/custom/WMRedding/Internal%20Assessment%20Guide.doc

Documents

Ia Student Guide