G1 Camino Software-Mediated Mathematical Modeling

7/31/2019 G1 Camino Software-Mediated Mathematical Modeling

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SOFTWARESOFTWARE --MEDIATED MATHEMATICALMEDIATED MATHEMATICAL

MODELING OF PSYCHOMETRIC PRINCIPLESMODELING OF PSYCHOMETRIC PRINCIPLESIN AID OF RATIONAL AND EXPEDITOUSIN AID OF RATIONAL AND EXPEDITOUSCOMPUTATION OF GRADESCOMPUTATION OF GRADES

Honesto Odi CaminoHonesto Odi CaminoPolytechnic University of the PhilippinesPolytechnic University of the Philippines

Mulanay CampusMulanay Campus

22 ndnd International Conference onInternational Conference onEducational Measurement and EvaluationEducational Measurement and Evaluation

TradersTraders Hotel, ManilaHotel, ManilaAugust 9August 9 --11, 201211, 2012


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Background of the PaperBackground of the Paperan attempt to address the perennial an attempt to address the perennial problem of laborious grade problem of laborious grade computation that inevitably results to computation that inevitably results to delayed submission of grades.delayed submission of grades.


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Background of the paperBackground of the paperderiving different formulas to offer deriving different formulas to offer methods of computing grades that fit methods of computing grades that fit the institution's or individual's policies the institution's or individual's policies on grading based on some on grading based on some psychometric principles psychometric principles


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Background of the PaperBackground of the Paperdemonstrating how a readily available demonstrating how a readily available and user friendly software package can and user friendly software package can expedite or facilitate the computation expedite or facilitate the computation using the derived formulas.using the derived formulas.


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IntroductionIntroductionGradingGrading -- with the end view ofwith the end view ofcommunicating information about thecommunicating information about thestudentsstudents mastery of the subject matter.mastery of the subject matter.


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IntroductionIntroductionOn the surface, grading is a technical job.On the surface, grading is a technical job.

Grading has moral underpinnings whichGrading has moral underpinnings which

maybe unknown to some of those whomaybe unknown to some of those whograde students, thus leading them tograde students, thus leading them tocommit unfair practice which are alsocommit unfair practice which are also

violative of professional duties to theviolative of professional duties to thestudents.students.


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IntroductionIntroductionunfair practices:unfair practices:

There are several but this paper tackles twoThere are several but this paper tackles two

of them. They are: (1) partiality andof them. They are: (1) partiality andinconsistency in grading, and, as ainconsistency in grading, and, as aconsequence of this; (2) delayed or lateconsequence of this; (2) delayed or late

submission of grades.submission of grades.


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IntroductionIntroductionPartiality and inconsistency :Partiality and inconsistency :

1) variations in the formulas used in1) variations in the formulas used in

computing grades of student belonging tocomputing grades of student belonging tothe same group.the same group.

2) uneven calibration or scaling of the2) uneven calibration or scaling of theformulas or unsystematic methods used informulas or unsystematic methods used in

grade computation.grade computation.


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IntroductionIntroductionUsing various formulas for the same set/sUsing various formulas for the same set/sof students makes computing laboriousof students makes computing laboriousand cumbersome, thus delayingand cumbersome, thus delayingcomputation that results to late submissioncomputation that results to late submissionof grades.of grades.


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Principles of Fair Grade ComputationPrinciples of Fair Grade Computation

Impartiality & Consistency Meritoracy Typicality

Psychometric Principles

Norm-ReferencingCriterion-ReferencingScaled Distribution

Rational Grade Computation


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Scaled DistributionScaled Distribution

linear transformation of raw scores usinglinear transformation of raw scores using

uniform units of measurementuniform units of measurement


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CriterionCriterion --referencingreferencing

determining a student's grade bydetermining a student's grade by

comparing his or her achievements withcomparing his or her achievements withclearly stated criteria for learningclearly stated criteria for learningoutcomes and clearly stated standards foroutcomes and clearly stated standards for

particular levels of performance (James,particular levels of performance (James,2002).2002).


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NormNorm --referencingreferencing

determining a student's grade bydetermining a student's grade by

comparing his or her performance with thecomparing his or her performance with thetypical performance of the group (astypical performance of the group (asindicated by any measure of centralindicated by any measure of central

tendency) to which he/she belongstendency) to which he/she belongs


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Derivation and Application ofDerivation and Application ofDerived FormulasDerived Formulas

demonstrating the derivation of thedemonstrating the derivation of theformula for scaled distributionformula for scaled distribution

EXCEL application of the derived formulaEXCEL application of the derived formula


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demonstrating the derivation of thedemonstrating the derivation of theformula for criterion referencingformula for criterion referencing



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demonstrating the derivation of thedemonstrating the derivation of theformula for norm referencingformula for norm referencing


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G1 Camino Software-Mediated Mathematical Modeling