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Informatikdidaktik Pruefen : kriteriumsorientiert – vollständige Frage. Paul Miotti Riedstr . 3 6010 Kriens pmiotti@hispeed.ch. Prejudices. Teacher is looking at exams of colleagues … What would my grades be ? … and concludes … My colleague is too nice , too demanding etc .
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InformatikdidaktikPruefen: kriteriumsorientiert – vollständige Frage Paul Miotti Riedstr. 3 6010 Kriens pmiotti@hispeed.ch
Prejudices • Teacherislookingatexamsofcolleagues… • Whatwouldmy grades be? • … andconcludes… • Mycolleagueistoonice, toodemanding etc. • Comparisonsareimportant… • Look atthewholepackage • Classes / lectures • exam • grades • Rules Luzern: averages outside 4.1 - 4.8 must bejustified. Consequences? FDI - Assessment
Usualschedule • Teaching (along plan ofsubjects) • Teacherchoseshisexamquestions • Notaxation • Correctionsusingsolutionsofstudents • Gradingbased on a norm • Diagnostics not considered • (Teachertries not toscandalizethecolleagues…) FDI - Assessment
Ideal schedule • goals • taxation • Examquestionsthatrepresentthegoals • Model solutions(good / wrongexamples) • Model grading • AFTERWARDSplanning/ implementationofclasses • exam • Assessementsbased on criteria FDI - Assessment
Elemente • Goals / learningtasks • Bloom‘staxonomy • Assessmentsbased on criteriavs. on norms • Completeexamquestions • (DiagnosticsaccordingtoWeinert) FDI - Assessment
Learning biography • Coming totermswithone‘sownpastisimportant • Whatmemories do youhaveofyourexams / marks? • Marks = „wages“ ofstudents… FDI - Assessment
retrospection Gymnasium 1972 • A modern teacherexplainshiswayofgrading / marks • Correction per class (setofstudentsbeingtaughtas a group) • points-> tallysheet • Whereismark 4? • Gauss isstipulated • Averageshallbe 4.5 • Standard deviation was not mentioned (?) • Measureusually linear, maybe a bit flatter atlow end • „Marks areunimportantaslongassufficient.“ • Myimpressionthen: positive, transparent • Now: partiallyunfair, verycompetitiveclass • = based on NORM • Whatcanbedone in a betterway? FDI - Assessment
Taxonomie Bloom FDI - Assessment
Taxonomie Bloom (Lernziele / P-Aufgaben)Quelle: U.a. Metzger SG FDI - Assessment
Thereis an alternative • assessperformance … • accordingtocriteria a priori OR • accordingtotheresults a posteriori? • Why? Law of (big) numbers – small sample FDI - Assessment
Based on normsvs. criteria FDI - Assessment
Basis on normsvs. criteria FDI - Assessment
effects norm orientation • strong – weakclasses/years • strong– weakindividuals • motivationofstudents • satisfactionofstudents • chances in life/ selektion? • Friend at ETH / Absolvent Eliteschule Paris: „I don‘texpectjustice…“ FDI - Assessment
Completeexamquestion (written) • introduction • enunciatethequestionprecisely • formal structureofanswer • measure / scale • Write down typicalgood / badanswers • Taxation FDI - Assessment
Hintsfor oral exams Writtenexamsaremoreobjectivethan oral exams • Prepare oral questionsbywritingthem down. • Letthetesteedrawtheexamquestions. • Letthetesteechoosethe order ofthequestions. • Maybeadjusterrorofassessment (f.e. goodtestee after bad etc.). • Examinator / co-examinatorwrite down themarksindependently. • Don‘tlookatearlier grades. FDI - Assessment
Diagnostics(source: Franz Weinert) • Continuousevaluationof … • Progress / problemsof individual students • Level ofdifficultyoflearningtasks • --> controlofdidacticalactionbased on diagnosticknowledge • Ex: Asktheteacherabouttheresultsofhisexamtasks (beforetheexam): What will betheoutcomeof individual students? • Heterogenousresults… FDI - Assessment
Questions FDI - Assessment