Evaluation of difficulty and complexity of tasks: casestudy of international on-line competition ‘‘beaver’’

• Autores: Ekaterina Yagunova, Sergei Pozdniakov, Nina Ryzhova, Evgeniia Razumovskaia, Nikolay Korovkin
• Localización: The International journal of engineering education, ISSN-e 0949-149X, Vol. 32, no. 3 (Parte A), 2016, págs. 1141-1150
• Idioma: inglés
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• Resumen

  • Interest in the assessment of the quality of traditional educational techniques has grown, especially in relation to thesubjects like IT or Computer Science because Informatics tests carried out using computers enable us to evaluate thequality of tasks using log-files. The study focuses of the assessment of difficulty and complexity of tasks for schoolchildren.Based on the analysis of results of 6588 participants in the international informatics competition ‘Beaver–2012’, it is shownthat often usual a priori evaluation made by the organizers of the competition does not correspond to the task’s realdifficulty for the participant. A cluster of tasks the difficulty of which was underestimated was distinguished. Thecorrelation between the length of the statement and difficulty for primary school children was shown. In order to make theresults of the test more valid, a way of dividing the tasks according to their difficulty and complexity was found. Based onthe method, recommendations for the organizers of the tests for general public were formulated in order to make themeasures of educational outcomes of computer engineering knowledge more valid and accurate.