How Challenging are Bebras Tasks? An IRT analysis based on the performance of Italian students

How Challenging are Bebras Tasks? An IRT analysis based on the performance of Italian students. Bellettini, C., Lonati, V., Malchiodi, D., Monga, M., Morpurgo, A., & Torelli, M. In ITiCSE '15 Proceedings of the 2015 ACM Conference on Innovation and Technology in Computer Science Education, pages 27-32, New York, 2015. ACM.
bibtex

@inproceedings{ITICSE2015,
    author="Bellettini, Carlo and Lonati, Violetta and Malchiodi, Dario and Monga, Mattia and Morpurgo, Anna and Torelli, Mauro",
    title="How Challenging are Bebras Tasks? An IRT analysis based on the performance of Italian students",
    
    booktitle="ITiCSE '15 Proceedings of the 2015 ACM Conference on Innovation and Technology in Computer Science Education",
    address="New York",
    publisher="ACM",pages="27-32",
    year=2015}

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