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Grawemeyer, Beate and Mavrikis, M. and Holmes, W. and Hansen, A. and Loibl, K. and Gutierrez-Santos, Sergio (2015) Affect matters: exploring the impact of feedback during mathematical tasks in an exploratory environment. In: Conati, C. and Heffernan, N. and Mitrovic, A. and Verdejo, M. (eds.) Artificial Intelligence in Education. Lecture Notes in Computer Science 9112. New York, U.S.: Springer, pp. 595-599. ISBN 9783319197722.