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Barros, C. & Carvalho, A. (2015). Learning Polynomial Operations: A Game Based on Students' Preferences. In D. Rutledge & D. Slykhuis (Eds.), Proceedings of SITE 2015--Society for Information Technology & Teacher Education International Conference (pp. 2633-2638). Las Vegas, NV, United States: Association for the Advancement of Computing in Education (AACE).