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Laureano-Cruces, A.L., Yañez-Castillo, A., Sanchez-Guerrero, L., Ramírez-Rodríguez, J. & Mora-Torres, M. (2018). Examples for a virtual micro world: visualization of abstract concepts. In Proceedings of E-Learn: World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (pp. 1432-1437). Las Vegas, NV, United States: Association for the Advancement of Computing in Education (AACE).