PAULS, M. P.; Loos-Sant'Ana, H.; Sant'Ana-Loos, R. S. Interdisciplinarity under Consideration of the Theoretical System of Expanded Affectivity: An Essay about Overcoming Difficulties in Learning of Mathematics through Language and Semiotics. Int J Innov Educ Res 2018, 6 (7), 33-52. https://doi.org/10.31686/ijier.vol6.iss7.1091.