Santos, Gabrielle Nunes dos, Thaís Philipsen Grützmann, and Maria Arlita da Silveira Soares. 2021. “STUDY ON LINEAR SYSTEMS FROM THE PERSPECTIVE OF SEMIOTIC REPRESENTATION RECORDS”. Revista Paranaense de Educação Matemática 10 (22): 242-66. https://doi.org/10.33871/22385800.2021.10.22.242-266.