Francisco Pereira, F. and Proença, M.C. de (2023) “TEACHING-LEARNING OF 2ND DEGREE EQUATIONS VIA PROBLEM SOLVING: AN EXPERIENCE BASED ON A HYPOTHETICAL LEARNING TRAJECTORY ”, Revista Paranaense de Educação Matemática, 12(28), pp. 427–446. doi:10.33871/22385800.2023.12.28.427-446.