Francisco Pereira, F., & 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), 427-446. https://doi.org/10.33871/22385800.2023.12.28.427-446