Lima, K. P. de, Poersch, K. G. and Emmel, R. (2020) “Teaching and learning difficulties in Mathematics in the eighth year of Elementary Education”, REMAT: Revista Eletrônica da Matemática. Bento Gonçalves, RS, 6(1), pp. 1–15. doi: 10.35819/remat2020v6i1id3420.