2178-5201 2178-5201 S2178-52012018000400002 10.4025/actascieduc.v40i4.32371 Brazil Brazil 00 10 2018 00 10 2018 40 4 e32371

27-57 175-208 33 31-59 35-52 35-52 75-92 141-77 8 7-22 53-82 4a 14 33 33 138-56 4a