2178-5201 2178-5201 S2178-52012017000200215 10.4025/actascieduc.v39i2.29046 Brazil Brazil Brazil 00 06 2017 00 06 2017 39 2 215 224

37 1 1 843-60 15 1 1 195-224 32 114 114 21-38 16 3 3 573-601 31 113 113 1247-269