2178-5201 2178-5201 S2178-52012017000200131 10.4025/actascieduc.v39i2.30440 Brazil Brazil 00 06 2017 00 06 2017 39 2 131 140

36 3 3 853-65 10 1 1 1-22 31 113 113 1355-379 12 2 2 287-31 28 90 90 106-33