1809-4309 1809-4309 S1809-43092016000100271 10.5212/PraxEduc.v.11i1.0012 Brazil 00 04 2016 00 04 2016 11 1 271 296

14 55 55 59-72 20 27 27 355-87 57 1 1 1-22, 1987 15 2 2 4-14 25 25 5-17 especial 6-11