1809-4309 1809-4309 S1809-43092016000100243 10.5212/PraxEduc.v.11i1.0011 Brazil 00 04 2016 00 04 2016 11 1 243 269

24 24 41-67 31 112 112 749-68 4 7 7 231-43 18 2 2 17-26 31 112 112 729-48 6 10 10 173-84 2 261-74