1809-4309 1809-4309 S1809-43092016000200464 10.5212/PraxEduc.v.11i2.0009 Brazil 00 08 2016 00 08 2016 11 2 464 481

19 48 48 69-88 7 7 1 1 1 63-7 30 1 1 95-133 26 18 18 89-111 25 17 17 17-35 1 32-6