1809-4309 1809-4309 S1809-43092015000200559 10.5212/PraxEduc.v.10i2.0014 Brazil Brazil 00 12 2015 00 12 2015 10 2 559 583

22 41 41 1-13 22 64 64 3-24 16 16 39-66 27 94 94 47-69 30 106 106 303-18 19 2 2 385-405 35 127 127 397-415 38 3 3 953-75