1981-8106 1981-8106 S1981-81062014000300195 10.2014/eduteo.v24n47.012 Brazil 00 12 2014 00 12 2014 24 47 195 216

6 12 12 31-51 39 1 1 39-57 12 1 1 131-42 13 1 1 115-42 46 46 209-27 31 85 85 359-82 15 1 1 5-20 10 119 119 115-21 35 2 2 179-89