2178-5201 2178-5201 S2178-52012017000300329 10.4025/actascieduc.v39i3.31353 Brazil 00 09 2017 00 09 2017 39 3 329 339

116 116 117-42 30 107 107 349-72 11 1 1 232-51 14 2 2 65-71