2178-5201 2178-5201 S2178-52012017000200163 10.4025/actascieduc.v39i2.32688 Brazil Brazil 00 06 2017 00 06 2017 39 2 163 173

94 236 236 32-52 97 97 5-12 25 2 2 39-55 1 2 2 65-76 26 26 69-83 25 1 1 265-91 22 2 2 151-72 20 2 2 493-512 15 31 31 185-93