2178-5201 2178-5201 S2178-52012017000100055 10.4025/actascieduc.v39i1.28468 Brazil 00 03 2017 00 03 2017 39 1 55 65

XXI 72 72 11-31 4a ed. 30 3 3 549-66 18 42 42 37-59 31-46 3 5 5 71-84 25-5 67-80 109-62 19 56 56 201-58 30 2 2 1-13