1984-7114 1984-7114 S1984-71142016000300534 10.14210/contrapontos.v16n3.p534-540 USA 00 09 2016 00 09 2016 16 3 534 540

Salvador, Bahia, Brazil 2 1 1 National Council of Teachers of Mathematics National Council of Teachers of Mathematics National Council of Teachers of Mathematics National Council of Teachers of Mathematics National Council of Teachers of Mathematics National Council of Teachers of Mathematics 30 1 1 29-32 33 3 3 180-83 1 1 1 1-8 66 3 3 271-89