0121-3814 0121-3814 S0121-38142019000100159 Colombia 00 06 2019 00 06 2019 45 159 174

2000 31 5 5 557-78 1998 113-31 2012 1986 7 2 2 33-115 2014 39 141-61 2014 2013 2001 69 9 9 970-7 2015 27 3 3 7-43 2013 61 4 4 563-80 1998 257-72 2010 2000 2000 25 25 21-40 2005 109-28 2009 18 18 15-28 2017 1990 19-29 1991 2007 1994 14 3 3 325-55 2007 39 1-2 1-2 127-35 2007 16 6 6 507-14 2009 41 3 3 13-8 2000 31 1 1 30-43 1986 1997 National Council of Teachers of Mathematics 2000 1999 2009 26 26 62-82 2004 2012 2012 9 1 1 1-2 2014 24 5 5 361-74 1981 2 2 2 16-21 1985 110 49-53 1985 112 48-52 1990 12 3 3 49-63 1990 9 3 3 124-31 2009 41 4 4 481-92 2014 86 1 1 97-124 2012 12 1 1 82-3