2448-8089 2448-8089 S2448-80892022000300301 10.24844/em3403.11 Italy Italy Spain 00 00 2022 00 00 2022 34 3 301 328

2018 13 1 1 41-61 2019 15 2 2 1-15 2013 1 97-124 2000 43 1 1 31-64 2008 59 5 5 389-407 2006 41 3 3 145-57 2013 33 1 1 2-8 2012 Seoul, South Korea 2015 629-32 2018 21 21 417-27 2018 13 13 105-22 2018 20 3 3 236-53 2008 17 2 2 83-99 2013 170-7 2014 45 2 2 246-84 2014 46 2 2 267-78 2013 57 2 2 91-106 2021 23-40 2018 258-62 2020 14 3 3 226-40 2021 29 2013 3055-64 2009 1 209-16 2021 1998 21 1 1 75-89 2001 271-93 2014 431-4 1998 1 1 295-315 2008 39 4 4 372-400 2001 295-320 2006 9 2 2 187-211 2008 4, 1-13 2012 44 5 5 613-25 2008 2013 7 1 1 63-74 2018 98 2 2 197-214 2011 13 2 2 44-66 2006 429-59 2002 553-80 2018 21 5 5 429-50 2019 3 81-8 2020 8 11 11 1872. National Council of Teachers of Mathematics 2000 2021 1-27 2009 275-84 2019 473-82 2021 9 11 11 1241 2002 2004 7 4 4 299-327 2007 257-315 2009 171-218 2017 3220-3 2019 2018 1-10 2009 2020 59 59 100798 2011 1992 127-46 2015 89 1 1 19-39 2009 105-11 2004 7 1 1 5-32 2003 877-917