2550-6722 2550-6722 S2550-67222020000300106 10.37135/chk.002.12.07 Ecuador Ecuador Ecuador 00 12 2020 00 12 2020 12 106 117

2001 2016 British Council. International Educational Services 2015 1994 13 209-21 1981 2006 2003 Second Edition 2016 2007 19 1 1 34-5 2019 9 2 2 105-19 2009 2015 Madrid, Spain Ministerio de Educación 2018 1991 2 815-60 2016 1 1 1 5 Save the Children 2015 2015 6 19 19 226-33 2005 2012 2013 2008 2019 73