<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2448-8089</journal-id>
<journal-title><![CDATA[Educación matemática]]></journal-title>
<abbrev-journal-title><![CDATA[Educ. mat.]]></abbrev-journal-title>
<issn>2448-8089</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Investigación y Divulgación de la Educación Matemática A.C.; Universidad de Guadalajara]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-80892019000200075</article-id>
<article-id pub-id-type="doi">10.24844/em3102.04</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estructuras semánticas de problemas aditivos de enunciado verbal en libros de texto mexicanos]]></article-title>
<article-title xml:lang="en"><![CDATA[Semantic structures of additive problems of verbal statement in Mexican textbooks]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Nieto]]></surname>
<given-names><![CDATA[Camilo Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarro Sandoval]]></surname>
<given-names><![CDATA[Catalina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro Inostroza]]></surname>
<given-names><![CDATA[Angela Nolfa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García González]]></surname>
<given-names><![CDATA[María del Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Guerrero  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Austral de Chile  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Guerrero  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>31</volume>
<numero>2</numero>
<fpage>75</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-80892019000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-80892019000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-80892019000200075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El objetivo de esta investigación es caracterizar los problemas aditivos de enunciado verbal presentes en los libros de texto del segundo periodo escolar de Educación básica en México (primer, segundo y tercer grados) con base en su estructura semántica. Bajo un enfoque cualitativo, se realizó un análisis de contenido documental, en el que se establecieron unidades y categorías de análisis. Los resultados sugieren que los libros de texto analizados presentan en su mayoría, problemas con estructuras sencillas de resolver como las de cambio y combinación, y pocos problemas con estructuras complejas como las de comparación e igualación. Identificando además algunas estructuras semánticas compuestas, éstas últimas representan mayor desafío para la resolución de problemas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The research aim is to characterize the additive problems of verbal statement in the textbooks of the second period of basic education in Mexico (first, second and third grades) according to their semantic structure. From the qualitative approach, an analysis of documentary content was carried out, in which units and categories of analysis were established. The results suggest that the analyzed textbooks mostly present problems with simple structures to solve such as change and combination, and just a few of them with complex structures such as comparison and equalization. Also identifying some composite semantic structures, that represent a challenge in problem solving.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[problemas aditivos]]></kwd>
<kwd lng="es"><![CDATA[estructura semántica]]></kwd>
<kwd lng="es"><![CDATA[libro de texto]]></kwd>
<kwd lng="en"><![CDATA[additive problems]]></kwd>
<kwd lng="en"><![CDATA[semantic structure]]></kwd>
<kwd lng="en"><![CDATA[textbook]]></kwd>
</kwd-group>
</article-meta>
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