<?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>S2448-80892018000200171</article-id>
<article-id pub-id-type="doi">10.24844/em3002.07</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de tareas de un libro de texto de primaria desde la perspectiva de los niveles de algebrización]]></article-title>
<article-title xml:lang="en"><![CDATA[Task Analysis of an Elementary School Textbook from the Algebraization Levels Perspective]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aké Tec]]></surname>
<given-names><![CDATA[Lilia Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Godino]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Colima Facultad de Ciencias de la Educación ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Granada Facultad de Ciencias de la Educación ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>30</volume>
<numero>2</numero>
<fpage>171</fpage>
<lpage>201</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-80892018000200171&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-80892018000200171&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-80892018000200171&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La introducción del pensamiento algebraico en la educación primaria es una tendencia actual en términos internacionales. Este hecho hace necesario investigar sobre la naturaleza de las tareas planteadas en los libros de texto oficiales de primaria, dado que son un referente para el desarrollo de las clases en dicho nivel educativo. Es en este sentido que el presente trabajo muestra si las tareas del libro de texto de primero de primaria están orientadas a promover el desarrollo del pensamiento algebraico en niños de 6 a 7 años. El estudio se lleva a cabo utilizando el Modelo de Niveles de Algebrización como herramienta de análisis para determinar el carácter algebraico de las tareas, a partir de la práctica matemática que conlleva su resolución. Se reporta que las tareas presentadas en el libro de texto no están intencionalmente dirigidas al desarrollo del pensamiento algebraico en los niños de primero de primaria, pero se evidencia que es posible orientarlas hacia grados progresivos de algebrización.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The introduction of algebraic thinking on the elementary school is an actual trend in international terms. This approach arise the need to research the tasks&#8217; nature in the official elementary textbooks, because they are fundamental in the course of the lessons at this educational level. This study shows if the official book tasks of the first degree on elementary school are orientated to promote the development of algebraic thinking in children from 6 to 7 years old. The analysis is carried out using the Model of Algebraization Levels as a tool to determine the algebraic character of mathematical tasks, based on the mathematical practice involved in their resolution. The results indicate that the tasks on the elementary official book are not orientated to develop mathematical thinking in children of first degree of elementary school, but it may be orientated towards progressive algebraization degrees.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[libros de texto]]></kwd>
<kwd lng="es"><![CDATA[educación primaria]]></kwd>
<kwd lng="es"><![CDATA[razonamiento algebraico]]></kwd>
<kwd lng="es"><![CDATA[niveles de algebrización]]></kwd>
<kwd lng="en"><![CDATA[Textbook]]></kwd>
<kwd lng="en"><![CDATA[elementary school]]></kwd>
<kwd lng="en"><![CDATA[algebraic reasoning]]></kwd>
<kwd lng="en"><![CDATA[algebraization levels]]></kwd>
</kwd-group>
</article-meta>
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