<?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>0187-893X</journal-id>
<journal-title><![CDATA[Educación química]]></journal-title>
<abbrev-journal-title><![CDATA[Educ. quím]]></abbrev-journal-title>
<issn>0187-893X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Química]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-893X2016000300195</article-id>
<article-id pub-id-type="doi">10.1016/j.eq.2016.04.003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Enseñanza de la estequiometría: uso de analogías y comprensión conceptual]]></article-title>
<article-title xml:lang="en"><![CDATA[Teaching of stoichiometry: Analogies and conceptual understanding]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Raviolo]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lerzo]]></surname>
<given-names><![CDATA[Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional de Río Negro  ]]></institution>
<addr-line><![CDATA[Bariloche ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2016</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<fpage>195</fpage>
<lpage>204</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-893X2016000300195&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-893X2016000300195&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-893X2016000300195&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Este trabajo relaciona la enseñanza de la estequiometría con analogías y la resolución conceptual de problemas de química. Se elabora una secuencia didáctica sobre el tema, de dificultad progresiva. Esta secuencia, basada en analogías, se aplica con alumnos de primer año de universidad. La experiencia se evalúa con un cuestionario escrito, en el que figuran, entre otros, los 2 ítems de estequiometría conceptual de Nurrenbern y Pickering (1987). Los resultados muestran una comprensión parcial de la temática dado que no se logran superar algunas dificultades expresadas por la bibliografía. Se discute en qué medida y en qué condiciones son útiles las analogías para aprender este tema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[This work makes a connection between the teaching of stoichiometry, analogies and the conceptual resolution of chemistry problems. A didactic sequence on the topic is drawn up, progressive in difficulty. This sequence, based on analogies, is applied by first year university students. The experience is evaluated by means of a written questionnaire, where, amongst others, Nurrenbern and Pickering's (1987) 2 conceptual stoichiometry items figure (Nurrenbern y Pickering, 1987). The results show only partial understanding of the subject since some difficulties expressed in the bibliography were not overcome. To what extent and under which conditions analogies are helpful in the learning of this subject are discussed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estequiometría]]></kwd>
<kwd lng="es"><![CDATA[Analogías]]></kwd>
<kwd lng="es"><![CDATA[Comprensión conceptual]]></kwd>
<kwd lng="en"><![CDATA[Stoichiometry]]></kwd>
<kwd lng="en"><![CDATA[Analogies]]></kwd>
<kwd lng="en"><![CDATA[Conceptual understanding]]></kwd>
</kwd-group>
</article-meta>
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