<?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>0120-419X</journal-id>
<journal-title><![CDATA[Revista Integración]]></journal-title>
<abbrev-journal-title><![CDATA[Integración - UIS]]></abbrev-journal-title>
<issn>0120-419X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Industrial de Santander]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-419X2011000100006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actividad demostrativa: participar en la producción de un teorema]]></article-title>
<article-title xml:lang="en"><![CDATA[Proving activity: participating in the production of a theorem]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MOLINA]]></surname>
<given-names><![CDATA[ÓSCAR]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[SAMPER]]></surname>
<given-names><![CDATA[CARMEN]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[PERRY]]></surname>
<given-names><![CDATA[PATRICIA]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[CAMARGO]]></surname>
<given-names><![CDATA[LEONOR]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Pedagógica Nacional Dpto. de Matemáticas ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2011</year>
</pub-date>
<volume>29</volume>
<numero>1</numero>
<fpage>73</fpage>
<lpage>96</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-419X2011000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-419X2011000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-419X2011000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. Analizamos la actividad demostrativa de tres estudiantes de un curso universitario de geometría, cuando trabajan colaborativamente en la resolución de un problema. Subyacente a la resolución está la producción de un teorema dentro de una teoría determinada. El análisis se concentra en identificar y seguirles el rastro a las ideas matemáticas surgidas, y en identificar, en las acciones de los estudiantes, los tres aspectos que según Habermas caracterizan un comportamiento racional (teleológico, epistémico y comunicativo), con miras a describir la participación de los estudiantes. Los hallazgos nos permiten afirmar que es posible que estudiantes de pregrado produzcan un teorema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. We analyze the proving activity of three students of a university geometry course, when they were working collaboratively to solve a problem. Underlying the solution process is the production of a theorem within a determined theory. With the purpose of describing the students&rsquo; participation, the analysis concentrates in identifying and keeping track of the mathematical ideas that emerge and in identifying, in the students&rsquo; actions, the three aspects that, according to Habermas, characterize a rational behavior (teleological, epistemic and communicative). The findings permit us to affirm that undergraduate students can produce a theorem.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Producir un teorema]]></kwd>
<kwd lng="es"><![CDATA[participación]]></kwd>
<kwd lng="es"><![CDATA[comportamiento racional]]></kwd>
<kwd lng="es"><![CDATA[actividad demostrativa]]></kwd>
<kwd lng="es"><![CDATA[geometría euclidiana]]></kwd>
<kwd lng="es"><![CDATA[educación universitaria]]></kwd>
<kwd lng="en"><![CDATA[Produce a theorem]]></kwd>
<kwd lng="en"><![CDATA[participation]]></kwd>
<kwd lng="en"><![CDATA[rational behavior]]></kwd>
<kwd lng="en"><![CDATA[proving activity]]></kwd>
<kwd lng="en"><![CDATA[Euclidean geometry]]></kwd>
<kwd lng="en"><![CDATA[university education]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[   <font size="2" face="Verdana">     <p align="center"><font size="4"><b><i>Actividad demostrativa: participar en la    <br> producci&oacute;n de un teorema</i></b></font></p>      <p align="center">&Oacute;SCAR MOLINA <sup>a,*</sup>, &nbsp; CARMEN SAMPER <sup>a</sup>,    <br> PATRICIA PERRY <sup>a</sup>, &nbsp; LEONOR CAMARGO<sup>a</sup>    <br> <sup>a</sup> Universidad Pedag&oacute;gica Nacional, Dpto. de Matem&aacute;ticas, Bogot&aacute;, Colombia</p> <hr>     <p align="justify"><b><i>Resumen.</i></b> Analizamos la actividad demostrativa de tres estudiantes de un curso universitario de geometr&iacute;a, cuando trabajan colaborativamente en la resoluci&oacute;n de un problema. Subyacente a la resoluci&oacute;n est&aacute; la producci&oacute;n de un teorema dentro de una teor&iacute;a determinada. El an&aacute;lisis se concentra en identificar y seguirles el rastro a las ideas matem&aacute;ticas surgidas, y en identificar, en las acciones de los estudiantes, los tres aspectos que seg&uacute;n Habermas caracterizan un comportamiento racional (teleol&oacute;gico, epist&eacute;mico y comunicativo), con miras a describir la participaci&oacute;n de los estudiantes. Los hallazgos nos permiten afirmar que es posible que estudiantes de pregrado produzcan un teorema.    <br> <b><i>Palabras claves:</i></b> Producir un teorema, participaci&oacute;n, comportamiento racional, actividad demostrativa, geometr&iacute;a euclidiana, educaci&oacute;n universitaria.    <br> <b><i>MSC2000:</i></b> 97E50, 97A99, 97E50, 97E50, 97G99, 97A99.</p>    <br> <hr>     ]]></body>
<body><![CDATA[<p align="center"><font size="3"><b><i>Proving activity: participating in the production    <br> of a theorem</i></b></font></p>      <p align="justify"><b><i>Abstract.</i></b> We analyze the proving activity of three students of a university geometry course, when they were working collaboratively to solve a problem. Underlying the solution process is the production of a theorem within a determined theory. With the purpose of describing the students&rsquo; participation, the analysis concentrates in identifying and keeping track of the mathematical ideas that emerge and in identifying, in the students&rsquo; actions, the three aspects that, according to Habermas, characterize a rational behavior (teleological, epistemic and communicative). The findings permit us to affirm that undergraduate students can produce a theorem.    <br> <b><i>Keywords:</i></b> Produce a theorem, participation, rational behavior, proving activity, Euclidean geometry, university education.</p> <hr>     <p align="justify">Texto Completo disponible en <a href ="pdf\rein\v29n1\v29n1a06.pdf">PDF</a></p> <hr>     <p align="left"><font size="3"><b><i>Referencias</i></b></font></p>      <!-- ref --><p align="justify">&#91;1&#93; Mariotti M.A., &quot;Proof and proving in mathematics education&quot;, in <i>Handbook of research on the psychology of mathematics education: Past, present and future</i> (Eds. Guti&eacute;rrez A. y Boero P.), The Netherlands: Sense Publishers (2006).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000019&pid=S0120-419X201100010000600001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;2&#93; Mariotti M.A., Bartolini Bussi M.G., Boero P., Ferri F. and Garuti M.R., &quot;Approaching geometry theorems in contexts: From history and epistemology to cognition&quot;, in <i>Proceedings of the 21st Conference of the International Group for the Psychology of Mathematics Education</i> (Ed. Pehkonen, E.), Lahti, Finlandia: University of Helsinki (1997).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000021&pid=S0120-419X201100010000600002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      ]]></body>
<body><![CDATA[<!-- ref --><p align="justify">&#91;3&#93; Molina &Oacute;., Samper C., Perry P., Camargo L. y Echeverry A., &quot;Estudio del cuadril&aacute;tero de Saccheri como pretexto para la construcci&oacute;n de un sistema axiom&aacute;tico local&quot;, <i>UNION Rev. iberoamericana de educaci&oacute;n matem&aacute;tica,</i> 24 (2010), 117-134. Disponible en:  <a href ="http://www.fisem.org/web/union/revistas/24/ Union_024_012.pdf">http://www.fisem.org/web/union/revistas/24/ Union_024_012.pdf</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000023&pid=S0120-419X201100010000600003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify">&#91;4&#93; Moore R.C., &quot;Making the transition to formal proof&quot;, <i>Educational Studies in Mathematics</i> 27 (1994), 249-266.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000024&pid=S0120-419X201100010000600004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;5&#93; Morselli F. and Boero P., &quot;Proving as a rational behaviour: Habermas' construct of rationality as a comprehensive frame for research on the teaching and learning of proof&quot;, <i>in Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education</i> (Eds. Durand-Guerrier, V., Soury-Lavergne, S. y Arzarello, F.), Lyon, France: Institut National de Recherche P&eacute;dagogique (2009). Disponible en: <a href ="http://www.inrp.fr/editions/editions-electroniques/cerme6/working-group-2">http://www.inrp.fr/editions/editions-electroniques/cerme6/working-group-2</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000026&pid=S0120-419X201100010000600005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify">&#91;6&#93; Perry P., Samper C. y Camargo L., &quot;Dos episodios que plasman rasgos de una comunidad de pr&aacute;ctica en la que Cabri juega un papel clave&quot;, <i>Memorias del III Congreso Iberoamericano de Cabri, IberoCabri,</i> (2006). Disponible en: <a href ="http://funes.uniandes.edu.co/929/">http://funes.uniandes.edu.co/929/</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000027&pid=S0120-419X201100010000600006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify">&#91;7&#93; Selden J. and Selden A., &quot;Understanding the proof construction process&quot;, <i>Proceedings of ICMI Study 19, Proof and Proving in mathematics education</i> 2 (2009), 196-201.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000028&pid=S0120-419X201100010000600007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;8&#93; Sfard A., <i>Aprendizaje de las matem&aacute;ticas escolares desde un enfoque comunicacional.</i> (Patricia Perry y Luisa Andrade, editoras de la traducci&oacute;n al castellano). Santiago de Cali, Colombia: Programa Editorial Universidad del Valle (2008).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000030&pid=S0120-419X201100010000600008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p> <hr>     <p align="justify"><sup>*</sup>Autor para correspondencia: <i>E-mail:</i> <a href="mailto:ojmolina@pedagogica.edu.co">ojmolina@pedagogica.edu.co</a>.    ]]></body>
<body><![CDATA[<br> <b>Recibido:</b> 15 de abril de 2011, <b>Aceptado:</b> 10 de junio de 2011.</p> </font>      ]]></body><back>
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