<?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>S0120-419X2011000200006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resolución de problemas por medio de matemática experimental: uso de software de geometría dinámica para la construcción de un lugar geométrico desconocido]]></article-title>
<article-title xml:lang="en"><![CDATA[Solving geometric problems through experimental mathematics: use of dynamic geometry software to construct an unknown locus]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ACOSTA]]></surname>
<given-names><![CDATA[MARTÍN E]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MEJÍA]]></surname>
<given-names><![CDATA[CAROLINA]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[RODRPÍGUEZ]]></surname>
<given-names><![CDATA[CARLOS W]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Industrial de Santander Escuela de Matemáticas ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<volume>29</volume>
<numero>2</numero>
<fpage>163</fpage>
<lpage>174</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-419X2011000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-419X2011000200006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-419X2011000200006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. A través de un ejemplo de geometría euclidiana y utilizando el programa de geometría dinámica Cabri Géomètre, mostraremos cómo seguir un proceso para la solución de problemas mediante la matemática experimental que comprende dos momentos: la experimentación y la formalización. El problema que resolvemos es el siguiente: Dado un triángulo cualquiera, encontrar el lugar geométrico de todos los puntos en el plano tales que el triángulo simétrico lateral del triángulo dado sea rectángulo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. Through an example of Euclidean geometry and using the dynamic geometry software Cabri Géomètre, we show here how to follow a process to solve problems via experimental mathematics which include two phases: experimentation and formalization. The problem we solve is as follows: Given a triangle, find the locus for all points in the plane such that the lateral symmetrical triangle to triangle given be rectangle.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[experimentación matemática]]></kwd>
<kwd lng="es"><![CDATA[geometría dinámica]]></kwd>
<kwd lng="es"><![CDATA[lugar geométrico]]></kwd>
<kwd lng="en"><![CDATA[experimental mathematics]]></kwd>
<kwd lng="en"><![CDATA[dynamic geometry]]></kwd>
<kwd lng="en"><![CDATA[locus]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[   <font size="2" face="Verdana">     <p align="center"><font size="4"><b><i>Resoluci&oacute;n de problemas por medio de    <br> matem&aacute;tica experimental: uso de software de    <br> geometr&iacute;a din&aacute;mica para la construcci&oacute;n de    <br> un lugar geom&eacute;trico desconocido</i></b></font></p>      <p align="center">MART&Iacute;N E. ACOSTA <sup>*</sup>, CAROLINA MEJ&Iacute;A,    <br> CARLOS W. RODRP&Iacute;GUEZ    <br> Escuela de Matem&aacute;ticas, Universidad Industrial de Santander, Bucaramanga, Colombia.</p> <hr>     <p align="justify"><b><i>Resumen.</i></b> A trav&eacute;s de un ejemplo de geometr&iacute;a euclidiana y utilizando el programa de geometr&iacute;a din&aacute;mica <i>Cabri G&eacute;om&egrave;tre,</i> mostraremos c&oacute;mo seguir un proceso para la soluci&oacute;n de problemas mediante la matem&aacute;tica experimental que comprende dos momentos: la experimentaci&oacute;n y la formalizaci&oacute;n. El problema que resolvemos es el siguiente: Dado un tri&aacute;ngulo cualquiera, encontrar el lugar geom&eacute;trico de todos los puntos en el plano tales que el tri&aacute;ngulo sim&eacute;trico lateral del tri&aacute;ngulo dado sea rect&aacute;ngulo.    <br> <b><i>Palabras claves:</i></b> experimentaci&oacute;n matem&aacute;tica, geometr&iacute;a din&aacute;mica, lugar geom&eacute;trico.    ]]></body>
<body><![CDATA[<br> <b><i>MSC2000:</i></b> 97G99, 97U70.</p>    <br> <hr>     <p align="center"><font size="3"><b><i>Solving geometric problems through experimental    <br> mathematics: use of dynamic geometry software to    <br> construct an unknown locus</i></b></font></p>      <p align="justify"><b><i>Abstract.</i></b> Through an example of Euclidean geometry and using the dynamic geometry software <i>Cabri G&eacute;om&egrave;tre,</i> we show here how to follow a process to solve problems via experimental mathematics which include two phases: experimentation and formalization. The problem we solve is as follows: Given a triangle, find the locus for all points in the plane such that the lateral symmetrical triangle to triangle given be rectangle.    <br> <b><i>Keywords:</i></b> experimental mathematics, dynamic geometry, locus.</p> <hr>     <p align="justify">Texto Completo disponible en <a href="pdf/rein/v29n2/v29n2a06.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; Acosta M., &quot;Geometr&iacute;a experimental con Cabri: una nueva praxeolog&iacute;a matem&aacute;tica&quot;, <i>Educaci&oacute;n Matem&aacute;tica</i> 17, n&uacute;m. 3 (2005).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000022&pid=S0120-419X201100020000600001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;2&#93; Borwein J. et al. <i>Experimentation in mathematics, computational paths to discovery.</i> A. K. Peters. USA, 2004.    &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=S0120-419X201100020000600002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;3&#93; Baccaglini-Frank A., and Mariotti M.A., &quot;Conjecturing and Proving in Dynamic Geometry: the Elaboration of Some Research Hypotheses&quot;, In <i>Proceedings of the 6th Conference on European Research in Mathematics Education,</i> Lyon, January 2009.    &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=S0120-419X201100020000600003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;4&#93; Hanna G., <i>Proof, explanation and exploration: An overview.</i> Educational Studies in Mathematics, Special issue on &quot;Proof in Dynamic Geometry Environments&quot;, 44 (1-2), 5-23, 2000.    &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=S0120-419X201100020000600004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;5&#93; Kuntz G., <i>D&eacute;marche exp&eacute;rimentale et apprentissages math&eacute;matiques.</i> Dossiers de la VST, en ligne <a href ="http://www.inrp.fr/vst/Dossiers/Demarche_experimentale/sommaire.htm">http://www.inrp.fr/vst/Dossiers/Demarche_experimentale/sommaire.htm</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=000030&pid=S0120-419X201100020000600005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify">&#91;6&#93; Ministerio de Educaci&oacute;n Nacional. <i>Lineamientos Curriculares: Matem&aacute;ticas,</i> Bogot&aacute;, Magisterio, 1998.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000031&pid=S0120-419X201100020000600006&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;7&#93; Moise E., and Downs F. Jr., <i>Geometr&iacute;a Moderna.</i> Fondo Educativo Interamericano, S.A. Massachusetts, 1964.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000033&pid=S0120-419X201100020000600007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;8&#93; Yerushalmy M., Chazan D. & Gordon M., <i>Guided inquiry and technology: A yearlong study of children and teachers using the Geometric Supposer.</i> (Technical Report No. 90-8). Newton, MA: Education Development Center, 1988.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000035&pid=S0120-419X201100020000600008&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: E-mail : <a href="mailto:martin@matematicas.uis.edu.co">cmparra@unal.edu.co</a>.    <br> <b>Recibido:</b> 22 de septiembre de 2011, <b>Aceptado:</b> 25 de noviembre de 2011.</p> </font>      ]]></body><back>
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