<?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>2215-3470</journal-id>
<journal-title><![CDATA[Uniciencia]]></journal-title>
<abbrev-journal-title><![CDATA[Uniciencia]]></abbrev-journal-title>
<issn>2215-3470</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional, Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-34702021000100001</article-id>
<article-id pub-id-type="doi">10.15359/ru.35-1.1</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Errores en la comprensión del significado de las letras en tareas algebraicas en estudiantado universitario]]></article-title>
<article-title xml:lang="en"><![CDATA[Errors in understanding the meaning of letters in algebraic assignments by university students]]></article-title>
<article-title xml:lang="pt"><![CDATA[Erros de estudantes universitários na compreensão do significado das letras em tarefas algébricas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolaños-González]]></surname>
<given-names><![CDATA[Helen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lupiáñez-Gómez]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Granada Departamento de Didáctica de la Matemática ]]></institution>
<addr-line><![CDATA[ Granada]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Granada Departamento de Didáctica de la Matemática ]]></institution>
<addr-line><![CDATA[ Granada]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>18</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-34702021000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-34702021000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-34702021000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo tiene como objetivo general analizar, clasificar e interpretar los errores algebraicos que presenta un grupo de 38 estudiantes matriculados en el curso Matemática General de la Universidad Nacional en Costa Rica, que se oferta a diversas carreras. En este estudio, que constituye una réplica de investigación, empleamos un cuestionario centrado en el uso de las letras con diferentes significados, desde etiquetas a variables. Se desarrolló desde el enfoque cuantitativo durante el periodo 2018-2019. Como resultado del análisis se ha detectado que los errores más frecuentes en las respuestas de los ítems responden al uso de la letra como incógnita de valor específico, letra como número generalizado o en el manejo de la letra como variable.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This investigation has as general objective to analyze, classify and interpret the algebraic errors presented by a group of 38 students enrolled in the General Mathematics course of Universidad Nacional in Costa Rica, which is offered to different majors. In this study, that constitutes a research replica, we use a questionnaire focused on the use of letters with different meanings, from labels to variables. It was developed from the quantitative approach during the 2018-2019 period. As a result of the analysis, it has been detected that the most frequent errors in the answers of the items respond to the use of the letters as unknown specific value, letter as generalized number, or in the use of the letter as variable.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Este trabalho tem como objetivo geral analisar, classificar e interpretar os erros algébricos apresentados por um grupo de 38 estudantes matriculados no curso de Matemática Geral oferecido a várias carreiras da Universidade Nacional da Costa Rica. Neste estudo, que constitui uma réplica da pesquisa, utilizamos um questionário focado no uso de letras com significados diferentes, desde rótulos até variáveis. Foi desenvolvido a partir do enfoque quantitativo durante o período 2018-2019. Como resultado da análise, detectou-se que os erros mais frequentes nas respostas dos itens respondem ao uso da letra como incógnita de um valor específico, letra como um número generalizado ou no manejo da letra como uma variável.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Errores]]></kwd>
<kwd lng="es"><![CDATA[dificultades]]></kwd>
<kwd lng="es"><![CDATA[tareas algebraicas]]></kwd>
<kwd lng="es"><![CDATA[uso de letras]]></kwd>
<kwd lng="es"><![CDATA[estudiantes universitarios]]></kwd>
<kwd lng="es"><![CDATA[álgebra, educación superior]]></kwd>
<kwd lng="es"><![CDATA[educación matemática]]></kwd>
<kwd lng="en"><![CDATA[Errors]]></kwd>
<kwd lng="en"><![CDATA[difficulties]]></kwd>
<kwd lng="en"><![CDATA[algebraic tasks]]></kwd>
<kwd lng="en"><![CDATA[use of letters]]></kwd>
<kwd lng="en"><![CDATA[university students]]></kwd>
<kwd lng="en"><![CDATA[algebra]]></kwd>
<kwd lng="en"><![CDATA[higher education, Mathematics education]]></kwd>
<kwd lng="pt"><![CDATA[Erros]]></kwd>
<kwd lng="pt"><![CDATA[dificuldades]]></kwd>
<kwd lng="pt"><![CDATA[tarefas algébricas]]></kwd>
<kwd lng="pt"><![CDATA[uso de letras]]></kwd>
<kwd lng="pt"><![CDATA[estudantes universitários]]></kwd>
<kwd lng="pt"><![CDATA[álgebra, ensino superior]]></kwd>
<kwd lng="pt"><![CDATA[educação matemática]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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