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<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>S2448-80892021000200288</article-id>
<article-id pub-id-type="doi">10.24844/em3302.14</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[In Memoriam Gérard Vergnaud]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Artigue]]></surname>
<given-names><![CDATA[Michèle]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rogalski]]></surname>
<given-names><![CDATA[Janine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af2">
<institution><![CDATA[,Universidad París-Diderot Laboratorio de Didáctica André Revuz ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>France</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad París-Diderot Laboratorio de Didáctica André Revuz ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>France</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>288</fpage>
<lpage>292</lpage>
<copyright-statement/>
<copyright-year/>
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</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Artigue]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[D&#8217;Ambrosio]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Hanna]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Kilpatrick]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Vergnaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Plenary panel session moderated by Michèle Artigue]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Niss]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Proceedings of ICME-10]]></source>
<year>2008</year>
<page-range>105-22</page-range><publisher-loc><![CDATA[Denmark ]]></publisher-loc>
<publisher-name><![CDATA[IMFUA]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brun]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evolution des rapports entre la psychologie du développement et la didactique des mathématiques]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Artigue]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Gras]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Laborde]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Tavignot]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Actes du Colloque Vingt ans de Didactique des Mathématiques en France]]></source>
<year>1994</year>
<page-range>. 67-83</page-range><publisher-name><![CDATA[La Pensée Sauvage]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vandebrouck]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mathematics classrooms. Students&#8217; activities end teachers&#8217; practices]]></source>
<year>2013</year>
<publisher-name><![CDATA[Sense Publishers]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vergnaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A classification of cognitive tasks and operations of thought involved in addition and subtraction problems]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Carpenter]]></surname>
<given-names><![CDATA[T. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Moser]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Romberg]]></surname>
<given-names><![CDATA[T. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Addition and substraction: a cognitive perspective]]></source>
<year>1982</year>
<page-range>39-59</page-range><publisher-name><![CDATA[Lawrence Erlbaum]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vergnaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multiplicative structures]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Lesh]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Acquisition of mathematics concepts and processes]]></source>
<year>1983</year>
<page-range>127-74</page-range><publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vergnaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La théorie des champs conceptuels]]></article-title>
<source><![CDATA[Recherches en didactique des mathématiques]]></source>
<year>1991</year>
<volume>10</volume>
<numero>2/3</numero>
<issue>2/3</issue>
<page-range>133-70</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vergnaud]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The theory of conceptual fields]]></article-title>
<source><![CDATA[Human Development]]></source>
<year>2009</year>
<volume>52</volume>
<page-range>83-94</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<source><![CDATA[]]></source>
<year></year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
