<?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>1516-7313</journal-id>
<journal-title><![CDATA[Ciência & Educação (Bauru)]]></journal-title>
<abbrev-journal-title><![CDATA[Ciência educ.]]></abbrev-journal-title>
<issn>1516-7313</issn>
<publisher>
<publisher-name><![CDATA[Universidade Estadual Paulista (UNESP)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1516-73132010000300011</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Como novos conhecimentos podem ser construídos a partir dos conhecimentos prévios: um estudo de caso]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[Francimar Martins]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sobral]]></surname>
<given-names><![CDATA[Ana Carolina Moura Bezerra]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="A11">
<institution><![CDATA[,Universidade Federal Rural de Pernambuco  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2010</year>
</pub-date>
<volume>16</volume>
<numero>03</numero>
<fpage>667</fpage>
<lpage>677</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_arttext&amp;pid=S1516-73132010000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_abstract&amp;pid=S1516-73132010000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_pdf&amp;pid=S1516-73132010000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[O presente artigo trata sobre o estudo de caso de como uma professora utiliza os conhecimentos prévios dos estudantes durante a abordagem de um novo conceito científico. Para tanto, foram realizadas filmagens de aulas de ciências durante a execução de uma sequência didática, a fim de investigar de que maneira os conhecimentos prévios dos estudantes eram tratados em sala de aula ao longo da abordagem do tema. A partir dos resultados encontrados, percebemos nas aulas observadas como a professora lidava com os conhecimentos dos estudantes. Identificamos que houve ocasiões em que ela os considerou e outras em que os desconsiderou. Apesar de ações antagônicas, tanto o fato de considerar quanto de desconsiderar parecem ter em comum a busca de manutenção de foco sob os conceitos, entendidos pela professora, como sendo os que devem ser objeto de atenção dos alunos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[This article deals with a case study about how a teacher uses previous knowledge of students to approach a new concept. To this end, sciences classes were filmed during the execution of a didactic sequence, in order to investigate how previous knowledge of the students was treated in the classroom along the approach of the theme. From these results, we saw how the teacher dealt with previous knowledge of their students. We identified that there were occasions when she considered them and others in which she disregarded them. Although they are antagonistic actions, both the facts, to consider or to dismiss, have in common the search for keeping the focus on the concepts, defined by the teacher as those that should be the object of attention for the students.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Conhecimentos Prévios]]></kwd>
<kwd lng="pt"><![CDATA[Ensino de Ciências]]></kwd>
<kwd lng="pt"><![CDATA[Estratégias de Ensino]]></kwd>
<kwd lng="en"><![CDATA[Previous Knowledge]]></kwd>
<kwd lng="en"><![CDATA[Teaching Sciences]]></kwd>
<kwd lng="en"><![CDATA[Strategies to Teaching]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <font face="Arial, Helvetica, sans-serif"> <h2>Como novos conhecimentos podem ser constru&iacute;dos a partir  dos conhecimentos pr&eacute;vios: um estudo de caso.</h2> <h3>How new knowledge can  be constructed from previous knowledge: a case study.</h3>     <p>&nbsp;</p> <h4>Francimar Martins Teixeira, Ana Carolina Moura Bezerra  Sobral    <br> </h4> </font>      ]]></body><back>
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