<?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>1983-2117</journal-id>
<journal-title><![CDATA[Ensaio Pesquisa em Educação em Ciências]]></journal-title>
<abbrev-journal-title><![CDATA[Ens. Pesqui. Educ. Ciênc]]></abbrev-journal-title>
<issn>1983-2117</issn>
<publisher>
<publisher-name><![CDATA[Universidade Federal de Minas Gerais]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1983-21172000000100037</article-id>
<article-id pub-id-type="doi">10.1590/1983-21172000020104</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[RACIOCÍNIO HIPOTÉTICO-DEDUTIVO RELATIVO À FLUTUAÇÃO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Krapas]]></surname>
<given-names><![CDATA[Sonia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ure]]></surname>
<given-names><![CDATA[Maria Célia Dibar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[Luiza Rodrigues de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal Fluminense Inst. Física ]]></institution>
<addr-line><![CDATA[Niterói ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de Buenos Aires Fac. Ciências Exatas e Naturais ]]></institution>
<addr-line><![CDATA[Buenos Aires ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade de São Paulo Fac. Educação ]]></institution>
<addr-line><![CDATA[São Paulo ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2000</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2000</year>
</pub-date>
<volume>2</volume>
<numero>1</numero>
<fpage>37</fpage>
<lpage>56</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_arttext&amp;pid=S1983-21172000000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_abstract&amp;pid=S1983-21172000000100037&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://educa.fcc.org.br/scielo.php?script=sci_pdf&amp;pid=S1983-21172000000100037&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[O objetivo do trabalho &#233; estudar as estrat&#233;gias adotadas frente &#224; tarefa de escolha de hip&#243;teses relativa ao fen&#244;meno de flutua&#231;&#227;o. Os datos foram obtidos a partir de entrevistas com crian&#231;as e de question&#225;rios com adultos. Na an&#225;lise dos resultados foram contempladas as rela&#231;&#245;es das estrat&#233;gias com a idade, com a forma e com o conte&#250;do das hip&#243;teses. A precocidade da estrat&#233;gia de falseamento correto foi atribu&#237;da a diferen&#231;as nos procedimentos mentais utilizados por crian&#231;as e adultos. Tratamentos estat&#237;sticos dos dados confirmam alguma rela&#231;&#227;o entre as estrat&#233;gias e a forma e o conte&#250;do das hip&#243;teses. S&#227;o apontadas contribui&#231;&#245;es para o ensino de ci&#234;ncias.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[This paper reports a study on the strategies one adopts when challenged to put forward hypotheses related to the phenomenon of floating. Data presented has been obtained in interviews with children and questionnaires with adults. The strategies adopted by these people were analysed in relation with their age, the form of their hypotheses and the content of these. The correct falseability strategy is precociously adopted apparently due to the differences between the mental procedures of children and adults. Statistical analyses of data point to some relationship between the strategies adopted and characteristics of hypotheses put forward. Contributions to science education are indicated.]]></p></abstract>
</article-meta>
</front><back>
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