Produção de modelos para a investigação de representações sub-microscópicas de estudantes de ensino médio sobre mudanças de estado físico da matéria

Detalles Bibliográficos
Publicado en:	Jornadas de Enseñanza e Investigación Educativa en el campo de las Ciencias Exactas y Naturales (4 : 2015 : Ensenada) - [Actas] - . Ensenada : Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Departamento de Ciencias Exactas y Naturales, 2015
Autor Principal:	Sana, Tania Cristina Vargas
Otros autores o Colaboradores:	Arroio, Agnaldo, Rezende, Daisy De Brito
Formato:	Documento de evento
Temas:	Imagem^lpt Representaçao Sub-microscópico
Acceso en línea:	https://www.memoria.fahce.unlp.edu.ar/trab_eventos/ev.8145/ev.8145.pdf http://jornadasceyn.fahce.unlp.edu.ar/convocatoria/actas-2015/
Resumen:	Este trabalho analisou a percepçao de estudantes do 2 o e 3 o anos do Ensino Médio quanto à representaçao sub-microscópica de processos de mudança de estado físico de diferentes materiais. A sequência didática desenvolvida iniciou-se pela leitura de um texto, seguindo de uma aula experimental sobre pontos de fusao e ebuliçao de substâncias puras e misturas. Após discussoes coletivas sobre os resultados coletados, foi proposto que os estudantes elaborassem imagens sub-microscópicas sobre mudança de estado físico. A princípio houve dificuldade dos estudantes exporem seus modelos e as representaçoes no sub-micro nessa fase, além de simples, apresentavam erros conceituais, tais como: a posiçao espacial das partículas ou a indistinçao entre substância e mistura, na representaçao. Na segunda fase da pesquisa, após discussoes sobre as imagens produzidas, foi elaborada uma animaçao por grupo, tendo sido identificada uma evoluçao considerável dos modelos expressos por apresentarem características mais consistentes cientificamente, como também o discurso dos estudantes tornou se mais coerente e seguro. Recomendamos que sejam criadas oportunidades para que os estudantes construam modelos sobre fenômenos, pois favorece a percepçao de suas dificuldades conceituais e contribui para que desenvolvam concepçoes escolares mais próximas daquelas aceitas pela comunidade científica^lpt

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Produção de modelos para a investigação de representações sub-microscópicas de estudantes de ensino médio sobre mudanças de estado físico da matéria

https://www.memoria.fahce.unlp.edu.ar/trab_eventos/ev.8145/ev.8145.pdf

http://jornadasceyn.fahce.unlp.edu.ar/convocatoria/actas-2015/

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