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Desenvolvimento da literacia química de alunos do ensino básico

Educación Química 2024 2 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
José Luís Araújo

Summary

A Portuguese citizen-science project engaged over 500 middle-school students in testing coastal water quality and learning about microplastic pollution through hands-on chemistry investigations. The program significantly improved students' attitudes toward chemistry and their conceptual understanding of water parameters and polymers compared to a control group, demonstrating that microplastic science can be an effective hook for building broader scientific literacy in young people.

Polymers

Os projetos de ciência cidadã têm relevado potencial para promover a literacia científica dos alunos nas suas dimensões afetiva e cognitiva. Contudo, em química, estes projetos são ainda escassos. Assim, partindo do contexto da qualidade das águas costeiras e da sua poluição por (micro)plásticos, foi desenvolvido o projeto de ciência cidadã PVC – Perceiving the Value of Chemistry behind water and microplastics, onde a química assume um papel central. No sentido de conhecer os contributos do projeto desenvolvido, foram investigadas as atitudes face à disciplina de Química de 574 alunos (442 do grupo experimental e 132 do grupo de controlo) do 3º Ciclo do Ensino Básico e a sua aprendizagem da química, ao nível conceptual e processual. Para tal, aplicou-se um questionário de atitudes como pré e pós-teste, um teste de conhecimentos e foram ainda recolhidas notas de campo. No pré-teste registaram-se atitudes positivas no grupo experimental e no grupo de controlo. No pós-teste, o grupo experimental apresentou mudanças de atitudes significativamente mais positivas do que o grupo de controlo, em todas as dimensões presentes no questionário. A análise dos resultados dos testes de conhecimento sugere ainda que o projeto PVC promoveu a aprendizagem conceptual da química relacionada com a análise dos parâmetros físico-químicos das águas e com os polímeros. A nível processual, verificou-se a aprendizagem de técnicas laboratoriais e o desenvolvimento de competências como a autonomia, a colaboração, e o pensamento crítico, bem como a capacidade de comunicação de ideias e de resultados.

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