Atividades experimentais e iniciação científica para alunos do ensino médio: estudo da poluição das águas
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Data
2012
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Resumo
The quality of the water is a term that doesn't only concern the determination of the purity of the same,
but the characteristics also wished for your use. The teaching of Environmental Chemistry using the thematic
water quality, linked to the experimental activities it can contribute to global formation of high school students
giving them conditions for construction, reconstruction and production of knowledge. This way this work had as
objective the construction of a mini-course for high school students, in order to these can relate the chemistry
studied with some parameters related to the water quality through experimental activities. In the development of
this mini-course a potability kit was used (Alfakit) for analysis of the following parameters: alkalinity, chloride,
free chlorine, pH, total hardness, turbidity, color, total iron, consumed oxygen, ammonia, total coliforms, faecal
coliforms and salmonella (salmonella typhi). The analyses were accomplished as standard methods for the
water and wastewater. It was also made a plan and class procedure and a questionnaire given to the participant
students. The results obtained starting from the determination of the parameters, already mentioned, they
allowed to collaborate for the students to observe subjects related to the consumption, quality and preservation
of the water. We believed that with the student participation activates in a situation of real investigation, proposal
in the challenge form will be able instigate the students in the search of an answer more consolidated.
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Palavras-chave
Análises ambientais, Interdisciplinaridade, Poluição, Environmental analysis, Interdisciplinarity, Pollution
Citação
SANTANA, Bruna de Paula; BRITO, Núbia Natália. Atividades experimentais e iniciação científica para alunos do ensino médio: estudo da poluição das águas. Periódico Tchê Química, Porto Alegre, v. 9, n. 18, p. 87-97, 2012.