Programa de Pós-Graduação em Rede Nacional para Ensino das Ciências Ambientais - PROFCIAMB/IG

URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/10922

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Acesso aberto (Open Access)
Cianobactérias e poluição da água: uma sequência didática para o ensino de ciências ambientais
(Universidade Federal do Pará, 2018-12-05) ATROCH, Rosa de Fátima Silva; MALCHER, Maria Ataide; http://lattes.cnpq.br/5418062253829906; SCHNEIDER, Maria Paula Cruz; http://lattes.cnpq.br/3901112943859155
This dissertation describes the process of elaboration, implementation and validation of a didactic sequence (SD) to explore the theme "Cyanobacteria and water pollution" with 6th grade students. The purpose of this study is to propose a didactic sequence to facilitate the practical approach of the subject by science teachers to 6th grade students, to test SD with teachers and to evaluate the use of SD in the learning process on the subject. This study was carried out in three state schools that offer the 6th year of elementary education in the urban area of the municipality of Soure, Marajó Island (PA). They are: School in Agreement Regime Stella Maris Institute, State School of Elementary and Middle School Professor Edda de Sousa Gonçalves and Escola Estadual de Ensino Fundamental e Médio Gasparino Batista da Silva. The teaching strategies used to formulate the SD and reach the learning objectives were thought based on the integrated constructivist model of Martine Méheut, which is based on the concepts of Didactic Engineering. The stages of SD elaboration, implementation and validation followed the following methodological organization: 1) The previous analysis: in order to define SD objectives and requirements, on-site observations and questionnaires were applied to teachers. 2) Conception: stage of planning and review of the activities that constitute the didactic sequence. 3) SD experimentation, implementation, validation and analysis: this stage was divided in validation and analysis with teachers, where SD was presented to the teachers in the form of a workshop and evaluated from an array of requirements by the five Science teachers of the three state schools present in the municipality of Soure - Marajó - Pará. And experimentation, implementation and validation with students with application of a pre-test and a post-test to 43 students distributed in two classes of the 6th year of the Stella Maris school. The data were analyzed by the qualitative method, and it was possible to conclude that the didactic sequence was validated as a resource applicable to the science classes in the context of the three state schools located in Soure. For the present study, which represents the first use of the didactic sequence produced, the results were satisfactory. However, they are not definitive, since SD should be tested, reviewed, used and validated in future contexts.
Acesso aberto (Open Access)
Monitoramento por sensoriamento remoto da concentração de clorofila-a e das florações de cianobactérias no Baixo Tapajós : audiovisual praias do Tapajós para gerações presentes e futuras
(Universidade Federal do Pará, 2020-02-10) ARAÚJO, James Leão de; MALCHER, Maria Ataíde; http://lattes.cnpq.br/5418062253829906; SCHNEIDER, Maria Paula Cruz; http://lattes.cnpq.br/3901112943859155
The Tapajós River is the fifth largest river in the Amazon Basin. From Aveiro to Santarém, it resembles a lake and favors the eutrophication process. It is under pressure such as: deforestation, gold mining, use as a waterway and tourism. The beaches between Santarém and Belterra, gained evidence when in 2009 the newspaper The Guardian, chose Alter do Chão as the best beach in Brazil. The growth of tourist activities and infrastructure was notable. In 2015 after bathing water quality analyzes, Alter do Chão was banned. The increase in planktonic blooms has been observed by popular researchers since the 1990s. Extending the studies, 2450 km2 of remote sensing was monitored from Aveiro to Santarém, obtaining the blooming areas of cyanobacteria, concentrations of chlorophyll-a, nutrient pollution and risk levels for contact activities. The occurrence of cyanobacteria is linked to variations in rainfall and river level. The greatest health risks occur at the maximum points of drought in November and flooding in May. The areas with the highest occurrence of blooms and the highest concentrations of chlorophyll-a are upstream from the beaches of intense use. The increase in human activities and the occupation of the soil, may be responsible for the increase in flowering. This information must be disseminated through a didactic-informative product for Basic Education. An audiovisual was produced for application in Basic Education called “Praias do Tapajós For Present and Future Generations”, as the time of 23’16” divided into 07 blocks related to the researched content. The audiovisual was applied in six classes of two schools of basic education, in the High School, being one in Belém the Federal Institute of Pará and another in Santarém the São Raimundo Nonato State School, totaling eleven hours of application. The audiovisual product was validated through a 'likert' questionnaire, observing conceptual points related to the acquired knowledge, relationship with studied contents, involvement in environmental issues and quality of the material presented. The average rejection rates were always below 25% while approval was always above 75%.

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