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Direct linkLoureiro, Jerônimo de Oliveira; Dal-Farra, Rossano André – Environmental Education Research, 2018
The increasing urbanization and alienation from nature reduce children's opportunities to interact with plants and challenge teachers to devise educational practices that contribute to learning botany. This study presents the results of activities developed in a Brazilian school through explorations, drawings, dried and pressed specimens, and…
Descriptors: Foreign Countries, Botany, Environmental Education, Elementary School Students
Teixeira, Zaine; Duran, Nelson; Guterres, Silvia S. – Journal of Chemical Education, 2008
In this experiment, the extract from annatto seeds was encapsulated in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) particles by the emulsion-solvent evaporation method. The particles were washed and centrifuged to remove excess stabilizer and then freeze-dried. The main compound of annatto seeds, bixin, has antioxidant properties as well…
Descriptors: Research Methodology, Chemistry, Scientific Concepts, Hands on Science
