This article describes the development of a mobile colorimetric analysis tool. The application, called PhotoMetrix, employs the techniques of simple linear correlation for univariate analysis and principal components analysis (PCA) for multivariate exploratory analysis. The image data are captured by the main camera of the device and converted into red, green and blue (RGB) histograms. As regards the application, the iron determinations were performed in vitamin supplements (univariate module) and differentiation of banknotes was performed by PCA (multivariate module). For the iron determinations, three samples of vitamins at concentrations of 14, 40 and 50 mg of iron per tablet were tested and the results were not statistically significant (p > 0.05) compared to the reference method. The differentiation of banknotes was performed on Brazilian and Argentinean banknotes. The results showed clustering of the same types of banknotes, and through the loadings graph it was possible to observe the variables through the formation of clusters.
Resumo: Este artigo é um recorte da pesquisa de Mestrado que objetivou implementar projetos de robótica com alunos dos Anos Finais do Ensino Fundamental com a aplicação de atividades que abrangem a lógica de programação e a robótica envolvendo conceitos das áreas de Física e Matemática. Os conceitos trabalhados abordaram, por meio da resolução de problemas, a construção de protótipos escolhidos pelos alunos com a plataforma de prototipagem eletrônica Arduino. Os resultados obtidos apontam indicativos de que conceitos científicos emergem no trabalho com a robótica e que muitas são as possibilidades de ações com a abordagem proposta, como o desenvolvimento do trabalho em grupo, o estímulo do raciocínio lógico.Palavras-chave: Robótica. Lógica de Programação. Projeto de Trabalho. IMPLEMENTATION OF A ROBOTIC PROJECT IN LAST YEARS OF ELEMENTARY SCHOOLAbstract: This article is part of a MSc dissertation that developed robotics projects with students in the final years of elementary school with the purpose of applying activities that include programming logic and robotics with the support of knowledge in the fields of Science and Mathematics. This project was focused on development and problem solving using Arduino, an electronic prototyping platform. During the analysis, it was possible to identify the actions that made it possible to develop, apply, and evaluate the project, mainly focusing on the strengths and/or weaknesses of the use of robotics. Our results suggest that scientific concepts appear while developing robotics projects and there are many possibilities related to this approach.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.