Actividades Experimentais de Física de Baixo Custo: Um exemplo particular na 10ª Classe do curso de Ciências Físicas e Biológicas

The research focused on experimental activities, in the form of low-cost laboratory practice, with the aim of analyzing the reality of teachers in the teaching-learning process of physics in the 10th grade of the Physical and Biological Sciences course. An experimental study was carried out at the Secondary School Liceu 26 de Abril no. 1677 in the Municipality of Lubango, Huíla Province, Republic of Angola. Questionnaires were used as research tool, allowing a quantitative approach to be reported, using the statistical method in laboratory practice. There was a 100% sample of 6 teachers who teach physics and a 25% sample of 367 students. Once the diagnosis had been made, it was found that the institution in question does not have a laboratory equipped to carry out experimental activities, either with low-cost materials or with recycled materials and, of the few laboratory practices observed, there was no example of a calculation that included analysis of the theory of error for direct or indirect measurement.