The main objective of this paper is to describe the process of integration of the disciplines of arts and sciences through poems written by pupils of a public school in southern Brazil. First, the teachers wrote and read a poem in classroom for pupils of the fifth to eighth grade. After, pupils wrote a poem about science subjects, aiming to improve the learning of concepts of physics, chemistry, and biology inspired by their own poetic vision on science and nature. The results address the work to improve the utilization of poetry in learning science, contributing to the development of an interdisciplinary method integrating different sources of knowledge and, mainly, students, teachers, and learning.

With increasing demand for sustainable materials, keratin wastes have been regarded, in recent years, as renewable resources worthy of exploitation. Each year, the Portuguese leather industry discards a considerable amount of animal hair, which constitutes a troublesome waste product. In this study, in an attempt to find a potential utilization for this waste, the preparation of biodegradable films from bovine hair, by thermo-compression, was tested. Bovine hair formulations with 20, 30 and 40 wt % of plasticizer (glycerol, lactic acid) were pressed into films, at 147 kN and 120ºC or 160ºC for 4 minutes. The mechanical properties, colour, solubility and water sorption isotherms of the obtained films were assayed. All films were opaque and dark. Solubility was higher for films processed at higher temperature and with lactic acid as plasticizer. The Guggenheim-Anderson-de Boer (GAB) model gave a good fit to the experimental results for the moisture sorption isotherms. The stress at break, , and the Young's modulus, E, decreased and the strain at break, , increased with the addition of increasing amounts of plasticizer.

This work presents some results that we obtained during the third edition of the extension project “Urban and Periurban Agriculture: Food, Education and Health” of the Federal University of Rio Grande do Sul, under the general coordination of Professor Rejane Schaefer Kalsing and assistant coordination of Professor Ricardo Dagnino. Since 2019, the extension project has been developing many "fruits" with the interaction of various actors and social agents involved, especially the most vulnerable populations on the North Coast of Rio Grande do Sul. In parallel with the development of the project and as a component of it, experience reports are being published at scientific events, seeking to provide the community with a certain level of access to some results of the work carried out (KALSING et al, 2019; DAGNINO, 2021). In addition, the community has also witnessed its reflexes of engagement in the communities themselves, through the stimulation and technical preparation of students, especially extension scholarship holders linked to the project, who become agents actively collaborating in the construction and dissemination of community gardens, with agroecological and/or agroforestry production.