The use of digital and blended digital learning modes is becoming more popular in teaching practice at various levels of instruction. This article reports a case study with a strong experimental approach in which a digital learning object (DLO) was developed to assist in the pedagogical practice in higher education (in the audiovisual area). The…

The continuous advances in mass spectrometry techniques have pushed forward the frontiers of all branches of the isotope biogeochemistry field. In environmental studies, different isotope ratios as determined in different reservoirs offer the opportunity, for example, to identify pollution sources and to trace metal fluxes within the trophic web…

Assuming that textbooks give literary expression to cultural and ideological values of a nation or group, we propose the analysis of chemistry textbooks used in Brazilian universities throughout the twentieth century. We analyzed iconographic and textual aspects of 31 textbooks which had significant diffusion in the context of Brazilian…