Potash, an essential raw material of the 18th century, used to be produced from the ashes of plants. Known since antiquity, it was in 1807 that Humphry Davy put an end to the decades-long controversy about its nature as a compound. The technology behind potash production was implemented in Brazil by the Portuguese naturalist Frei Velloso. The…

The construction of a concept can be developed from the students' prior knowledge. Regarding deaf students, it is considered their conceptions conceived through vision. Given this, the present research was conducted with a group of deaf students in the 7th year of elementary school with the aim of verifying what ideas these students had about…

Educational kits can improve the teaching of experimental sciences, providing an interesting strategy to be explored at home, especially during the COVID-19 pandemic. In this sense, chemistry kits based on a microscale design were developed encompassing safety, portability, efficacy, and low cost. They were successfully applied in regular classes…

Science education objectives in Brazil have evolved over time. Initially, the focus was on creating scientifically literate citizens who could relate scientific concepts to their daily lives. In 2017, the São Paulo City Curriculum for Natural Sciences was introduced to teach students scientific literacy through inquiry-based teaching methods. This…

There has been an increase in the number of studies about educational scenarios aimed at promoting argumentation. Special attention is given to scenarios involving case studies. In this article, we report on the application of an interrupted case study to develop argumentation skills supported by information and communication technologies. The…

National governments are concerned about the disconnection of young people from science, which hampers the development of a scientifically literate society promoting sustainable development, wellbeing, equity, and a green economy. Introduced in 2015 alongside Agenda 2030, the "open schooling" approach aims at enhancing students' science…

Proteins are essential for cell function, and their biological performance depends on three-dimensional (3D) structures. Insulin is made up of 51 amino acids and is a critical hormone involved in glycaemia regulation. In basic education, concepts involving proteins (synthesis, structure, interactions, and function) are abstract and difficult for…

We develop the notions of "resistance" and "points of entry" in the context of alternative written textual formats used in physics teacher education. Studies point out that textbooks have played an important role in undergraduate physics courses, which can be part of the initial training of physics teachers. On the foundation…

The link between science education and early childhood education is still blurred. This is so because many science education researchers apparently, but mistakenly, believe that the way young children interrogate and investigate the world around them is not appropriate for their understanding of scientific concepts. Although there is an effort…

Antioxidants are molecules that act against free radicals, and this effect can bring many benefits to health and society. Antioxidants can be found in various matrices of nature, such as fruits and plants. Some studies have shown that "Rhizophora mangle," a typical mangrove plant, is rich in antioxidants. People report its use for…

The mining industry in Brazil, despite contributing to economic growth, is one of the human activities that negatively impacts the environment. This situation can be contextualized in discussions of several curricular chemistry topics. One way in which science, technology, society, and environmental issues can be discussed in classes is through…

Background: Science teaching and learning, as discursive practices, occur through the utilization of various semiotic modes. Gestures play a pivotal role as an embodied mode that acts in conjunction with speech in oral communication settings, such as classrooms. Previous research on gestures in chemistry and science education has illuminated how…

The Griess assay is widely used by regulation agencies as an official method for nitrite quantification in water and food samples. In Brazil, the official method, which has been used to determine nitrite in food, was described by Instituto Adolfo Lutz (283/IV) in 1984. It uses 8 mL of reactants and provides 50 mL (reactants plus sample) of waste…

Science educators are increasingly using a historical approach to pedagogy as a way to enable students to understand the process of the construction of science in a more contextualized manner. Considering the meaning of context in a broader sense, this article has two objectives. First, it aims to explore how physics lessons using a Cultural…

This study evaluated how the process of teaching scientific methodology occurs in technical courses in integrated high schools. The qualitative case study was conducted through documentary analysis (based on regulations and pedagogical projects) and semi-structured interviews with teachers (n=7), coordinators (n=3), and students (n=16) of the…