Incorporating technologies with Generative Artificial Intelligence (GenAI) into education requires a shift in teaching methodologies. However, little is known about how pre-service teachers perceive the relevance and challenges of this incorporation, particularly in mathematics education. This study investigates pre-service teachers’ interactions with GenAI, addressing the relevance and challenges of integrating it in mathematics teaching and discussing possible implications for their knowledge and professional development. Specifically, it intends to understand: How does the pre-service teachers’ interaction with GenAI during the design and implementation of teaching activities relate to their professional knowledge? And how does this relation impact the relevance they ascribe to GenAI? In this qualitative and interpretative study, involving seven pre-service mathematics teachers, we analyse the interplay between participants’ knowledge and use of a GenAI (in this case, ChatGPT), guided by KTMT – Knowledge for Teaching Mathematics with Technology model. The main conclusions revealed a landscape characterised by promise and challenge, where GenAI can be a valuable educational tool when used to facilitate discussion and promote critical thinking, highlighting the relevance and development of KTMT. The ability to evaluate and reflect on AI-generated responses can promote professional development, preparing pre-service teachers for an increasing presence of technology in educational environments.
From Murger’s Scenes de la vie de Bohème (1851) to Puccini’s adaptation (1896), the cold prevailing in the painters’ studio emerges as a recurrent motif in representations of the Bohemian artists’ lifestyle. Their ability to endure harsh living conditions for the sake of their art constitutes a key element in the idealization they underwent during the second half of the nineteenth century. Examining the role of temperature and its perception in the social constructions of this artistic way of life sheds light not only on the material culture of the period – particularly in relation to heating technologies – but also on the social implications of domestic comfort, studio practices, and conceptions of the artist’s life. The study of temperature and its perception highlights the porous boundary between the narratives that shaped the myth of the artistic bohème and the social realities experienced by artists in the mid-nineteenth century. It also reveals the role that this shared sensory experience may have played in the construction and idealization of this marginal group, in contrast to the bourgeois social class.
We explored the dynamics of treatment termination in a patient with borderline personality organization who underwent eight years of transference-focused psychotherapy (TFP). A previous paper examined the beginnings of this treatment (Bernardi and Eidlin 2024 ). In both papers, we aim to strengthen the clinical evidence through further contextualization and triangulation of perspectives. We analyze the relationship between the end of treatment, therapeutic gains in relation to self and other, and the likelihood that these gains will be maintained and extended once the patient is on his or her own. The contributions of complex systems models to the study of dynamic, open, and non-linear clinical interactions are explored.
Bioherbicides, including plant extracts, allelochemicals, and microbial agents, offer sustainable alternatives for weed control in agriculture. In Brazil, the native tree Esenbeckia leiocarpa (guarantã) shows potential phytotoxic effects in weeds species. This study evaluates aqueous extracts from its aerial parts as a substitute for herbicides, focusing on their impact on weed germination and initial growth. The experiment used a completely randomized 7 × 4 factorial design with seven extract concentrations (0, 5, 10, 20, 40, 80, and 100%) and four weed species ( Amaranthus hybridus , Bidens pilosa , Euphorbia heterophylla , and Digitaria insularis ), with four replicates per treatment. Germination and germination speed index dropped significantly even at 5%, nearly ceasing at 20% or higher. The results indicate a non-linear dose-response relationship, suggesting that increasing the extract concentration beyond 20% does not result in a proportional reduction in germination. Pre-germinated seeds showed reduced radicle length and fresh mass from 5%, with E. heterophylla least affected and D. insularis most sensitive. Phytotoxic effects increased with concentration, except for D. insularis , where phytotoxicity stabilized (90% phytotoxicity) at concentrations above 20%. When applied to leaves, phytotoxicity was minimal, ranging from 5 to 10%, and had negligible effect on reducing fresh mass. The findings indicate that the response to E. leiocarpa leaf extract varies among the weed species evaluated, primarily affecting germination with minimal impact when applied to leaves. Thus, E. leiocarpa demonstrates potential as a bioherbicide for pre-emergent applications against the species studied.