Publications

Abstract BackgroundScience teaching in the early years plays a crucial role in students' scientific education. Teachers' attitudes and perceptions about experimental science directly affect the quality of learning. Although the curriculum highlights experimental approaches, research in Portugal shows they remain underused in classrooms.PurposeThis study aimed to examine the impact of a compulsory continuous professional development (CPD) program on primary teachers' attitudes and perceptions of science teaching, specifically assessing whether participation in a municipality-wide CPD program would lead to attitudinal changes.SampleParticipants were 109 3rd- and 4th-grade primary school teachers.Design and MethodsA quantitative, quasi-experimental one-group pre-test - post-test design was adopted. Teachers completed a validated questionnaire at the beginning and end of the school year. The instrument measured domains including Perceptions of Science Teaching, Science Teaching and Emotions, Gender and Science Teaching, Resources and Support, and Teacher Preparation and Training. Data were analyzed using paired-samples t-tests (alpha = 0.05), and effect sizes (Cohen's dz) were calculated.ResultsResults showed statistically significant improvements in teachers' perceptions of science teaching, emotions, and preparation and training, with small-to-moderate effect sizes. No significant changes were observed in the Resources and Support domain, suggesting structural or institutional constraints beyond the scope of the CPD program.ConclusionThese findings highlight the potential of compulsory CPD to foster positive changes in teachers' perceptions, while underscoring contextual factors that may limit its impact. The study provides evidence to inform sustainable CPD design and identifies directions for future research, such as long-term follow-up and cross-context comparisons.

Abstract The high costs of equipment and maintenance for Chemistry laboratories are a barrier to quality education in this science. However, the emergence of user-friendly and low-cost technological tools helps to mitigate this problem. This paper presents a STEM proposal for exploring distillation collaboratively in a remote laboratory with live data transmission and sharing online. The approach was analyzed by four teachers from Mozambique who, in that context, highlighted the positive potential for knowledge exchange between schools and cultures and the negative lack of technological means in schools for its implementation. They recognize great potential for implementation in higher education, as institutions have better resources. Thus, richer learning experiences can be promoted for all participants.

Abstract (1) Background: The under-representation of women in STEM fields, particularly in areas such as physics and computing, is far from being resolved. This gender gap has complex causes. This research was carried out to understanding how physics teachers in Portugal are aware of the existence of a gender gap and how they use or are willing to use girl-friendly strategies in their lessons; (2) Methods: A sample of 55 Portuguese physics and chemistry teachers from the third cycle of basic education and secondary education and an 8-item survey were used. (3) Results: The results show that most teachers perceive girls' participation in physics as satisfactory, and that girls do not perceive a gender gap and are interested in the subject, but may not be aware of the concept and application of girl-friendly strategies. (4) Conclusions: No correlation was found between gender or years of service and interest in the topic of girl-friendly strategies. Further research with a more diverse sample is needed to generalize these findings.

Abstract <jats:p>Este artículo presenta una propuesta de secuencia didáctica dirigida a estudiantes de secundaria. Se propone la exploración de indicadores ácido-base naturales con el fin de caracterizar diferentes soluciones acuosas. Luego, los estudiantes se enfrentan a un escenario desafiante e investigativo: la adición de lejía a un refresco de cola resulta en una reacción química que también implica cambios de color. Basándose en el protocolo desarrollado, los estudiantes llevarán a cabo ensayos experimentales para determinar si el refresco de cola es un indicador ácido-base. Para explicar los resultados obtenidos, los estudiantes llevarán a cabo una investigación cuyas conclusiones llevarán a la introducción del tema de las reacciones de oxidación-reducción. Con esta propuesta se busca fomentar la participación activa de los estudiantes en la construcción de su aprendizaje a través de actividades prácticas y experimentales, utilizando materiales cotidianos para promover su autonomía y, al mismo tiempo, estimular la curiosidad científica y el desarrollo de habilidades esenciales para la educación del siglo XXI. Además, el conocimiento que este enfoque didáctico contribuye significativamente a una comprensión más profunda de los conceptos fundamentales de la Química, promoviendo reflexiones más profundas sobre su relevancia en la sociedad actual.</jats:p>

Abstract BackgroundRecent literature underscores the importance of programming in preparing students for the challenges of a technologically evolving society.PurposeThis study explores the integration of Arduino programming in a non-formal education context, considering its potential to promote interdisciplinary approaches - particularly in Physics and ICT subjects - and foster students' interest and motivation.SampleEighty Portuguese middle school students participated in the practical activity designed.Design and MethodsDuring the activity, fundamental concepts of electronics, circuits, and Arduino programming were introduced and explored. Participants completed a questionnaire regarding their interests, motivations, and experiences. The data were supplemented with field notes collected by the research team.ResultsFindings show significant student interest in exploring Arduino programming, despite facing challenges such as coding difficulties and limited familiarity with electronic components and circuits. Students expressed enthusiasm for engaging in future activities related to the topic and supported its interdisciplinary integration and they recognized its potential to improve learning outcomes and develop essential competencies and skills.ConclusionPositive indicators have emerged from this research regarding the implementation of this innovative approach, which could be transposed into a formal education context, such as Physics. This approach not only captivates students' interest but also empowers them to thrive in an ever-evolving technological landscape.

Abstract The quality of initial and continuous training for primary-school teachers is essential to fostering science education and building strong scientific foundations. This qualitative case study, conducted over two consecutive school years in Portugal, examines the impact of a continuous professional development program aimed at addressing gaps in primary teachers' experimental science teaching. The program took place in the municipality of Penafiel and was organized by a university research team in collaboration with local schools. The program combined face-to-face sessions, in-school support from expert monitors, and the provision of teaching resources. Data were drawn from Individual Final Reflective Reports written by 108 teachers, all of whom participated through mandatory enrollment in the local training initiative. The sample was therefore exhaustive, covering the entire population targeted by the municipality. The reports were analyzed using qualitative content analysis, following an inductive coding process supported by peer validation. NVivo (version 14) software was used to assist in the categorization and management of textual data. The analysis revealed that teachers highly valued the training, particularly highlighting the relevance of the content, the effectiveness of the methodologies, and the training's practical utility in overcoming classroom challenges. The program enhanced teachers' confidence in implementing experimental activities and improved their teaching practices. The study underscores the importance of continuous professional development in strengthening teacher qualifications and science education. Limitations include reliance on self-reported reflections, the focus on a single municipality, and the absence of triangulation with classroom observations. Nevertheless, the program demonstrates that combining active methodologies, contextualized classroom support, and resource provision is a promising model for teacher professional development. The implications are relevant for policymakers, training centers, and teacher educators designing continuous professional development initiatives. Future research should explore scalability, longitudinal effects, and the comparative effectiveness of different continuous professional development mode.

Abstract BackgroundContinuing professional development (CPD) for primary school teachers is crucial to address conceptual and attitudinal challenges in science education. Chemistry, in particular, is often perceived as abstract and difficult to teach, which contributes to its underrepresentation in classroom practice.PurposeThis study investigates the perceptions and choices of Portuguese primary school teachers engaged in a CPD programme, with a focus on understanding the limited emphasis placed on Chemistry compared to other scientific disciplines.SampleThe study involved 108 Portuguese primary teachers who participated in a two-year CPD programme centred on experimental approaches to science teaching.Design and MethodsData were collected through a questionnaire designed to evaluate the perceived quality of the CPD intervention, identify the scientific areas teachers considered most relevant, and explore the reasons behind their preferences for experimental activities in Biology and Physics over Chemistry.ResultsWhen asked to identify the most relevant experimental activities, only 20 teachers selected Chemistry-related ones, whereas 58 chose Biology and 30 chose Physics. Analysis of the responses indicated that organisational barriers, limited access to materials in schools (both during and after the intervention), knowledge-related difficulties, and challenges in classroom implementation contributed to Chemistry being perceived as an abstract and complex subject.ConclusionThe findings highlight the persistent barriers faced by primary school teachers in adopting Chemistry-related experimental activities, suggesting the need for CPD initiatives to provide greater support, resources, and pedagogical strategies aimed at making Chemistry more accessible and meaningful at the primary level.

Abstract In a societal context where chemistry is often perceived negatively, it is essential to promote educational approaches that foster meaningful and engaging learning experiences from an early age. This study aimed to explore how the integration of storytelling and hands-on activities can contribute to primary school children's engagement and understanding of scientific concepts, leading to a more meaningful chemistry learning. The research was conducted in four primary schools in the northern region of Portugal, involving 237 third- and fourth-grade students in non-formal educational initiatives. A qualitative methodology was employed, based on the analysis of students' laboratory notebooks. The intervention consisted of a dramatized story from the book Hist & oacute;rias com Qu & iacute;mica [Stories with Chemistry], followed by three water-based hands-on activities addressing key chemical concepts: acid-base reactions, supersaturated solutions, and redox processes. Children's responses were analysed using framework theory, which enabled the categorization of their conceptual development. The findings showed that students' responses progressed from simple sensory observations and intuitive explanations to the construction of basic scientific models. High levels of participation, engagement, and enthusiasm were observed throughout the activities. These results suggest that combining storytelling with hands-on experimentation represents a promising pedagogical strategy for introducing chemistry concepts in early education and promoting a more positive and accessible image of this science.

Abstract The rapid spread of generative artificial intelligence (GenAI) in contemporary society calls for a rethinking of education. This study investigates Portuguese secondary students' perceptions of chat generative pre-trained transformer (ChatGPT) in education. In 2024, we surveyed 114 students (aged 16-17) from one school in 2024 using a 15-item questionnaire (closed- and openended items) covering five dimensions: (1) knowledge of AI and ChatGPT; (2) use of ChatGPT; (3) perceived accuracy of ChatGPT-generated outputs; (4) the potential of ChatGPT for teaching; and (5) ethics and academic integrity. Responses to closed-ended items were analyzed descriptively and open-ended responses underwent content analysis. The results indicate that, although most students are familiar with AI and ChatGPT, their demonstrated knowledge is largely utilitarian and superficial. Students predominantly use ChatGPT for schoolwork and attribute high reliability to its outputs, often without the necessary critical evaluation. We also identified weaknesses in their ethical understanding, particularly regarding academic integrity and plagiarism. We argue for critical AI literacy and teacher professional development to support pedagogically grounded and ethical integration of GenAI. Education for the ethical and responsible use of these technologies proves essential to prepare young people for future challenges.