This chapter presents event diagrams as a representational tool that allows students to visualize relativistic phenomena. It puts particular emphasis on thought experiments that can help students obtain a deeper understanding of physical phenomena that are hard to imagine. The chapter is intended for readers who look for instructional models to teach concepts of special relativity at the secondary school level, and also, for those who wish to learn more about thought experiments as instructional tools. Students perform the thought experiment by drawing light propagation in the event diagram. Compared to the traditional presentation of thought experiments, the event diagram stimulates students to reason with light propagation more explicitly. Like all external representations, event diagrams are a simplified and idealized display of reality and are inherently limited. To wrap up, the authors have shown how their tasks stimulate students to perform thought experiments by drawing light propagation in event diagrams.
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Changes, challenges and expectations of society call for ongoing professional development of teachers. However, in many schools ongoing professional development cannot be taken for granted. Many governmental, local or institutional policies aim at stimulating teachers’ professional development, but many of these policies have a limited impact. To reach a deeper understanding of this problem casual loop diagrams (Salmon et al, 2022) can be helpful as they visualize how different parts and processes in an organisation are interrelated and either strengthen of weaken one another. Causal loop diagrams originate from the field of system thinking where they are used to understand wicked problems in complex systems (Bore & Wright, 2009; Groff, 2013; Vermaak, 2016). Causal loop diagrams can illustrate how elements like the structure of the profession and of schools, cultures in schools, collegial dynamics, etc are interconnected and can reinforce each other in a positive or negative way. From our observations in schools and from many discussions with teachers and school leaders we developed causal loop diagrams and validated these in literature. Our next step will be to validate the causal loop diagrams in practices in schools through focus group interviews in a variety of schools. In this session we will present some of the causal loop diagrams we developed, the patterns they illustrate and the underlying theory that support these patterns. Additionally, we will discuss to what extend these patterns are unique for the Dutch context in which we developed them, and the extent in which they can also be recognized in other counties and contexts. Finally we will discuss the way in which working with causal loop diagrams can support teachers, schools and teacher educators that collaborate with schools to identify patterns that hinder a systemic approach for ongoing professional development.
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Thinking back and forth between observing physical phenomena and developing scientific ideas, also known as hands-on and minds-on learning, is essential for the development of scientific reasoning in primary science education. In the Netherlands, inquiry-based learning is advocated as the preferred teaching method. However, most teachers lack time and sufficient pedagogical content knowledge to adequately provide the teaching required for this. To address this problem, we designed and evaluated science and technology lessons, consisting of hands-on experiments combined with interactive diagrams, aimed at scaffolding primary school students (9–12 years) in the development of their scientific reasoning. Our proof-of-concept uses an online application, that lets students work through the lessons while alternating hands-on and minds-on activities. A study was carried out (n = 490) showing that most students successfully complete the lessons within a standard lesson timeframe. The approach enables students to effectively apply several types of scientific reasoning and to do so more autonomously than in traditional science classes.
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