Teaching and Assessing the Nature of Chemistry Authors Sibel Erduran University of Oxford. United Kingdom Keywords: Nature of Chemistry, methods in chemistry, Brandon’s Matrix, Project Calibrate. Abstract In science textbooks, the scientific method is often presented as a linear and stepwise process that involves hypothesis testing and experiments. Yet history of chemistry illustrates the diversity of methods that also involve non-manipulative observations. The article discusses Brandon’s Matrix that provides a tool for highlighting the diversity of methods in chemistry. Example resources produced by Project Calibrate in England are presented to illustrate how students’ epistemological commitments, metacognition and critical thinking in chemistry can be enhanced. Author Biography Sibel Erduran, University of Oxford. United Kingdom Sibel Erduran is Professor of Science Education at University of Oxford, UK. She is the Presidentof European Science Education Research Association and Editor-in-Chief of Science & Education. Her books include Argumentation in Chemistry Education: Research, Policy and Practice (Royal Society ofChemistry) and Transforming Teacher Education through the Epistemic Core of Chemistry:Empirical Evidence and Practical Strategies (Springer). Downloads PDF (Català) Issue No. 29 (2021) Section Monografia: Filosofia de la química License The intellectual property of articles belongs to the respective authors.On submitting articles for publication to the journal Educació Química, authors accept the following terms:Authors assign to Societat Catalana de Química (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Educació Química.Authors answer to Societat Catalana de Química for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Societat Catalana de Química declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.Educació Química is not responsible for the ideas and opinions expressed by the authors of the published articles.