This introductory paper reviews the literature on the use of evidencebased knowledge (EBK) in the initial and continuing professional development of teachers and also in their everyday practice. It will set the scene for the theme of the SI and critically discuss general current issues about the generation of educational research evidence, how teachers may, or may not, acquire this and, drawing on and updating the outcomes of the previous JET SI (41 (5), 2014), some of the implications of translational research and knowledge mobilisation. KEYWORDS Teachers' knowledge; knowledge mobilisation; information and communications technologies
Teachers' knowledgeTeaching is an intellectual, critical profession (Duggan and la Velle 2018). The corpus of academic and professional knowledge for a teacher is vast and dynamic and engagement with research developments in an effective teacher's subject and practice is a career-long requirement and commitment. Because teachers are professionals, their education requires more than just teaching and management skills, (Zeichner 2014). They do need to master the technical dimension of teaching but their profession involves more than that. Issues such as reflection, emotions, beliefs, dispositions, agency, professional values, etc. are key in developing as a teacher along with robust knowledge. This is even more relevant at times when teaching is marked by growing tensions and paradoxes with implications for teacher education such as preparing for professional autonomy in a world of externally imposed educational policy. Additionally, the pressure to achieve immediate results and successes in external measures, such as examinations and league tables, versus the need to prepare students in an era of migration and growing multiculturalism in school contexts (Ben-Peretz and Flores 2018), is set against a backdrop of the requirement for 21 st century skills. As workers with knowledge who play a key role in promoting the social and cultural dimension of children and their families (Flores and Ferreira 2016), teachers need a set of knowledge, competencies, dispositions, attitudes, etc. including the ethical, social, cultural, political dimension of teaching and teacher education (Flores 2016).As such, a solid base of knowledge is required of a teacher whose work goes beyond the mere implementation of top-down initiatives or the transmission of externally predefined knowledge and skills. They make use of their discretionary judgment in