Brent Jackson (they/he/him) is a research associate in mathematics education at WestEd. Brent is a former middle school mathematics teacher and has extensive experience in facilitating mathematics teacher professional development. Brent’s research interests include professional development designed to support teachers’ learning about issues of equity and social justice (e.g., lesson study, action research), how gender is mobilized in mathematics classrooms (and theorized in research), and how groupwork (e.g., Complex Instruction) is enacted in mathematics spaces. Brent draws on a range of qualitative methodologies to inform research designs and analysis. Brent has a PhD in Curriculum, Instruction, and Teacher Education, with an emphasis in Mathematics Education, from Michigan State University.